Skip uploads of existing documents and support checksum preflight in importer

.gitea/workflows/release.yaml

@@ -0,0 +1,53 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - main
+      - staging
+  tags:
+    - '*'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - service: frontend
+            context: frontend
+            dockerfile: frontend/Dockerfile
+          - service: backend
+            context: backend
+            dockerfile: backend/Dockerfile
+
+    steps:
+      - name: Checkout with submodules
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Login to Docker Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ vars.REGISTRY_URL }}
+          username: ${{ vars.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          driver: remote
+          endpoint: ${{ env.BUILDKIT_ARM64_ENDPOINT }}
+
+      - name: Build and Push ${{ matrix.service }} Image
+        uses: docker/build-push-action@v6
+        with:
+          context: ${{ matrix.context }}
+          file: ${{ matrix.dockerfile }}
+          platforms: linux/arm64
+          push: true
+          provenance: false
+          tags: |
+            ${{ vars.REGISTRY_URL }}/${{ gitea.repository }}-${{ matrix.service }}:${{ gitea.ref_type == 'tag' && gitea.ref_name || (gitea.ref_name == 'main' && 'latest' || gitea.ref_name) }}
+            ${{ vars.REGISTRY_URL }}/${{ gitea.repository }}-${{ matrix.service }}:${{ gitea.sha }}

.gitignore

@@ -6,6 +6,7 @@
 /backend/.env
 /backend/.env.*
 /backend/.cargo/
+backend/libpdfium.*
 
 # Node/Frontend
 /frontend/node_modules/

LICENSE

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
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+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

README.md

@@ -1,12 +1,25 @@
-# Paperless-NEO
+# Papercrate
+
+## Local Development
+
+Use the provided `papercrate.tmux` to spin up the full stack in one tmux session:
+
+```bash
+tmux -f papercrate.tmux attach
+```
+
+This creates windows for the compose stack, frontend dev server, backend API, and background worker using the repository-relative paths defined in the tmux file. Detach with `Ctrl+b d` and reattach later with the same command.
 
 ## Backend Integration Tests
 
-Integration tests require a running Postgres instance. The repository includes a lightweight compose file for local runs:
+Integration tests require a running Postgres instance (and, optionally, Quickwit for OCR indexing). The repository includes a lightweight compose file for local runs:
 
 ```bash
 docker compose -f docker-compose.test.yml up -d
-export TEST_DATABASE_URL=postgres://paperless:paperless_test@localhost:5433/paperless_test
+export TEST_DATABASE_URL=postgres://papercrate:papercrate_test@localhost:5433/papercrate_test
+# optional, enables Quickwit indexing jobs
+export QUICKWIT_ENDPOINT=http://localhost:7280
+export QUICKWIT_INDEX=documents
 cargo test
 ```
 
@@ -17,3 +30,44 @@ docker compose -f docker-compose.test.yml down
 ```
 
 The compose service uses tmpfs storage, giving each test run a clean database.
+
+## Runtime Dependencies
+
+- `ocrmypdf` (optional but recommended): Used by the OCR worker to extract text from PDFs when no embedded text layer is available. Ensure it is installed and available on the worker hosts if OCR is desired.
+- Quickwit (optional): The Quickwit indexer is used to ingest extracted text for search. Set `QUICKWIT_ENDPOINT` and `QUICKWIT_INDEX` in the environment when running workers if you want indexing jobs to run. The local compose file starts a Quickwit instance on `http://localhost:7280` and seeds the `documents` index automatically.
+
+## Configuration
+
+The backend reads its settings from environment variables (see `backend/.env` for local defaults). In particular:
+
+- `DATABASE_URL` – connection string for the primary Postgres database (required).
+- `DATABASE_MAX_POOL_SIZE` – optional override for the r2d2 connection pool size. Defaults to `2`; increase it in staging/production to match expected concurrency.
+
+On startup each binary logs the effective configuration with secrets redacted (for example, the database password is masked). This makes it easier to confirm the runtime settings in staging without exposing credentials.
+
+## Running Migrations in Kubernetes
+
+The backend container image ships the `diesel` CLI, so schema migrations can be executed as a short-lived Job (or Helm hook) before rolling out new pods. Example manifest:
+
+```yaml
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: papercrate-migrate
+spec:
+  template:
+    spec:
+      restartPolicy: OnFailure
+      containers:
+        - name: migrate
+          image: ghcr.io/example/papercrate-backend:<TAG>
+          command: ["/usr/local/bin/diesel", "migration", "run"]
+          env:
+            - name: DATABASE_URL
+              valueFrom:
+                secretKeyRef:
+                  name: papercrate-db
+                  key: DATABASE_URL
+```
+
+Run the Job manually (`kubectl apply -f migrate-job.yaml`) or configure it as a Helm pre-install/pre-upgrade hook so migrations run automatically on each deployment. Once the Job succeeds, deploy/update the backend `Deployment` as usual.

backend/Cargo.lock

@@ -67,7 +67,7 @@ checksum = "9035ad2d096bed7955a320ee7e2230574d28fd3c3a0f186cbea1ff3c7eed5dbb"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -593,6 +593,52 @@ dependencies = [
  "tower-service",
 ]
 
+[[package]]
+name = "backend"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "argon2",
+ "async-trait",
+ "aws-config",
+ "aws-credential-types",
+ "aws-sdk-s3",
+ "axum",
+ "axum-extra",
+ "base64 0.21.7",
+ "bytes",
+ "chrono",
+ "diesel",
+ "diesel_migrations",
+ "dotenv",
+ "futures-util",
+ "hex",
+ "http-body-util",
+ "hyper 1.7.0",
+ "image",
+ "jsonwebtoken",
+ "mime_guess",
+ "once_cell",
+ "pdfium-render",
+ "percent-encoding",
+ "quick-xml",
+ "rand 0.8.5",
+ "reqwest",
+ "serde",
+ "serde_json",
+ "sha2",
+ "tempfile",
+ "thiserror 1.0.69",
+ "tokio",
+ "tower 0.4.13",
+ "tower-http",
+ "tracing",
+ "tracing-subscriber",
+ "url",
+ "utoipa",
+ "uuid",
+]
+
 [[package]]
 name = "backtrace"
 version = "0.3.76"
@@ -659,7 +705,7 @@ dependencies = [
  "regex",
  "rustc-hash",
  "shlex",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -753,6 +799,12 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2fd1289c04a9ea8cb22300a459a72a385d7c73d3259e2ed7dcb2af674838cfa9"
 
+[[package]]
+name = "cfg_aliases"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
+
 [[package]]
 name = "chrono"
 version = "0.4.42"
@@ -938,7 +990,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -949,7 +1001,7 @@ checksum = "d38308df82d1080de0afee5d069fa14b0326a88c14f15c5ccda35b4a6c414c81"
 dependencies = [
  "darling_core",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -999,7 +1051,7 @@ dependencies = [
  "dsl_auto_type",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -1019,7 +1071,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fe2444076b48641147115697648dc743c2c00b61adade0f01ce67133c7babe8c"
 dependencies = [
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -1041,7 +1093,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -1067,7 +1119,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -1129,6 +1181,16 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
+[[package]]
+name = "errno"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
+dependencies = [
+ "libc",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "fastrand"
 version = "2.3.0"
@@ -1212,6 +1274,23 @@ version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "05f29059c0c2090612e8d742178b0580d2dc940c837851ad723096f87af6663e"
 
+[[package]]
+name = "futures-io"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e5c1b78ca4aae1ac06c48a526a655760685149f0d465d21f37abfe57ce075c6"
+
+[[package]]
+name = "futures-macro"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.106",
+]
+
 [[package]]
 name = "futures-sink"
 version = "0.3.31"
@@ -1231,9 +1310,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9fa08315bb612088cc391249efdc3bc77536f16c91f6cf495e6fbe85b20a4a81"
 dependencies = [
  "futures-core",
+ "futures-io",
+ "futures-macro",
+ "futures-sink",
  "futures-task",
+ "memchr",
  "pin-project-lite",
  "pin-utils",
+ "slab",
 ]
 
 [[package]]
@@ -1266,9 +1350,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26145e563e54f2cadc477553f1ec5ee650b00862f0a58bcd12cbdc5f0ea2d2f4"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "r-efi",
  "wasi 0.14.7+wasi-0.2.4",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -1540,6 +1626,7 @@ dependencies = [
  "tokio",
  "tokio-rustls 0.26.4",
  "tower-service",
+ "webpki-roots",
 ]
 
 [[package]]
@@ -1726,6 +1813,8 @@ checksum = "4b0f83760fb341a774ed326568e19f5a863af4a952def8c39f9ab92fd95b88e5"
 dependencies = [
  "equivalent",
  "hashbrown 0.16.0",
+ "serde",
+ "serde_core",
 ]
 
 [[package]]
@@ -1745,6 +1834,16 @@ version = "2.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "469fb0b9cefa57e3ef31275ee7cacb78f2fdca44e4765491884a2b119d4eb130"
 
+[[package]]
+name = "iri-string"
+version = "0.7.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbc5ebe9c3a1a7a5127f920a418f7585e9e758e911d0466ed004f393b0e380b2"
+dependencies = [
+ "memchr",
+ "serde",
+]
+
 [[package]]
 name = "itertools"
 version = "0.13.0"
@@ -1817,6 +1916,12 @@ dependencies = [
  "windows-targets 0.53.5",
 ]
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df1d3c3b53da64cf5760482273a98e575c651a67eec7f77df96b5b642de8f039"
+
 [[package]]
 name = "litemap"
 version = "0.8.0"
@@ -1847,6 +1952,12 @@ dependencies = [
  "hashbrown 0.15.5",
 ]
 
+[[package]]
+name = "lru-slab"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "112b39cec0b298b6c1999fee3e31427f74f676e4cb9879ed1a121b43661a4154"
+
 [[package]]
 name = "matchers"
 version = "0.2.0"
@@ -2066,44 +2177,6 @@ dependencies = [
  "sha2",
 ]
 
-[[package]]
-name = "paperless-backend"
-version = "0.1.0"
-dependencies = [
- "anyhow",
- "argon2",
- "async-trait",
- "aws-config",
- "aws-credential-types",
- "aws-sdk-s3",
- "axum",
- "axum-extra",
- "bytes",
- "chrono",
- "diesel",
- "diesel_migrations",
- "dotenv",
- "hex",
- "http-body-util",
- "hyper 1.7.0",
- "image",
- "jsonwebtoken",
- "mime_guess",
- "once_cell",
- "pdfium-render",
- "rand 0.8.5",
- "serde",
- "serde_json",
- "sha2",
- "thiserror 1.0.69",
- "tokio",
- "tower 0.4.13",
- "tower-http",
- "tracing",
- "tracing-subscriber",
- "uuid",
-]
-
 [[package]]
 name = "parking_lot"
 version = "0.12.5"
@@ -2197,7 +2270,7 @@ checksum = "6e918e4ff8c4549eb882f14b3a4bc8c8bc93de829416eacf579f1207a8fbf861"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -2289,7 +2362,31 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
 dependencies = [
  "proc-macro2",
- "syn",
+ "syn 2.0.106",
+]
+
+[[package]]
+name = "proc-macro-error"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
+dependencies = [
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+ "version_check",
+]
+
+[[package]]
+name = "proc-macro-error-attr"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "version_check",
 ]
 
 [[package]]
@@ -2310,6 +2407,70 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "quick-xml"
+version = "0.32.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d3a6e5838b60e0e8fa7a43f22ade549a37d61f8bdbe636d0d7816191de969c2"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "quinn"
+version = "0.11.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9e20a958963c291dc322d98411f541009df2ced7b5a4f2bd52337638cfccf20"
+dependencies = [
+ "bytes",
+ "cfg_aliases",
+ "pin-project-lite",
+ "quinn-proto",
+ "quinn-udp",
+ "rustc-hash",
+ "rustls 0.23.32",
+ "socket2 0.6.0",
+ "thiserror 2.0.17",
+ "tokio",
+ "tracing",
+ "web-time",
+]
+
+[[package]]
+name = "quinn-proto"
+version = "0.11.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1906b49b0c3bc04b5fe5d86a77925ae6524a19b816ae38ce1e426255f1d8a31"
+dependencies = [
+ "bytes",
+ "getrandom 0.3.3",
+ "lru-slab",
+ "rand 0.9.2",
+ "ring",
+ "rustc-hash",
+ "rustls 0.23.32",
+ "rustls-pki-types",
+ "slab",
+ "thiserror 2.0.17",
+ "tinyvec",
+ "tracing",
+ "web-time",
+]
+
+[[package]]
+name = "quinn-udp"
+version = "0.5.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "addec6a0dcad8a8d96a771f815f0eaf55f9d1805756410b39f5fa81332574cbd"
+dependencies = [
+ "cfg_aliases",
+ "libc",
+ "once_cell",
+ "socket2 0.6.0",
+ "tracing",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.41"
@@ -2439,6 +2600,47 @@ version = "0.8.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "caf4aa5b0f434c91fe5c7f1ecb6a5ece2130b02ad2a590589dda5146df959001"
 
+[[package]]
+name = "reqwest"
+version = "0.12.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d429f34c8092b2d42c7c93cec323bb4adeb7c67698f70839adec842ec10c7ceb"
+dependencies = [
+ "base64 0.22.1",
+ "bytes",
+ "futures-core",
+ "futures-util",
+ "http 1.3.1",
+ "http-body 1.0.1",
+ "http-body-util",
+ "hyper 1.7.0",
+ "hyper-rustls 0.27.7",
+ "hyper-util",
+ "js-sys",
+ "log",
+ "percent-encoding",
+ "pin-project-lite",
+ "quinn",
+ "rustls 0.23.32",
+ "rustls-pki-types",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "sync_wrapper",
+ "tokio",
+ "tokio-rustls 0.26.4",
+ "tokio-util",
+ "tower 0.5.2",
+ "tower-http",
+ "tower-service",
+ "url",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-streams",
+ "web-sys",
+ "webpki-roots",
+]
+
 [[package]]
 name = "rfc6979"
 version = "0.3.1"
@@ -2485,6 +2687,19 @@ dependencies = [
  "semver",
 ]
 
+[[package]]
+name = "rustix"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd15f8a2c5551a84d56efdc1cd049089e409ac19a3072d5037a17fd70719ff3e"
+dependencies = [
+ "bitflags",
+ "errno",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "rustls"
 version = "0.21.12"
@@ -2505,6 +2720,7 @@ checksum = "cd3c25631629d034ce7cd9940adc9d45762d46de2b0f57193c4443b92c6d4d40"
 dependencies = [
  "aws-lc-rs",
  "once_cell",
+ "ring",
  "rustls-pki-types",
  "rustls-webpki 0.103.7",
  "subtle",
@@ -2550,6 +2766,7 @@ version = "1.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "229a4a4c221013e7e1f1a043678c5cc39fe5171437c88fb47151a21e6f5b5c79"
 dependencies = [
+ "web-time",
  "zeroize",
 ]
 
@@ -2704,7 +2921,7 @@ checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -2892,6 +3109,16 @@ version = "2.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
 
+[[package]]
+name = "syn"
+version = "1.0.109"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
+dependencies = [
+ "proc-macro2",
+ "unicode-ident",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.106"
@@ -2908,6 +3135,9 @@ name = "sync_wrapper"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0bf256ce5efdfa370213c1dabab5935a12e49f2c58d15e9eac2870d3b4f27263"
+dependencies = [
+ "futures-core",
+]
 
 [[package]]
 name = "synstructure"
@@ -2917,7 +3147,20 @@ checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
+]
+
+[[package]]
+name = "tempfile"
+version = "3.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d31c77bdf42a745371d260a26ca7163f1e0924b64afa0b688e61b5a9fa02f16"
+dependencies = [
+ "fastrand",
+ "getrandom 0.3.3",
+ "once_cell",
+ "rustix",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -2946,7 +3189,7 @@ checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -2957,7 +3200,7 @@ checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -3010,6 +3253,21 @@ dependencies = [
  "zerovec",
 ]
 
+[[package]]
+name = "tinyvec"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfa5fdc3bce6191a1dbc8c02d5c8bffcf557bafa17c124c5264a458f1b0613fa"
+dependencies = [
+ "tinyvec_macros",
+]
+
+[[package]]
+name = "tinyvec_macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
+
 [[package]]
 name = "tokio"
 version = "1.47.1"
@@ -3038,7 +3296,7 @@ checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -3139,16 +3397,18 @@ dependencies = [
 
 [[package]]
 name = "tower-http"
-version = "0.5.2"
+version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e9cd434a998747dd2c4276bc96ee2e0c7a2eadf3cae88e52be55a05fa9053f5"
+checksum = "adc82fd73de2a9722ac5da747f12383d2bfdb93591ee6c58486e0097890f05f2"
 dependencies = [
  "bitflags",
  "bytes",
+ "futures-util",
  "http 1.3.1",
  "http-body 1.0.1",
- "http-body-util",
+ "iri-string",
  "pin-project-lite",
+ "tower 0.5.2",
  "tower-layer",
  "tower-service",
  "tracing",
@@ -3186,7 +3446,7 @@ checksum = "81383ab64e72a7a8b8e13130c49e3dab29def6d0c7d76a03087b3cf71c5c6903"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -3291,6 +3551,31 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "utoipa"
+version = "4.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c5afb1a60e207dca502682537fefcfd9921e71d0b83e9576060f09abc6efab23"
+dependencies = [
+ "indexmap",
+ "serde",
+ "serde_json",
+ "utoipa-gen",
+]
+
+[[package]]
+name = "utoipa-gen"
+version = "4.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20c24e8ab68ff9ee746aad22d39b5535601e6416d1b0feeabf78be986a5c4392"
+dependencies = [
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.106",
+ "uuid",
+]
+
 [[package]]
 name = "uuid"
 version = "1.18.1"
@@ -3392,7 +3677,7 @@ dependencies = [
  "log",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
  "wasm-bindgen-shared",
 ]
 
@@ -3427,7 +3712,7 @@ checksum = "9f07d2f20d4da7b26400c9f4a0511e6e0345b040694e8a75bd41d578fa4421d7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -3441,6 +3726,19 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "wasm-streams"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15053d8d85c7eccdbefef60f06769760a563c7f0a9d6902a13d35c7800b0ad65"
+dependencies = [
+ "futures-util",
+ "js-sys",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
 [[package]]
 name = "web-sys"
 version = "0.3.81"
@@ -3451,6 +3749,25 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "web-time"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a6580f308b1fad9207618087a65c04e7a10bc77e02c8e84e9b00dd4b12fa0bb"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32b130c0d2d49f8b6889abc456e795e82525204f27c42cf767cf0d7734e089b8"
+dependencies = [
+ "rustls-pki-types",
+]
+
 [[package]]
 name = "windows-core"
 version = "0.62.2"
@@ -3472,7 +3789,7 @@ checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -3483,7 +3800,7 @@ checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -3710,7 +4027,7 @@ checksum = "38da3c9736e16c5d3c8c597a9aaa5d1fa565d0532ae05e27c24aa62fb32c0ab6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
  "synstructure",
 ]
 
@@ -3731,7 +4048,7 @@ checksum = "88d2b8d9c68ad2b9e4340d7832716a4d21a22a1154777ad56ea55c51a9cf3831"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]
@@ -3751,7 +4068,7 @@ checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
  "synstructure",
 ]
 
@@ -3791,7 +4108,7 @@ checksum = "5b96237efa0c878c64bd89c436f661be4e46b2f3eff1ebb976f7ef2321d2f58f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.106",
 ]
 
 [[package]]

backend/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "paperless-backend"
+name = "backend"
 version = "0.1.0"
 edition = "2021"
 
@@ -8,7 +8,7 @@ edition = "2021"
 axum = { version = "0.7", features = ["multipart"] }
 tokio = { version = "1", features = ["full"] }
 tower = { version = "0.4", features = ["make", "util"] }
-tower-http = { version = "0.5", features = ["cors", "trace"] }
+tower-http = { version = "0.6", features = ["cors", "trace"] }
 axum-extra = { version = "0.9", features = ["typed-header"] }
 
 # Database
@@ -37,6 +37,15 @@ async-trait = "0.1"
 image = { version = "0.25", default-features = false, features = ["png", "jpeg"] }
 pdfium-render = "0.8"
 mime_guess = "2.0"
+tempfile = "3.10"
+reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls", "stream"] }
+percent-encoding = "2.3"
+base64 = "0.21"
+quick-xml = "0.32"
+futures-util = "0.3"
+url = "2.5"
+once_cell = "1.19"
+utoipa = { version = "4.2", default-features = false, features = ["chrono", "uuid", "preserve_order"] }
 
 # Error handling
 thiserror = "1.0"

backend/Dockerfile

@@ -0,0 +1,65 @@
+# syntax=docker/dockerfile:1
+
+FROM rust:1-slim AS builder
+WORKDIR /app
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        build-essential \
+        pkg-config \
+        libssl-dev \
+        libpq-dev \
+        libjpeg-dev \
+        libpng-dev \
+        curl \
+    && rm -rf /var/lib/apt/lists/*
+
+COPY Cargo.toml Cargo.lock ./
+COPY src ./src
+COPY migrations ./migrations
+COPY tests ./tests
+COPY diesel.toml ./
+
+RUN cargo build --release --bin backend --bin worker --bin webdav --bin admin
+RUN cargo install diesel_cli --no-default-features --features postgres
+
+FROM debian:trixie-slim AS runtime
+WORKDIR /app
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        ca-certificates \
+        curl \
+        libssl3 \
+        libpq5 \
+        libjpeg62-turbo \
+        libpng16-16 \
+        ocrmypdf \
+        tesseract-ocr \
+        ghostscript \
+        qpdf \
+    && rm -rf /var/lib/apt/lists/* \
+    && mkdir -p /usr/local/lib \
+    && curl -fsSL https://github.com/bblanchon/pdfium-binaries/releases/latest/download/pdfium-linux-arm64.tgz -o /tmp/pdfium.tgz \
+    && mkdir -p /tmp/pdfium \
+    && tar -xzf /tmp/pdfium.tgz -C /tmp/pdfium --strip-components=1 \
+    && pdfium_so="$(find /tmp/pdfium -name libpdfium.so -type f | head -n1)" \
+    && [ -n "${pdfium_so}" ] \
+    && mv "${pdfium_so}" /usr/local/lib/libpdfium.so \
+    && ldconfig \
+    && rm -rf /tmp/pdfium.tgz /tmp/pdfium \
+    && useradd --system --create-home --uid 10001 appuser
+
+COPY --from=builder /app/target/release/backend /usr/local/bin/papercrate-backend
+COPY --from=builder /app/target/release/worker /usr/local/bin/papercrate-worker
+COPY --from=builder /app/target/release/webdav /usr/local/bin/papercrate-webdav
+COPY --from=builder /app/target/release/admin /usr/local/bin/papercrate-admin
+COPY --from=builder /usr/local/cargo/bin/diesel /usr/local/bin/diesel
+COPY migrations ./migrations
+COPY diesel.toml ./
+
+ENV RUST_LOG=info
+USER appuser
+EXPOSE 3000
+
+ENTRYPOINT ["/usr/local/bin/papercrate-backend"]

backend/examples/hash_password.rs

@@ -1,19 +0,0 @@
-use argon2::{
-    password_hash::{PasswordHasher, SaltString},
-    Argon2,
-};
-use rand::thread_rng;
-use std::env;
-
-fn main() {
-    let password = env::args()
-        .nth(1)
-        .expect("Usage: cargo run --example hash_password <password>");
-    let salt = SaltString::generate(&mut thread_rng());
-    let argon2 = Argon2::default();
-    let hash = argon2
-        .hash_password(password.as_bytes(), &salt)
-        .expect("hashing failed")
-        .to_string();
-    println!("{}", hash);
-}

backend/migrations/202402240001_create_initial_schema/down.sql

@@ -1,11 +0,0 @@
-DROP INDEX IF EXISTS idx_document_tags_tag;
-DROP TABLE IF EXISTS document_tags;
-DROP INDEX IF EXISTS idx_document_versions_document;
-DROP TABLE IF EXISTS document_versions;
-DROP INDEX IF EXISTS idx_documents_deleted_at;
-DROP INDEX IF EXISTS idx_documents_folder;
-DROP TABLE IF EXISTS documents;
-DROP INDEX IF EXISTS idx_folders_parent;
-DROP TABLE IF EXISTS folders;
-DROP TABLE IF EXISTS tags;
-DROP TABLE IF EXISTS users;

backend/migrations/202402240001_create_initial_schema/up.sql

@@ -1,77 +0,0 @@
-CREATE EXTENSION IF NOT EXISTS "pgcrypto";
-
-CREATE TABLE users (
-    id UUID PRIMARY KEY,
-    username VARCHAR(100) NOT NULL UNIQUE,
-    password_hash VARCHAR(255) NOT NULL,
-    role VARCHAR(16) NOT NULL,
-    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
-);
-
-CREATE TABLE folders (
-    id UUID PRIMARY KEY,
-    name VARCHAR(255) NOT NULL,
-    parent_id UUID REFERENCES folders(id) ON DELETE SET NULL,
-    path_cache VARCHAR(1000),
-    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    CONSTRAINT folders_parent_name_unique UNIQUE (parent_id, name)
-);
-
-CREATE INDEX idx_folders_parent ON folders(parent_id);
-
-CREATE TABLE documents (
-    id UUID PRIMARY KEY,
-    filename VARCHAR(255) NOT NULL,
-    original_name VARCHAR(255) NOT NULL,
-    content_type VARCHAR(100),
-    folder_id UUID REFERENCES folders(id) ON DELETE SET NULL,
-    current_version INTEGER NOT NULL,
-    uploaded_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    deleted_at TIMESTAMPTZ,
-    metadata JSONB NOT NULL DEFAULT '{}'::jsonb
-);
-
-CREATE INDEX idx_documents_folder ON documents(folder_id);
-CREATE INDEX idx_documents_deleted_at ON documents(deleted_at);
-
-CREATE TABLE document_versions (
-    id UUID PRIMARY KEY,
-    document_id UUID NOT NULL REFERENCES documents(id) ON DELETE CASCADE,
-    version_number INTEGER NOT NULL,
-    s3_key VARCHAR(500) NOT NULL,
-    size_bytes BIGINT NOT NULL,
-    checksum VARCHAR(64) NOT NULL,
-    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    operations_summary JSONB NOT NULL DEFAULT '{}'::jsonb,
-    CONSTRAINT document_versions_unique_version UNIQUE (document_id, version_number)
-);
-
-CREATE INDEX idx_document_versions_document ON document_versions(document_id);
-
-CREATE TABLE tags (
-    id UUID PRIMARY KEY,
-    label VARCHAR(100) NOT NULL UNIQUE,
-    color VARCHAR(7),
-    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
-);
-
-CREATE TABLE document_tags (
-    document_id UUID NOT NULL REFERENCES documents(id) ON DELETE CASCADE,
-    tag_id UUID NOT NULL REFERENCES tags(id) ON DELETE CASCADE,
-    assigned_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    assigned_by UUID REFERENCES users(id),
-    PRIMARY KEY (document_id, tag_id)
-);
-
-CREATE INDEX idx_document_tags_tag ON document_tags(tag_id);
-
-INSERT INTO users (id, username, password_hash, role)
-VALUES (
-    gen_random_uuid(),
-    'admin',
-    '$argon2id$v=19$m=19456,t=2,p=1$UMkfsNut028fmZupy9JoQg$/YFvGQoEZ2hhMiDCyv68ZROF97GcwAxxRwRgwSbpX5U',
-    'admin'
-);

backend/migrations/202502130001_create_jobs/down.sql

@@ -1,5 +0,0 @@
-DROP TRIGGER IF EXISTS trg_jobs_updated_at ON jobs;
-DROP FUNCTION IF EXISTS touch_jobs_updated_at;
-DROP INDEX IF EXISTS idx_jobs_job_type;
-DROP INDEX IF EXISTS idx_jobs_status_run_after;
-DROP TABLE IF EXISTS jobs;

backend/migrations/202502130001_create_jobs/up.sql

@@ -1,28 +0,0 @@
-CREATE TABLE jobs (
-    id UUID PRIMARY KEY,
-    job_type TEXT NOT NULL,
-    payload JSONB NOT NULL,
-    status TEXT NOT NULL DEFAULT 'queued',
-    attempts INTEGER NOT NULL DEFAULT 0,
-    run_after TIMESTAMPTZ NOT NULL DEFAULT now(),
-    last_error TEXT,
-    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    CONSTRAINT jobs_status_check CHECK (status IN ('queued', 'processing', 'succeeded', 'failed'))
-);
-
-CREATE INDEX idx_jobs_status_run_after ON jobs (status, run_after);
-CREATE INDEX idx_jobs_job_type ON jobs (job_type);
-
-CREATE OR REPLACE FUNCTION touch_jobs_updated_at()
-RETURNS TRIGGER AS $$
-BEGIN
-    NEW.updated_at = now();
-    RETURN NEW;
-END;
-$$ LANGUAGE plpgsql;
-
-CREATE TRIGGER trg_jobs_updated_at
-BEFORE UPDATE ON jobs
-FOR EACH ROW
-EXECUTE FUNCTION touch_jobs_updated_at();

backend/migrations/202502130002_create_document_assets/down.sql

@@ -1,3 +0,0 @@
-DROP INDEX IF EXISTS idx_document_assets_type;
-DROP INDEX IF EXISTS idx_document_assets_version;
-DROP TABLE IF EXISTS document_assets;

backend/migrations/202502130002_create_document_assets/up.sql

@@ -1,15 +0,0 @@
-CREATE TABLE document_assets (
-    id UUID PRIMARY KEY,
-    document_version_id UUID NOT NULL REFERENCES document_versions(id) ON DELETE CASCADE,
-    asset_type TEXT NOT NULL,
-    s3_key TEXT NOT NULL,
-    mime_type TEXT NOT NULL,
-    width INTEGER,
-    height INTEGER,
-    metadata JSONB NOT NULL DEFAULT '{}'::jsonb,
-    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
-    CONSTRAINT document_assets_unique UNIQUE (document_version_id, asset_type)
-);
-
-CREATE INDEX idx_document_assets_version ON document_assets(document_version_id);
-CREATE INDEX idx_document_assets_type ON document_assets(asset_type);

backend/migrations/202503040001_enforce_unique_folder_names/down.sql

@@ -1,4 +0,0 @@
-DROP INDEX IF EXISTS folders_parent_name_unique_idx;
-
-ALTER TABLE folders
-    ADD CONSTRAINT folders_parent_name_unique UNIQUE (parent_id, name);

backend/migrations/202503040001_enforce_unique_folder_names/up.sql

@@ -1,5 +0,0 @@
-ALTER TABLE folders
-    DROP CONSTRAINT IF EXISTS folders_parent_name_unique;
-
-CREATE UNIQUE INDEX folders_parent_name_unique_idx
-    ON folders (COALESCE(parent_id, '00000000-0000-0000-0000-000000000000'::uuid), name);

backend/migrations/202503090001_add_issued_at_to_documents/down.sql

@@ -1,2 +0,0 @@
-ALTER TABLE documents
-    DROP COLUMN issued_at;

backend/migrations/202503090001_add_issued_at_to_documents/up.sql

@@ -1,2 +0,0 @@
-ALTER TABLE documents
-    ADD COLUMN issued_at TIMESTAMPTZ;

backend/migrations/202503090002_add_name_to_documents/down.sql

@@ -1,2 +0,0 @@
-ALTER TABLE documents
-    DROP COLUMN name;

backend/migrations/202503090002_add_name_to_documents/up.sql

@@ -1,11 +0,0 @@
-ALTER TABLE documents
-    ADD COLUMN name VARCHAR(255);
-
-UPDATE documents
-SET name = CASE
-    WHEN filename ~ '\\.[^./]+$' THEN regexp_replace(filename, '\\.[^./]+$', '')
-    ELSE filename
-END;
-
-ALTER TABLE documents
-    ALTER COLUMN name SET NOT NULL;

backend/migrations/202503090003_rename_name_to_title/down.sql

@@ -1,2 +0,0 @@
-ALTER TABLE documents
-  RENAME COLUMN title TO name;

backend/migrations/202503090003_rename_name_to_title/up.sql

@@ -1,2 +0,0 @@
-ALTER TABLE documents
-  RENAME COLUMN name TO title;

backend/migrations/202503260001_initial_schema/down.sql

@@ -0,0 +1,21 @@
+DROP TRIGGER IF EXISTS trg_jobs_updated_at ON jobs;
+DROP FUNCTION IF EXISTS touch_jobs_updated_at();
+
+ALTER TABLE documents DROP CONSTRAINT IF EXISTS documents_current_version_fk;
+
+DROP TABLE IF EXISTS document_asset_objects;
+DROP TABLE IF EXISTS document_assets;
+DROP TABLE IF EXISTS document_versions;
+DROP TABLE IF EXISTS document_tags;
+DROP TABLE IF EXISTS document_correspondents;
+DROP TABLE IF EXISTS correspondents;
+DROP TABLE IF EXISTS documents;
+DROP TABLE IF EXISTS folders;
+DROP TABLE IF EXISTS tags;
+DROP TABLE IF EXISTS jobs;
+DROP TABLE IF EXISTS refresh_tokens;
+DROP TABLE IF EXISTS user_memberships;
+DROP TABLE IF EXISTS users;
+DROP TABLE IF EXISTS tenants;
+
+DROP EXTENSION IF EXISTS "pgcrypto";

backend/migrations/202503260001_initial_schema/up.sql

@@ -0,0 +1,244 @@
+CREATE EXTENSION IF NOT EXISTS "pgcrypto";
+
+CREATE TABLE tenants (
+    id UUID PRIMARY KEY,
+    slug TEXT NOT NULL UNIQUE,
+    storage_root TEXT,
+    quickwit_index TEXT,
+    status TEXT NOT NULL DEFAULT 'active',
+    config JSONB NOT NULL DEFAULT '{}'::jsonb,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE UNIQUE INDEX tenants_storage_root_unique
+    ON tenants (storage_root)
+    WHERE storage_root IS NOT NULL;
+
+CREATE UNIQUE INDEX tenants_quickwit_index_unique
+    ON tenants (quickwit_index)
+    WHERE quickwit_index IS NOT NULL;
+
+CREATE TABLE users (
+    id UUID PRIMARY KEY,
+    username VARCHAR(100) NOT NULL UNIQUE,
+    password_hash VARCHAR(255) NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE user_memberships (
+    id UUID PRIMARY KEY,
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
+    role TEXT NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    UNIQUE (user_id, tenant_id)
+);
+
+CREATE INDEX user_memberships_tenant_id_idx ON user_memberships (tenant_id);
+CREATE INDEX user_memberships_user_id_idx ON user_memberships (user_id);
+
+CREATE TABLE folders (
+    id UUID PRIMARY KEY,
+    name VARCHAR(255) NOT NULL,
+    parent_id UUID REFERENCES folders(id) ON DELETE SET NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    tenant_id UUID NOT NULL REFERENCES tenants(id)
+);
+
+CREATE INDEX idx_folders_parent ON folders(parent_id);
+CREATE INDEX folders_tenant_id_idx ON folders(tenant_id);
+CREATE UNIQUE INDEX folders_parent_name_unique_idx
+    ON folders (COALESCE(parent_id, '00000000-0000-0000-0000-000000000000'::uuid), name);
+
+CREATE TABLE documents (
+    id UUID PRIMARY KEY,
+    filename VARCHAR(255) NOT NULL,
+    original_name VARCHAR(255) NOT NULL,
+    content_type VARCHAR(100),
+    folder_id UUID REFERENCES folders(id) ON DELETE SET NULL,
+    uploaded_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ,
+    metadata JSONB NOT NULL DEFAULT '{}'::jsonb,
+    issued_at TIMESTAMPTZ,
+    title VARCHAR(255) NOT NULL,
+    current_version_id UUID NOT NULL,
+    tenant_id UUID NOT NULL REFERENCES tenants(id)
+);
+
+CREATE INDEX idx_documents_folder ON documents (folder_id);
+CREATE INDEX idx_documents_deleted_at ON documents (deleted_at);
+CREATE INDEX documents_tenant_id_idx ON documents (tenant_id);
+CREATE INDEX idx_documents_current_version_id ON documents (current_version_id);
+
+CREATE INDEX idx_documents_folder_title
+    ON documents (
+        COALESCE(folder_id, '00000000-0000-0000-0000-000000000000'::uuid),
+        title
+    )
+    WHERE deleted_at IS NULL;
+
+CREATE UNIQUE INDEX documents_unique_folder_filename
+    ON documents (
+        COALESCE(folder_id, '00000000-0000-0000-0000-000000000000'::uuid),
+        filename
+    )
+    WHERE deleted_at IS NULL;
+
+CREATE TABLE document_versions (
+    id UUID PRIMARY KEY,
+    document_id UUID NOT NULL REFERENCES documents(id) ON DELETE CASCADE,
+    version_number INT NOT NULL,
+    s3_key VARCHAR(500) NOT NULL,
+    size_bytes BIGINT NOT NULL,
+    checksum VARCHAR(64) NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    operations_summary JSONB NOT NULL DEFAULT '{}'::jsonb,
+    metadata JSONB NOT NULL DEFAULT '{}'::jsonb,
+    tenant_id UUID NOT NULL REFERENCES tenants(id),
+    CONSTRAINT document_versions_unique_version UNIQUE (document_id, version_number)
+);
+
+CREATE INDEX idx_document_versions_document ON document_versions (document_id);
+CREATE INDEX document_versions_tenant_id_idx ON document_versions (tenant_id);
+
+ALTER TABLE documents
+    ADD CONSTRAINT documents_current_version_fk
+    FOREIGN KEY (current_version_id)
+    REFERENCES document_versions(id)
+    DEFERRABLE INITIALLY DEFERRED;
+
+CREATE TABLE tags (
+    id UUID PRIMARY KEY,
+    label VARCHAR(100) NOT NULL UNIQUE,
+    color VARCHAR(7),
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    tenant_id UUID NOT NULL REFERENCES tenants(id)
+);
+
+CREATE INDEX tags_tenant_id_idx ON tags (tenant_id);
+
+CREATE TABLE document_tags (
+    document_id UUID NOT NULL REFERENCES documents(id) ON DELETE CASCADE,
+    tag_id UUID NOT NULL REFERENCES tags(id) ON DELETE CASCADE,
+    assigned_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    assigned_by UUID REFERENCES users(id),
+    tenant_id UUID NOT NULL REFERENCES tenants(id),
+    PRIMARY KEY (document_id, tag_id)
+);
+
+CREATE INDEX idx_document_tags_tag ON document_tags (tag_id);
+CREATE INDEX document_tags_tenant_id_idx ON document_tags (tenant_id);
+
+CREATE TABLE correspondents (
+    id UUID PRIMARY KEY,
+    name VARCHAR(255) NOT NULL,
+    metadata JSONB NOT NULL DEFAULT '{}'::jsonb,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    tenant_id UUID NOT NULL REFERENCES tenants(id),
+    CONSTRAINT correspondents_name_unique UNIQUE (name)
+);
+
+CREATE INDEX correspondents_tenant_id_idx ON correspondents (tenant_id);
+
+CREATE TABLE document_correspondents (
+    document_id UUID NOT NULL REFERENCES documents(id) ON DELETE CASCADE,
+    correspondent_id UUID NOT NULL REFERENCES correspondents(id) ON DELETE CASCADE,
+    role VARCHAR(32) NOT NULL,
+    assigned_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    assigned_by UUID REFERENCES users(id),
+    tenant_id UUID NOT NULL REFERENCES tenants(id),
+    PRIMARY KEY (document_id, correspondent_id, role),
+    CONSTRAINT document_correspondents_role_check CHECK (role IN ('sender', 'receiver', 'other'))
+);
+
+CREATE INDEX idx_document_correspondents_document ON document_correspondents (document_id);
+CREATE INDEX idx_document_correspondents_correspondent ON document_correspondents (correspondent_id);
+CREATE INDEX idx_document_correspondents_role ON document_correspondents (role);
+CREATE INDEX document_correspondents_tenant_id_idx ON document_correspondents (tenant_id);
+
+CREATE TABLE document_assets (
+    id UUID PRIMARY KEY,
+    document_version_id UUID NOT NULL REFERENCES document_versions(id) ON DELETE CASCADE,
+    asset_type TEXT NOT NULL,
+    mime_type TEXT NOT NULL,
+    metadata JSONB NOT NULL DEFAULT '{}'::jsonb,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    cardinality INTEGER,
+    tenant_id UUID NOT NULL REFERENCES tenants(id),
+    CONSTRAINT document_assets_unique UNIQUE (document_version_id, asset_type),
+    CONSTRAINT document_assets_cardinality_positive CHECK (cardinality IS NULL OR cardinality >= 1)
+);
+
+CREATE INDEX idx_document_assets_version ON document_assets (document_version_id);
+CREATE INDEX idx_document_assets_type ON document_assets (asset_type);
+CREATE INDEX document_assets_tenant_id_idx ON document_assets (tenant_id);
+
+CREATE TABLE document_asset_objects (
+    id UUID PRIMARY KEY,
+    asset_id UUID NOT NULL REFERENCES document_assets(id) ON DELETE CASCADE,
+    ordinal INTEGER NOT NULL,
+    s3_key TEXT NOT NULL,
+    metadata JSONB NOT NULL DEFAULT '{}'::jsonb,
+    tenant_id UUID NOT NULL REFERENCES tenants(id),
+    CONSTRAINT document_asset_objects_ordinal_positive CHECK (ordinal >= 1),
+    CONSTRAINT document_asset_objects_asset_ordinal_unique UNIQUE (asset_id, ordinal)
+);
+
+CREATE INDEX idx_document_asset_objects_asset_ordinal
+    ON document_asset_objects (asset_id, ordinal);
+
+CREATE INDEX document_asset_objects_tenant_id_idx
+    ON document_asset_objects (tenant_id);
+
+CREATE TABLE jobs (
+    id UUID PRIMARY KEY,
+    job_type TEXT NOT NULL,
+    payload JSONB NOT NULL,
+    status TEXT NOT NULL DEFAULT 'queued',
+    attempts INTEGER NOT NULL DEFAULT 0,
+    run_after TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    last_error TEXT,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    tenant_id UUID NOT NULL REFERENCES tenants(id),
+    CONSTRAINT jobs_status_check CHECK (status IN ('queued', 'processing', 'succeeded', 'failed'))
+);
+
+CREATE INDEX idx_jobs_status_run_after ON jobs (status, run_after);
+CREATE INDEX idx_jobs_job_type ON jobs (job_type);
+CREATE INDEX jobs_tenant_id_idx ON jobs (tenant_id);
+
+CREATE OR REPLACE FUNCTION touch_jobs_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER trg_jobs_updated_at
+BEFORE UPDATE ON jobs
+FOR EACH ROW
+EXECUTE FUNCTION touch_jobs_updated_at();
+
+CREATE TABLE refresh_tokens (
+    id UUID PRIMARY KEY,
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    token_hash TEXT NOT NULL,
+    issued_at TIMESTAMPTZ NOT NULL,
+    expires_at TIMESTAMPTZ NOT NULL,
+    revoked_at TIMESTAMPTZ,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    tenant_id UUID NOT NULL REFERENCES tenants(id)
+);
+
+CREATE INDEX idx_refresh_tokens_user_id ON refresh_tokens (user_id);
+CREATE INDEX idx_refresh_tokens_token_hash ON refresh_tokens (token_hash);
+CREATE INDEX refresh_tokens_tenant_id_idx ON refresh_tokens (tenant_id);

backend/src/auth/jwt.rs

@@ -13,6 +13,10 @@ pub struct JwtService {
     issuer: String,
     audience: String,
     expiry: Duration,
+    download_audience: String,
+    download_expiry: Duration,
+    selector_audience: String,
+    selector_expiry: Duration,
 }
 
 impl JwtService {
@@ -23,16 +27,20 @@ impl JwtService {
             issuer: config.jwt_issuer.clone(),
             audience: config.jwt_audience.clone(),
             expiry: Duration::minutes(config.jwt_expiry_minutes),
+            download_audience: config.download_token_audience.clone(),
+            download_expiry: Duration::minutes(config.download_token_expiry_minutes),
+            selector_audience: format!("{}:tenant-selector", config.jwt_audience),
+            selector_expiry: Duration::minutes(15),
         })
     }
 
-    pub fn generate_token(&self, user_id: Uuid, username: &str, role: &str) -> Result<String> {
+    pub fn generate_token(&self, user_id: Uuid, tenant_id: Uuid, username: &str) -> Result<String> {
         let now = Utc::now();
         let exp = now + self.expiry;
         let claims = Claims {
             sub: user_id,
+            tenant_id,
             username: username.to_owned(),
-            role: role.to_owned(),
             iss: self.issuer.clone(),
             aud: self.audience.clone(),
             iat: now.timestamp() as usize,
@@ -49,13 +57,84 @@ impl JwtService {
         let data = decode::<Claims>(token, &self.decoding, &validation)?;
         Ok(data.claims)
     }
+
+    pub fn generate_download_token(
+        &self,
+        document_id: Uuid,
+        user_id: Uuid,
+        tenant_id: Uuid,
+    ) -> Result<String> {
+        let now = Utc::now();
+        let exp = now + self.download_expiry;
+        let claims = DownloadClaims {
+            doc_id: document_id,
+            user_id,
+            tenant_id,
+            iss: self.issuer.clone(),
+            aud: self.download_audience.clone(),
+            iat: now.timestamp() as usize,
+            exp: exp.timestamp() as usize,
+        };
+
+        Ok(encode(&Header::default(), &claims, &self.encoding)?)
+    }
+
+    pub fn verify_download_token(&self, token: &str) -> Result<DownloadClaims> {
+        let mut validation = Validation::default();
+        validation.set_audience(&[self.download_audience.clone()]);
+        validation.set_issuer(&[self.issuer.clone()]);
+        let data = decode::<DownloadClaims>(token, &self.decoding, &validation)?;
+        Ok(data.claims)
+    }
+
+    pub fn generate_tenant_selector_token(&self, user_id: Uuid) -> Result<String> {
+        let now = Utc::now();
+        let exp = now + self.selector_expiry;
+        let claims = TenantSelectionClaims {
+            sub: user_id,
+            iss: self.issuer.clone(),
+            aud: self.selector_audience.clone(),
+            iat: now.timestamp() as usize,
+            exp: exp.timestamp() as usize,
+        };
+
+        Ok(encode(&Header::default(), &claims, &self.encoding)?)
+    }
+
+    pub fn verify_tenant_selector_token(&self, token: &str) -> Result<TenantSelectionClaims> {
+        let mut validation = Validation::default();
+        validation.set_audience(&[self.selector_audience.clone()]);
+        validation.set_issuer(&[self.issuer.clone()]);
+        let data = decode::<TenantSelectionClaims>(token, &self.decoding, &validation)?;
+        Ok(data.claims)
+    }
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Claims {
     pub sub: Uuid,
+    pub tenant_id: Uuid,
     pub username: String,
-    pub role: String,
+    pub iss: String,
+    pub aud: String,
+    pub iat: usize,
+    pub exp: usize,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DownloadClaims {
+    pub doc_id: Uuid,
+    pub user_id: Uuid,
+    pub tenant_id: Uuid,
+    pub iss: String,
+    pub aud: String,
+    pub iat: usize,
+    pub exp: usize,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct TenantSelectionClaims {
+    pub sub: Uuid,
     pub iss: String,
     pub aud: String,
     pub iat: usize,

backend/src/auth/mod.rs

@@ -6,13 +6,17 @@ use axum_extra::headers::{authorization::Bearer, Authorization};
 use axum_extra::TypedHeader;
 use serde::{Deserialize, Serialize};
 
-use crate::{error::AppError, state::AppState};
+use crate::{
+    error::AppError,
+    state::{AppState, PgPooledConnection},
+};
+use uuid::Uuid;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct AuthenticatedUser {
     pub user_id: uuid::Uuid,
     pub username: String,
-    pub role: String,
+    pub tenant_id: uuid::Uuid,
 }
 
 #[async_trait]
@@ -23,6 +27,10 @@ impl FromRequestParts<AppState> for AuthenticatedUser {
         parts: &mut Parts,
         state: &AppState,
     ) -> Result<Self, Self::Rejection> {
+        if let Some(user) = parts.extensions.get::<AuthenticatedUser>() {
+            return Ok(user.clone());
+        }
+
         let TypedHeader(Authorization(bearer)) =
             TypedHeader::<Authorization<Bearer>>::from_request_parts(parts, state)
                 .await
@@ -33,10 +41,48 @@ impl FromRequestParts<AppState> for AuthenticatedUser {
             .verify_token(bearer.token())
             .map_err(|_| AppError::unauthorized())?;
 
-        Ok(AuthenticatedUser {
+        let user = AuthenticatedUser {
             user_id: claims.sub,
             username: claims.username,
-            role: claims.role,
+            tenant_id: claims.tenant_id,
+        };
+
+        parts.extensions.insert(user.clone());
+
+        Ok(user)
+    }
+}
+
+pub struct TenantScopedConn {
+    pub conn: PgPooledConnection,
+    pub tenant_id: Uuid,
+    pub user_id: Uuid,
+    pub user: AuthenticatedUser,
+}
+
+impl TenantScopedConn {
+    pub fn conn(&mut self) -> &mut PgPooledConnection {
+        &mut self.conn
+    }
+}
+
+#[async_trait]
+impl FromRequestParts<AppState> for TenantScopedConn {
+    type Rejection = AppError;
+
+    async fn from_request_parts(
+        parts: &mut Parts,
+        state: &AppState,
+    ) -> Result<Self, Self::Rejection> {
+        let user = AuthenticatedUser::from_request_parts(parts, state).await?;
+        let tenant_id = user.tenant_id;
+        let conn = state.db_for_tenant(tenant_id)?;
+
+        Ok(Self {
+            conn,
+            tenant_id,
+            user_id: user.user_id,
+            user,
         })
     }
 }

backend/src/bin/admin.rs

@@ -0,0 +1,707 @@
+use std::env;
+use std::sync::Arc;
+
+use anyhow::{anyhow, bail, Context, Result};
+use argon2::{
+    password_hash::{PasswordHasher, SaltString},
+    Argon2,
+};
+use diesel::{dsl::exists, prelude::*, select};
+use once_cell::sync::Lazy;
+use reqwest::{Client, Method, StatusCode};
+use serde_json::json;
+use uuid::Uuid;
+
+use backend::{
+    config::AppConfig,
+    db::{self, PgPool},
+    jobs::{enqueue_job, JOB_ANALYZE_DOCUMENT},
+    models::{DocumentAsset, DocumentAssetObject, NewUser, NewUserMembership, Tenant, User},
+    s3,
+    schema::{
+        document_asset_objects, document_assets, documents, tenants, user_memberships, users,
+    },
+    storage::{ObjectStorage, S3Storage, TenantStorage},
+    utils::tracing::init_tracing,
+};
+
+use rand::rngs::OsRng;
+
+static QUICKWIT_INDEX_TEMPLATE: Lazy<serde_json::Value> = Lazy::new(|| {
+    json!({
+        "version": "0.8",
+        "index_id": "documents",
+        "doc_mapping": {
+            "tokenizers": [
+                {
+                    "name": "substring",
+                    "type": "ngram",
+                    "min_gram": 2,
+                    "max_gram": 20,
+                    "prefix_only": false
+                }
+            ],
+            "field_mappings": [
+                { "name": "tenant_id", "type": "text", "stored": true },
+                { "name": "document_id", "type": "text", "stored": true },
+                { "name": "version_id", "type": "text", "stored": true },
+                { "name": "title", "type": "text", "tokenizer": "substring", "stored": true },
+                { "name": "text", "type": "text", "tokenizer": "substring", "record": "position" }
+            ]
+        },
+        "search_settings": {
+            "default_search_fields": ["title", "text"]
+        }
+    })
+});
+
+#[derive(Debug)]
+enum Command {
+    CreateUser {
+        username: String,
+        password: String,
+    },
+    SetPassword {
+        username: String,
+        password: String,
+    },
+    ListUsers,
+    DeleteUser {
+        username: String,
+    },
+    CreateTenant {
+        slug: String,
+        storage_root: Option<String>,
+        quickwit_index: Option<String>,
+    },
+    DeleteTenant {
+        slug: String,
+    },
+    AddUserToTenant {
+        username: String,
+        slug: String,
+        role: Option<String>,
+    },
+    RemoveUserFromTenant {
+        username: String,
+        slug: String,
+    },
+    ReanalyzeDocuments {
+        slug: String,
+    },
+    ListTenants,
+    DeleteAssets(String),
+    QuickwitCreate(String),
+    QuickwitDelete(String),
+}
+
+impl Command {
+    fn usage() -> &'static str {
+        "Usage: admin\n\
+            create-user <username> <password>\n\
+            set-password <username> <password>\n\
+            list-users\n\
+            delete-user <username>\n\
+            create-tenant <slug> [storage_root] [quickwit_index]\n\
+            delete-tenant <slug>\n\
+            add-user-to-tenant <username> <slug> [role]\n\
+            remove-user-from-tenant <username> <slug>\n\
+            reanalyze-documents <slug>\n\
+            list-tenants\n\
+            delete-assets <slug>\n\
+            quickwit-create-index <slug>\n\
+            quickwit-delete-index <slug>"
+    }
+
+    fn parse() -> Result<Self> {
+        let mut args = env::args().skip(1);
+        match args.next().as_deref() {
+            Some("create-user") => Ok(Self::CreateUser {
+                username: args.next().ok_or_else(|| anyhow!("username required"))?,
+                password: args.next().ok_or_else(|| anyhow!("password required"))?,
+            }),
+            Some("set-password") => Ok(Self::SetPassword {
+                username: args.next().ok_or_else(|| anyhow!("username required"))?,
+                password: args.next().ok_or_else(|| anyhow!("password required"))?,
+            }),
+            Some("list-users") => Ok(Self::ListUsers),
+            Some("delete-user") => Ok(Self::DeleteUser {
+                username: args.next().ok_or_else(|| anyhow!("username required"))?,
+            }),
+            Some("create-tenant") => Ok(Self::CreateTenant {
+                slug: args.next().ok_or_else(|| anyhow!("tenant slug required"))?,
+                storage_root: args.next(),
+                quickwit_index: args.next(),
+            }),
+            Some("delete-tenant") => Ok(Self::DeleteTenant {
+                slug: args.next().ok_or_else(|| anyhow!("tenant slug required"))?,
+            }),
+            Some("add-user-to-tenant") => Ok(Self::AddUserToTenant {
+                username: args.next().ok_or_else(|| anyhow!("username required"))?,
+                slug: args.next().ok_or_else(|| anyhow!("tenant slug required"))?,
+                role: args.next(),
+            }),
+            Some("remove-user-from-tenant") => Ok(Self::RemoveUserFromTenant {
+                username: args.next().ok_or_else(|| anyhow!("username required"))?,
+                slug: args.next().ok_or_else(|| anyhow!("tenant slug required"))?,
+            }),
+            Some("reanalyze-documents") => Ok(Self::ReanalyzeDocuments {
+                slug: args.next().ok_or_else(|| anyhow!("tenant slug required"))?,
+            }),
+            Some("list-tenants") => Ok(Self::ListTenants),
+            Some("delete-assets") => Ok(Self::DeleteAssets(
+                args.next().ok_or_else(|| anyhow!("tenant slug required"))?,
+            )),
+            Some("quickwit-create-index") => Ok(Self::QuickwitCreate(
+                args.next().ok_or_else(|| anyhow!("tenant slug required"))?,
+            )),
+            Some("quickwit-delete-index") => Ok(Self::QuickwitDelete(
+                args.next().ok_or_else(|| anyhow!("tenant slug required"))?,
+            )),
+            _ => Err(anyhow!(Self::usage())),
+        }
+    }
+}
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    init_tracing("info");
+    let command = Command::parse()?;
+    let config = AppConfig::load_and_log("admin")?;
+    let pool = db::init_pool_with_size(&config.database_url, config.database_max_pool_size)?;
+
+    match command {
+        Command::CreateUser { username, password } => create_user(&pool, &username, &password)?,
+        Command::SetPassword { username, password } => set_password(&pool, &username, &password)?,
+        Command::ListUsers => list_users(&pool)?,
+        Command::DeleteUser { username } => delete_user(&pool, &username)?,
+        Command::CreateTenant {
+            slug,
+            storage_root,
+            quickwit_index,
+        } => create_tenant(&pool, &slug, storage_root, quickwit_index)?,
+        Command::DeleteTenant { slug } => delete_tenant(&pool, &slug)?,
+        Command::AddUserToTenant {
+            username,
+            slug,
+            role,
+        } => add_user_to_tenant(&pool, &username, &slug, role.as_deref())?,
+        Command::RemoveUserFromTenant { username, slug } => {
+            remove_user_from_tenant(&pool, &username, &slug)?
+        }
+        Command::ReanalyzeDocuments { slug } => reanalyze_documents(&pool, &slug)?,
+        Command::ListTenants => list_tenants(&pool)?,
+        Command::DeleteAssets(slug) => delete_assets_for_tenant(&config, &pool, &slug).await?,
+        Command::QuickwitCreate(slug) => {
+            quickwit_index(&config, &pool, &slug, Method::POST).await?
+        }
+        Command::QuickwitDelete(slug) => {
+            quickwit_index(&config, &pool, &slug, Method::DELETE).await?
+        }
+    }
+
+    Ok(())
+}
+
+fn create_user(pool: &PgPool, username: &str, password: &str) -> Result<()> {
+    if username.trim().is_empty() {
+        bail!("username must not be empty");
+    }
+    if password.is_empty() {
+        bail!("password must not be empty");
+    }
+
+    let mut conn = pool.get().context("failed to get database connection")?;
+    let exists: bool =
+        select(exists(users::table.filter(users::username.eq(username)))).get_result(&mut conn)?;
+    if exists {
+        bail!("user '{}' already exists", username);
+    }
+
+    let password_hash = hash_password(password)?;
+    let new_user = NewUser {
+        id: Uuid::new_v4(),
+        username: username.to_string(),
+        password_hash,
+    };
+
+    diesel::insert_into(users::table)
+        .values(&new_user)
+        .execute(&mut conn)?;
+
+    println!("created user '{}' (id: {})", username, new_user.id);
+    Ok(())
+}
+
+fn set_password(pool: &PgPool, username: &str, password: &str) -> Result<()> {
+    if password.is_empty() {
+        bail!("password must not be empty");
+    }
+
+    let mut conn = pool.get().context("failed to get database connection")?;
+    let password_hash = hash_password(password)?;
+
+    let updated = diesel::update(users::table.filter(users::username.eq(username)))
+        .set(users::password_hash.eq(password_hash))
+        .execute(&mut conn)?;
+
+    if updated == 0 {
+        bail!("user '{}' not found", username);
+    }
+
+    println!("updated password for '{}'", username);
+    Ok(())
+}
+
+fn hash_password(password: &str) -> Result<String> {
+    let salt = SaltString::generate(&mut OsRng);
+    let hash = Argon2::default()
+        .hash_password(password.as_bytes(), &salt)
+        .map_err(|err| anyhow!(err))?;
+    Ok(hash.to_string())
+}
+
+fn list_users(pool: &PgPool) -> Result<()> {
+    let mut conn = pool.get().context("failed to get database connection")?;
+
+    let users_list: Vec<User> = users::table.order(users::username.asc()).load(&mut conn)?;
+    if users_list.is_empty() {
+        println!("No users found.");
+        return Ok(());
+    }
+
+    for user in users_list {
+        let memberships: Vec<(Uuid, String, String)> = user_memberships::table
+            .inner_join(tenants::table)
+            .filter(user_memberships::user_id.eq(user.id))
+            .select((tenants::id, tenants::slug, user_memberships::role))
+            .order((tenants::slug.asc(), user_memberships::role.asc()))
+            .load(&mut conn)?;
+
+        if memberships.is_empty() {
+            println!("{} ({})", user.username, user.id);
+        } else {
+            let details: Vec<String> = memberships
+                .into_iter()
+                .map(|(_, slug, role)| format!("{}: {}", slug, role))
+                .collect();
+            println!("{} ({}) -> {}", user.username, user.id, details.join(", "));
+        }
+    }
+
+    Ok(())
+}
+
+fn delete_user(pool: &PgPool, username: &str) -> Result<()> {
+    let mut conn = pool.get().context("failed to get database connection")?;
+
+    let user: User = users::table
+        .filter(users::username.eq(username))
+        .first(&mut conn)
+        .optional()?
+        .ok_or_else(|| anyhow!("user '{}' not found", username))?;
+
+    diesel::delete(user_memberships::table.filter(user_memberships::user_id.eq(user.id)))
+        .execute(&mut conn)?;
+    diesel::delete(users::table.filter(users::id.eq(user.id))).execute(&mut conn)?;
+
+    println!("deleted user '{}'", username);
+    Ok(())
+}
+
+fn create_tenant(
+    pool: &PgPool,
+    slug: &str,
+    storage_root_arg: Option<String>,
+    quickwit_index_arg: Option<String>,
+) -> Result<()> {
+    if slug.trim().is_empty() {
+        bail!("tenant slug must not be empty");
+    }
+
+    let mut conn = pool.get().context("failed to get database connection")?;
+    let exists: bool =
+        select(exists(tenants::table.filter(tenants::slug.eq(slug)))).get_result(&mut conn)?;
+    if exists {
+        bail!("tenant '{}' already exists", slug);
+    }
+
+    let id = Uuid::new_v4();
+    let storage_root = storage_root_arg
+        .map(|mut s| {
+            if s.is_empty() {
+                format!("tenants/{}/", id)
+            } else {
+                if !s.ends_with('/') {
+                    s.push('/');
+                }
+                s
+            }
+        })
+        .unwrap_or_else(|| format!("tenants/{}/", id));
+    let quickwit_index = quickwit_index_arg.unwrap_or_else(|| format!("documents-{}", id));
+
+    diesel::insert_into(tenants::table)
+        .values((
+            tenants::id.eq(id),
+            tenants::slug.eq(slug),
+            tenants::storage_root.eq(Some(storage_root.clone())),
+            tenants::quickwit_index.eq(Some(quickwit_index.clone())),
+            tenants::status.eq("active"),
+            tenants::config.eq(serde_json::json!({})),
+        ))
+        .execute(&mut conn)?;
+
+    println!(
+        "created tenant '{}' with id {}, storage_root '{}', quickwit_index '{}'",
+        slug, id, storage_root, quickwit_index
+    );
+    Ok(())
+}
+
+fn delete_tenant(pool: &PgPool, slug: &str) -> Result<()> {
+    let mut conn = pool.get().context("failed to get database connection")?;
+
+    let tenant: Tenant = tenants::table
+        .filter(tenants::slug.eq(slug))
+        .first(&mut conn)
+        .optional()?
+        .ok_or_else(|| anyhow!("tenant '{}' not found", slug))?;
+
+    let member_exists: bool = select(exists(
+        user_memberships::table.filter(user_memberships::tenant_id.eq(tenant.id)),
+    ))
+    .get_result(&mut conn)?;
+    if member_exists {
+        bail!("tenant '{}' still has user memberships", slug);
+    }
+
+    diesel::delete(tenants::table.filter(tenants::id.eq(tenant.id))).execute(&mut conn)?;
+    println!("deleted tenant '{}'", slug);
+    Ok(())
+}
+
+fn add_user_to_tenant(pool: &PgPool, username: &str, slug: &str, role: Option<&str>) -> Result<()> {
+    let mut conn = pool.get().context("failed to get database connection")?;
+
+    let user: User = users::table
+        .filter(users::username.eq(username))
+        .first(&mut conn)
+        .optional()?
+        .ok_or_else(|| anyhow!("user '{}' not found", username))?;
+
+    let tenant: Tenant = tenants::table
+        .filter(tenants::slug.eq(slug))
+        .first(&mut conn)
+        .optional()?
+        .ok_or_else(|| anyhow!("tenant '{}' not found", slug))?;
+
+    let membership = NewUserMembership {
+        id: Uuid::new_v4(),
+        user_id: user.id,
+        tenant_id: tenant.id,
+        role: role.unwrap_or("user").to_string(),
+    };
+
+    diesel::insert_into(user_memberships::table)
+        .values(&membership)
+        .on_conflict((user_memberships::user_id, user_memberships::tenant_id))
+        .do_update()
+        .set(user_memberships::role.eq(&membership.role))
+        .execute(&mut conn)?;
+
+    println!(
+        "added user '{}' to tenant '{}' with role '{}'",
+        username, slug, membership.role
+    );
+    Ok(())
+}
+
+fn remove_user_from_tenant(pool: &PgPool, username: &str, slug: &str) -> Result<()> {
+    let mut conn = pool.get().context("failed to get database connection")?;
+
+    let user: User = users::table
+        .filter(users::username.eq(username))
+        .first(&mut conn)
+        .optional()?
+        .ok_or_else(|| anyhow!("user '{}' not found", username))?;
+
+    let tenant: Tenant = tenants::table
+        .filter(tenants::slug.eq(slug))
+        .first(&mut conn)
+        .optional()?
+        .ok_or_else(|| anyhow!("tenant '{}' not found", slug))?;
+
+    let removed = diesel::delete(
+        user_memberships::table
+            .filter(user_memberships::user_id.eq(user.id))
+            .filter(user_memberships::tenant_id.eq(tenant.id)),
+    )
+    .execute(&mut conn)?;
+
+    if removed == 0 {
+        println!("user '{}' was not a member of tenant '{}'", username, slug);
+    } else {
+        println!("removed user '{}' from tenant '{}'", username, slug);
+    }
+    Ok(())
+}
+
+fn reanalyze_documents(pool: &PgPool, slug: &str) -> Result<()> {
+    let mut conn = pool.get().context("failed to get database connection")?;
+
+    let tenant: Tenant = tenants::table
+        .filter(tenants::slug.eq(slug))
+        .first(&mut conn)
+        .optional()?
+        .ok_or_else(|| anyhow!("tenant '{}' not found", slug))?;
+
+    let targets: Vec<(Uuid, Uuid)> = documents::table
+        .filter(documents::tenant_id.eq(tenant.id))
+        .filter(documents::deleted_at.is_null())
+        .select((documents::id, documents::current_version_id))
+        .load(&mut conn)?;
+
+    if targets.is_empty() {
+        println!("tenant '{}' has no active documents", slug);
+        return Ok(());
+    }
+
+    let mut queued = 0usize;
+    for (document_id, version_id) in targets {
+        enqueue_job(
+            &mut conn,
+            tenant.id,
+            JOB_ANALYZE_DOCUMENT,
+            serde_json::json!({
+                "document_id": document_id,
+                "document_version_id": version_id,
+                "force": true,
+            }),
+            None,
+        )
+        .map_err(|err| anyhow!("failed to enqueue analyze job: {}", err))?;
+        queued += 1;
+    }
+
+    println!(
+        "queued {} documents for re-analysis in tenant '{}'",
+        queued, slug
+    );
+    Ok(())
+}
+
+fn list_tenants(pool: &PgPool) -> Result<()> {
+    let mut conn = pool.get().context("failed to get database connection")?;
+    let tenants: Vec<Tenant> = tenants::table
+        .order(tenants::slug.asc())
+        .load(&mut conn)
+        .context("failed to load tenants")?;
+
+    if tenants.is_empty() {
+        println!("No tenants found.");
+        return Ok(());
+    }
+
+    for tenant in tenants {
+        println!("{} ({})", tenant.slug, tenant.id);
+    }
+
+    Ok(())
+}
+
+async fn delete_assets_for_tenant(
+    config: &AppConfig,
+    pool: &PgPool,
+    tenant_slug: &str,
+) -> Result<()> {
+    let s3_client = s3::build_client(config).await?;
+    let storage: Arc<dyn ObjectStorage> =
+        Arc::new(S3Storage::new(s3_client, config.s3_bucket.clone()));
+
+    let mut conn = pool.get().context("failed to get database connection")?;
+    let tenant: Tenant = tenants::table
+        .filter(tenants::slug.eq(tenant_slug))
+        .first(&mut conn)
+        .optional()
+        .context("failed to load tenant")?
+        .ok_or_else(|| anyhow!("tenant '{}' not found", tenant_slug))?;
+
+    let tenant_storage = TenantStorage::new(Arc::clone(&storage), &tenant)
+        .with_context(|| format!("missing storage root for tenant {}", tenant.slug))?;
+
+    let assets: Vec<DocumentAsset> = document_assets::table
+        .filter(document_assets::tenant_id.eq(tenant.id))
+        .load(&mut conn)
+        .with_context(|| format!("failed to load assets for tenant {}", tenant.slug))?;
+
+    if assets.is_empty() {
+        println!("Tenant {}: no assets", tenant.slug);
+        return Ok(());
+    }
+
+    println!(
+        "Tenant {} ({}): deleting {} assets…",
+        tenant.slug,
+        tenant.id,
+        assets.len()
+    );
+
+    let asset_ids: Vec<Uuid> = assets.iter().map(|asset| asset.id).collect();
+
+    let objects: Vec<DocumentAssetObject> = document_asset_objects::table
+        .filter(document_asset_objects::tenant_id.eq(tenant.id))
+        .filter(document_asset_objects::asset_id.eq_any(&asset_ids))
+        .load(&mut conn)
+        .with_context(|| format!("failed to load asset objects for tenant {}", tenant.slug))?;
+
+    for object in &objects {
+        if let Err(err) = tenant_storage.delete_object(&object.s3_key).await {
+            eprintln!(
+                "Failed to delete object {} (tenant {}): {err}",
+                object.s3_key, tenant.slug
+            );
+        }
+    }
+
+    diesel::delete(
+        document_asset_objects::table
+            .filter(document_asset_objects::tenant_id.eq(tenant.id))
+            .filter(document_asset_objects::asset_id.eq_any(&asset_ids)),
+    )
+    .execute(&mut conn)
+    .with_context(|| format!("failed to remove asset objects for tenant {}", tenant.slug))?;
+
+    diesel::delete(document_assets::table.filter(document_assets::tenant_id.eq(tenant.id)))
+        .execute(&mut conn)
+        .with_context(|| format!("failed to remove asset records for tenant {}", tenant.slug))?;
+
+    println!("Tenant {}: asset records deleted.", tenant.slug);
+    Ok(())
+}
+
+async fn quickwit_index(
+    config: &AppConfig,
+    pool: &PgPool,
+    slug: &str,
+    method: Method,
+) -> Result<()> {
+    let endpoint = config
+        .quickwit_endpoint
+        .as_ref()
+        .ok_or_else(|| anyhow!("quickwit endpoint not configured"))?;
+
+    let mut conn = pool.get().context("failed to get database connection")?;
+    let tenant: Tenant = tenants::table
+        .filter(tenants::slug.eq(slug))
+        .first(&mut conn)
+        .optional()
+        .context("failed to query tenants")?
+        .ok_or_else(|| anyhow!("tenant '{}' not found", slug))?;
+
+    let client = Client::new();
+    let index_id = format!("documents-{}", tenant.id);
+    let base_endpoint = endpoint.trim_end_matches('/');
+
+    match method {
+        Method::POST => {
+            let payload = render_index_template(&index_id);
+            let response = client
+                .post(format!("{}/api/v1/indexes", base_endpoint))
+                .header("content-type", "application/json")
+                .body(payload)
+                .send()
+                .await
+                .context("failed to send create index request")?;
+
+            match response.status() {
+                status if status.is_success() => {
+                    diesel::update(tenants::table.filter(tenants::id.eq(tenant.id)))
+                        .set(tenants::quickwit_index.eq(Some(index_id.clone())))
+                        .execute(&mut conn)
+                        .context("failed to update tenant quickwit_index")?;
+
+                    println!(
+                        "Tenant '{}' quickwit index set to '{}'.",
+                        tenant.slug, index_id
+                    );
+                }
+                StatusCode::CONFLICT => {
+                    let lookup = client
+                        .get(format!("{}/api/v1/indexes/{}", base_endpoint, index_id))
+                        .send()
+                        .await
+                        .context("failed to verify existing quickwit index")?;
+
+                    let lookup_status = lookup.status();
+                    if !lookup_status.is_success() {
+                        let body = lookup.text().await.unwrap_or_default();
+                        bail!(
+                            "quickwit reported conflict but index lookup failed with status {}: {}",
+                            lookup_status,
+                            body
+                        );
+                    }
+
+                    diesel::update(tenants::table.filter(tenants::id.eq(tenant.id)))
+                        .set(tenants::quickwit_index.eq(Some(index_id.clone())))
+                        .execute(&mut conn)
+                        .context("failed to update tenant quickwit_index")?;
+
+                    println!(
+                        "Tenant '{}' quickwit index set to '{}'.",
+                        tenant.slug, index_id
+                    );
+                }
+                status => {
+                    let body = response.text().await.unwrap_or_default();
+                    bail!(
+                        "quickwit create index failed with status {}: {}",
+                        status,
+                        body
+                    );
+                }
+            }
+        }
+        Method::DELETE => {
+            let response = client
+                .delete(format!("{}/api/v1/indexes/{}", base_endpoint, index_id))
+                .send()
+                .await
+                .context("failed to send delete index request")?;
+
+            match response.status() {
+                status if status.is_success() || status == StatusCode::NOT_FOUND => {
+                    diesel::update(tenants::table.filter(tenants::id.eq(tenant.id)))
+                        .set(tenants::quickwit_index.eq::<Option<String>>(None))
+                        .execute(&mut conn)
+                        .context("failed to clear tenant quickwit_index")?;
+
+                    println!("Tenant '{}' quickwit index cleared.", tenant.slug);
+                }
+                status => {
+                    let body = response.text().await.unwrap_or_default();
+                    bail!(
+                        "quickwit delete index failed with status {}: {}",
+                        status,
+                        body
+                    );
+                }
+            }
+        }
+        _ => unreachable!(),
+    }
+
+    Ok(())
+}
+
+fn render_index_template(index_id: &str) -> String {
+    let mut template = QUICKWIT_INDEX_TEMPLATE.clone();
+    if let Some(obj) = template.as_object_mut() {
+        obj.insert(
+            "index_id".to_string(),
+            serde_json::Value::String(index_id.to_string()),
+        );
+    }
+    template.to_string()
+}

backend/src/bin/openapi_dump.rs

@@ -0,0 +1,8 @@
+use backend::openapi::ApiDoc;
+use utoipa::OpenApi;
+
+fn main() {
+    let spec = ApiDoc::openapi();
+    let json = serde_json::to_string_pretty(&spec).expect("serialize openapi");
+    println!("{}", json);
+}

backend/src/bin/webdav.rs

@@ -0,0 +1,28 @@
+use std::net::SocketAddr;
+
+use tokio::net::TcpListener;
+use tower::make::Shared;
+
+use backend::{routes::webdav, utils::bootstrap::init_component};
+
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    let state = init_component("webdav", None).await?;
+    let webdav_host = state.config.webdav_host.clone();
+    let webdav_port = state.config.webdav_port;
+    tracing::info!(
+        component = "webdav",
+        webdav_host = %webdav_host,
+        webdav_port,
+        "starting webdav server"
+    );
+
+    let listen_addr: SocketAddr = format!("{}:{}", webdav_host, webdav_port).parse()?;
+    let router = webdav::create_router().with_state(state.as_ref().clone());
+
+    let listener = TcpListener::bind(listen_addr).await?;
+    tracing::info!("listening for WebDAV on {}", listen_addr);
+
+    axum::serve(listener, Shared::new(router)).await?;
+    Ok(())
+}

backend/src/bin/worker.rs

@@ -1,25 +1,13 @@
-use std::{sync::Arc, time::Duration};
+use std::time::Duration;
 
 use tokio::signal;
-use tracing_subscriber::EnvFilter;
 
-use paperless_backend::{
+use backend::{default_handlers, utils::bootstrap::init_component, Worker};
-    auth::jwt::JwtService, config::AppConfig, db, default_handlers, s3::build_client,
-    state::AppState, storage::S3Storage, Worker,
-};
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    dotenv::dotenv().ok();
+    let state = init_component("worker", Some(1)).await?;
-    init_tracing();
+    tracing::info!(component = "worker", "starting worker process");
-
-    let config = AppConfig::from_env()?;
-    let pool = db::init_pool(&config.database_url)?;
-    let s3_client = build_client(&config).await?;
-    let storage = Arc::new(S3Storage::new(s3_client, config.s3_bucket.clone()));
-    let jwt = JwtService::from_config(&config)?;
-
-    let state = Arc::new(AppState::new(pool, config, storage, jwt));
     let worker = Worker::new(state, default_handlers(), Duration::from_secs(2));
 
     tokio::select! {
@@ -31,12 +19,3 @@ async fn main() -> anyhow::Result<()> {
 
     Ok(())
 }
-
-fn init_tracing() {
-    let filter = EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info"));
-    tracing_subscriber::fmt()
-        .with_env_filter(filter)
-        .with_target(false)
-        .compact()
-        .init();
-}

backend/src/config.rs

@@ -1,58 +1,169 @@
 use std::env;
 
 use anyhow::{Context, Result};
+use url::Url;
+
+use crate::db::DEFAULT_MAX_POOL_SIZE;
 
 #[derive(Clone, Debug)]
 pub struct AppConfig {
     pub database_url: String,
+    pub database_max_pool_size: u32,
     pub server_host: String,
     pub server_port: u16,
+    pub webdav_host: String,
+    pub webdav_port: u16,
     pub jwt_secret: String,
     pub jwt_issuer: String,
     pub jwt_audience: String,
     pub jwt_expiry_minutes: i64,
+    pub download_token_audience: String,
+    pub download_token_expiry_minutes: i64,
+    pub refresh_token_expiry_days: i64,
+    pub refresh_cookie_secure: bool,
+    pub refresh_cookie_domain: Option<String>,
+    pub cors_allowed_origin: Option<String>,
     pub aws_endpoint_url: Option<String>,
     pub aws_access_key_id: Option<String>,
     pub aws_secret_access_key: Option<String>,
     pub aws_region: String,
     pub s3_bucket: String,
+    pub quickwit_endpoint: Option<String>,
+    pub quickwit_index: Option<String>,
+    pub default_tenant_slug: String,
 }
 
 impl AppConfig {
+    pub fn load_and_log(component: &str) -> Result<Self> {
+        dotenv::dotenv().ok();
+        let config = Self::from_env()?;
+        tracing::info!(
+            component,
+            database_url = %config.redacted_database_url(),
+            pool_size = config.database_max_pool_size,
+            quickwit_enabled = config.quickwit_endpoint.is_some(),
+            s3_bucket = %config.s3_bucket,
+            "loaded backend configuration"
+        );
+        Ok(config)
+    }
+
     pub fn from_env() -> Result<Self> {
         let database_url = env::var("DATABASE_URL").context("DATABASE_URL must be set")?;
+        let database_max_pool_size = env::var("DATABASE_MAX_POOL_SIZE")
+            .ok()
+            .and_then(|value| value.parse().ok())
+            .unwrap_or(DEFAULT_MAX_POOL_SIZE);
         let server_host = env::var("SERVER_HOST").unwrap_or_else(|_| "127.0.0.1".to_string());
         let server_port = env::var("SERVER_PORT")
             .unwrap_or_else(|_| "3000".to_string())
             .parse()
             .context("SERVER_PORT must be a valid u16")?;
+        let webdav_host = env::var("WEBDAV_HOST").unwrap_or_else(|_| server_host.clone());
+        let webdav_port = env::var("WEBDAV_PORT")
+            .unwrap_or_else(|_| "3001".to_string())
+            .parse()
+            .context("WEBDAV_PORT must be a valid u16")?;
         let jwt_secret = env::var("JWT_SECRET").context("JWT_SECRET must be set")?;
-        let jwt_issuer = env::var("JWT_ISSUER").unwrap_or_else(|_| "paperless-neo".to_string());
+        let jwt_issuer = env::var("JWT_ISSUER").unwrap_or_else(|_| "papercrate".to_string());
         let jwt_audience =
-            env::var("JWT_AUDIENCE").unwrap_or_else(|_| "paperless-neo-clients".to_string());
+            env::var("JWT_AUDIENCE").unwrap_or_else(|_| "papercrate-clients".to_string());
         let jwt_expiry_minutes = env::var("JWT_EXPIRY_MINUTES")
             .unwrap_or_else(|_| "60".to_string())
             .parse()
             .context("JWT_EXPIRY_MINUTES must be an integer")?;
+        let download_token_audience = env::var("DOWNLOAD_TOKEN_AUDIENCE")
+            .unwrap_or_else(|_| "papercrate-download".to_string());
+        let download_token_expiry_minutes = env::var("DOWNLOAD_TOKEN_EXPIRY_MINUTES")
+            .unwrap_or_else(|_| "60".to_string())
+            .parse()
+            .context("DOWNLOAD_TOKEN_EXPIRY_MINUTES must be an integer")?;
+        let refresh_token_expiry_days = env::var("REFRESH_TOKEN_EXPIRY_DAYS")
+            .unwrap_or_else(|_| "30".to_string())
+            .parse()
+            .context("REFRESH_TOKEN_EXPIRY_DAYS must be an integer")?;
+        let refresh_cookie_secure = env::var("REFRESH_COOKIE_SECURE")
+            .map(|v| v == "1" || v.eq_ignore_ascii_case("true"))
+            .unwrap_or(false);
+        let refresh_cookie_domain = env::var("REFRESH_COOKIE_DOMAIN").ok();
+        let cors_allowed_origin = env::var("CORS_ALLOWED_ORIGIN").ok();
         let aws_endpoint_url = env::var("AWS_ENDPOINT_URL").ok();
         let aws_access_key_id = env::var("AWS_ACCESS_KEY_ID").ok();
         let aws_secret_access_key = env::var("AWS_SECRET_ACCESS_KEY").ok();
         let aws_region = env::var("AWS_REGION").unwrap_or_else(|_| "us-east-1".to_string());
         let s3_bucket = env::var("S3_BUCKET").context("S3_BUCKET must be set")?;
+        let quickwit_endpoint = env::var("QUICKWIT_ENDPOINT").ok();
+        let quickwit_index = env::var("QUICKWIT_INDEX").ok();
+        let default_tenant_slug =
+            env::var("DEFAULT_TENANT_SLUG").unwrap_or_else(|_| "admin".to_string());
 
         Ok(Self {
             database_url,
+            database_max_pool_size,
             server_host,
             server_port,
+            webdav_host,
+            webdav_port,
             jwt_secret,
             jwt_issuer,
             jwt_audience,
             jwt_expiry_minutes,
+            download_token_audience,
+            download_token_expiry_minutes,
+            refresh_token_expiry_days,
+            refresh_cookie_secure,
+            refresh_cookie_domain,
+            cors_allowed_origin,
             aws_endpoint_url,
             aws_access_key_id,
             aws_secret_access_key,
             aws_region,
             s3_bucket,
+            quickwit_endpoint,
+            quickwit_index,
+            default_tenant_slug,
         })
     }
+
+    pub fn redacted_database_url(&self) -> String {
+        redact_database_url(&self.database_url)
+    }
+}
+
+fn redact_database_url(raw: &str) -> String {
+    match Url::parse(raw) {
+        Ok(mut parsed) => {
+            if parsed.password().is_some() {
+                let _ = parsed.set_password(Some("*****"));
+                parsed.to_string()
+            } else {
+                raw.to_string()
+            }
+        }
+        Err(_) => "***".to_string(),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::redact_database_url;
+
+    #[test]
+    fn redacts_password_in_database_url() {
+        let redacted = redact_database_url("postgres://user:secret@localhost/db");
+        assert!(redacted.contains("postgres://user:*****@"));
+        assert!(!redacted.contains("secret"));
+    }
+
+    #[test]
+    fn handles_url_without_password() {
+        let redacted = redact_database_url("postgres://localhost/db");
+        assert_eq!(redacted, "postgres://localhost/db");
+    }
+
+    #[test]
+    fn falls_back_when_parse_fails() {
+        let redacted = redact_database_url("not a url");
+        assert_eq!(redacted, "***");
+    }
 }

backend/src/db.rs

@@ -5,10 +5,17 @@ use diesel::r2d2::{ConnectionManager, Pool};
 
 pub type PgPool = Pool<ConnectionManager<PgConnection>>;
 
+pub const DEFAULT_MAX_POOL_SIZE: u32 = 2;
+
 pub fn init_pool(database_url: &str) -> anyhow::Result<PgPool> {
+    init_pool_with_size(database_url, DEFAULT_MAX_POOL_SIZE)
+}
+
+pub fn init_pool_with_size(database_url: &str, max_size: u32) -> anyhow::Result<PgPool> {
     let manager = ConnectionManager::<PgConnection>::new(database_url);
+    let pool_size = max_size.max(1);
     let pool = Pool::builder()
-        .max_size(16)
+        .max_size(pool_size)
         .connection_timeout(Duration::from_secs(10))
         .build(manager)?;
     Ok(pool)

backend/src/error.rs

@@ -12,6 +12,7 @@ pub type AppResult<T> = Result<T, AppError>;
 pub struct AppError {
     status: StatusCode,
     message: String,
+    code: Option<String>,
 }
 
 impl AppError {
@@ -19,6 +20,7 @@ impl AppError {
         Self {
             status,
             message: message.into(),
+            code: None,
         }
     }
 
@@ -26,6 +28,10 @@ impl AppError {
         Self::new(StatusCode::BAD_REQUEST, message)
     }
 
+    pub fn conflict(message: impl Into<String>) -> Self {
+        Self::new(StatusCode::CONFLICT, message)
+    }
+
     pub fn unauthorized() -> Self {
         Self::new(StatusCode::UNAUTHORIZED, "unauthorized")
     }
@@ -37,6 +43,11 @@ impl AppError {
     pub fn internal<E: Display>(error: E) -> Self {
         Self::new(StatusCode::INTERNAL_SERVER_ERROR, error.to_string())
     }
+
+    pub fn with_code(mut self, code: impl Into<String>) -> Self {
+        self.code = Some(code.into());
+        self
+    }
 }
 
 impl IntoResponse for AppError {
@@ -44,6 +55,7 @@ impl IntoResponse for AppError {
         let status = self.status;
         let body = Json(ErrorResponse {
             error: self.message,
+            code: self.code,
         });
         (status, body).into_response()
     }
@@ -52,6 +64,8 @@ impl IntoResponse for AppError {
 #[derive(Serialize)]
 struct ErrorResponse {
     error: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    code: Option<String>,
 }
 
 impl From<diesel::result::Error> for AppError {

backend/src/jobs.rs

@@ -17,6 +17,8 @@ pub const STATUS_FAILED: &str = "failed";
 
 pub const JOB_ANALYZE_DOCUMENT: &str = "analyze-document";
 pub const JOB_GENERATE_THUMBNAILS: &str = "generate-thumbnails";
+pub const JOB_GENERATE_OCR_TEXT: &str = "generate-ocr-text";
+pub const JOB_INDEX_DOCUMENT_TEXT: &str = "index-document-text";
 
 #[derive(Debug, Error)]
 pub enum JobQueueError {
@@ -28,6 +30,7 @@ pub type JobQueueResult<T> = Result<T, JobQueueError>;
 
 pub fn enqueue_job(
     conn: &mut PgConnection,
+    tenant_id: Uuid,
     job_type: &str,
     payload: Value,
     run_after: Option<NaiveDateTime>,
@@ -38,6 +41,7 @@ pub fn enqueue_job(
         payload,
         status: STATUS_QUEUED.to_string(),
         run_after: run_after.unwrap_or_else(|| Utc::now().naive_utc()),
+        tenant_id,
     };
 
     diesel::insert_into(jobs::table)

backend/src/lib.rs

@@ -4,10 +4,13 @@ pub mod db;
 pub mod error;
 pub mod jobs;
 pub mod models;
+pub mod openapi;
 pub mod routes;
 pub mod s3;
 pub mod schema;
 pub mod state;
 pub mod storage;
+pub mod tenants;
+pub mod utils;
 pub mod workers;
 pub use workers::{default_handlers, Worker};

backend/src/main.rs

@@ -1,47 +1,28 @@
 use std::net::SocketAddr;
-use std::sync::Arc;
 
 use tokio::net::TcpListener;
 use tower::make::Shared;
-use tracing_subscriber::EnvFilter;
 
-use paperless_backend::auth::jwt::JwtService;
+use backend::{routes, utils::bootstrap::init_component};
-use paperless_backend::config::AppConfig;
-use paperless_backend::db;
-use paperless_backend::routes;
-use paperless_backend::s3::build_client;
-use paperless_backend::state::AppState;
-use paperless_backend::storage::S3Storage;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    dotenv::dotenv().ok();
+    let state = init_component("api", None).await?;
-    init_tracing();
+    let server_host = state.config.server_host.clone();
+    let server_port = state.config.server_port;
+    tracing::info!(
+        component = "api",
+        server_host = %server_host,
+        server_port,
+        "starting api server"
+    );
 
-    let config = AppConfig::from_env()?;
+    let router = routes::create_router(state.as_ref().clone());
-    let pool = db::init_pool(&config.database_url)?;
-    let s3_client = build_client(&config).await?;
-    let storage = Arc::new(S3Storage::new(s3_client, config.s3_bucket.clone()));
-    let jwt = JwtService::from_config(&config)?;
 
-    let state = AppState::new(pool, config, storage, jwt);
+    let addr: SocketAddr = format!("{}:{}", server_host, server_port).parse()?;
-
-    let router = routes::create_router(state.clone());
-
-    let addr: SocketAddr =
-        format!("{}:{}", state.config.server_host, state.config.server_port).parse()?;
     let listener = TcpListener::bind(addr).await?;
     tracing::info!("listening on {}", addr);
 
     axum::serve(listener, Shared::new(router)).await?;
     Ok(())
 }
-
-fn init_tracing() {
-    let filter = EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new("info"));
-    tracing_subscriber::fmt()
-        .with_env_filter(filter)
-        .with_target(false)
-        .compact()
-        .init();
-}

backend/src/models.rs

@@ -4,13 +4,48 @@ use uuid::Uuid;
 
 use crate::schema::*;
 
+#[derive(Debug, Clone, Queryable, Identifiable, Associations)]
+#[diesel(table_name = user_memberships)]
+#[diesel(belongs_to(User, foreign_key = user_id))]
+#[diesel(belongs_to(Tenant, foreign_key = tenant_id))]
+pub struct UserMembership {
+    pub id: Uuid,
+    pub user_id: Uuid,
+    pub tenant_id: Uuid,
+    pub role: String,
+    pub created_at: NaiveDateTime,
+    pub updated_at: NaiveDateTime,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = user_memberships)]
+pub struct NewUserMembership {
+    pub id: Uuid,
+    pub user_id: Uuid,
+    pub tenant_id: Uuid,
+    pub role: String,
+}
+
+#[derive(Debug, Clone, Queryable, Identifiable)]
+#[diesel(table_name = tenants)]
+#[diesel(primary_key(id))]
+pub struct Tenant {
+    pub id: Uuid,
+    pub slug: String,
+    pub storage_root: Option<String>,
+    pub quickwit_index: Option<String>,
+    pub status: String,
+    pub config: serde_json::Value,
+    pub created_at: NaiveDateTime,
+    pub updated_at: NaiveDateTime,
+}
+
 #[derive(Debug, Clone, Queryable, Identifiable)]
 #[diesel(table_name = users)]
 pub struct User {
     pub id: Uuid,
     pub username: String,
     pub password_hash: String,
-    pub role: String,
     pub created_at: NaiveDateTime,
     pub updated_at: NaiveDateTime,
 }
@@ -21,7 +56,6 @@ pub struct NewUser {
     pub id: Uuid,
     pub username: String,
     pub password_hash: String,
-    pub role: String,
 }
 
 #[derive(Debug, Clone, Queryable, Identifiable)]
@@ -30,9 +64,9 @@ pub struct Folder {
     pub id: Uuid,
     pub name: String,
     pub parent_id: Option<Uuid>,
-    pub path_cache: Option<String>,
     pub created_at: NaiveDateTime,
     pub updated_at: NaiveDateTime,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Insertable)]
@@ -41,7 +75,7 @@ pub struct NewFolder {
     pub id: Uuid,
     pub name: String,
     pub parent_id: Option<Uuid>,
-    pub path_cache: Option<String>,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Clone, Queryable, Identifiable, Associations)]
@@ -53,13 +87,14 @@ pub struct Document {
     pub original_name: String,
     pub content_type: Option<String>,
     pub folder_id: Option<Uuid>,
-    pub current_version: i32,
     pub uploaded_at: NaiveDateTime,
     pub updated_at: NaiveDateTime,
     pub deleted_at: Option<NaiveDateTime>,
     pub metadata: serde_json::Value,
     pub issued_at: Option<NaiveDateTime>,
     pub title: String,
+    pub current_version_id: Uuid,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Insertable)]
@@ -70,10 +105,11 @@ pub struct NewDocument {
     pub original_name: String,
     pub content_type: Option<String>,
     pub folder_id: Option<Uuid>,
-    pub current_version: i32,
+    pub current_version_id: Uuid,
     pub metadata: serde_json::Value,
     pub issued_at: Option<NaiveDateTime>,
     pub title: String,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Clone, Queryable, Identifiable, Associations)]
@@ -88,6 +124,8 @@ pub struct DocumentVersion {
     pub checksum: String,
     pub created_at: NaiveDateTime,
     pub operations_summary: serde_json::Value,
+    pub metadata: serde_json::Value,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Insertable)]
@@ -100,6 +138,8 @@ pub struct NewDocumentVersion {
     pub size_bytes: i64,
     pub checksum: String,
     pub operations_summary: serde_json::Value,
+    pub metadata: serde_json::Value,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Clone, Queryable, Identifiable, Associations)]
@@ -109,12 +149,11 @@ pub struct DocumentAsset {
     pub id: Uuid,
     pub document_version_id: Uuid,
     pub asset_type: String,
-    pub s3_key: String,
     pub mime_type: String,
-    pub width: Option<i32>,
-    pub height: Option<i32>,
     pub metadata: serde_json::Value,
     pub created_at: NaiveDateTime,
+    pub cardinality: Option<i32>,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Insertable)]
@@ -123,11 +162,33 @@ pub struct NewDocumentAsset {
     pub id: Uuid,
     pub document_version_id: Uuid,
     pub asset_type: String,
-    pub s3_key: String,
     pub mime_type: String,
-    pub width: Option<i32>,
-    pub height: Option<i32>,
     pub metadata: serde_json::Value,
+    pub cardinality: Option<i32>,
+    pub tenant_id: Uuid,
+}
+
+#[derive(Debug, Clone, Queryable, Identifiable, Associations)]
+#[diesel(table_name = document_asset_objects)]
+#[diesel(belongs_to(DocumentAsset, foreign_key = asset_id))]
+pub struct DocumentAssetObject {
+    pub id: Uuid,
+    pub asset_id: Uuid,
+    pub ordinal: i32,
+    pub s3_key: String,
+    pub metadata: serde_json::Value,
+    pub tenant_id: Uuid,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = document_asset_objects)]
+pub struct NewDocumentAssetObject {
+    pub id: Uuid,
+    pub asset_id: Uuid,
+    pub ordinal: i32,
+    pub s3_key: String,
+    pub metadata: serde_json::Value,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Clone, Queryable, Identifiable)]
@@ -142,6 +203,7 @@ pub struct Job {
     pub last_error: Option<String>,
     pub created_at: NaiveDateTime,
     pub updated_at: NaiveDateTime,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Insertable)]
@@ -152,6 +214,7 @@ pub struct NewJob {
     pub payload: serde_json::Value,
     pub status: String,
     pub run_after: NaiveDateTime,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Clone, Queryable, Identifiable)]
@@ -161,6 +224,7 @@ pub struct Tag {
     pub label: String,
     pub color: Option<String>,
     pub created_at: NaiveDateTime,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Insertable)]
@@ -169,6 +233,7 @@ pub struct NewTag {
     pub id: Uuid,
     pub label: String,
     pub color: Option<String>,
+    pub tenant_id: Uuid,
 }
 
 #[allow(dead_code)]
@@ -182,6 +247,7 @@ pub struct DocumentTag {
     pub tag_id: Uuid,
     pub assigned_at: NaiveDateTime,
     pub assigned_by: Option<Uuid>,
+    pub tenant_id: Uuid,
 }
 
 #[derive(Debug, Insertable)]
@@ -190,4 +256,75 @@ pub struct NewDocumentTag {
     pub document_id: Uuid,
     pub tag_id: Uuid,
     pub assigned_by: Option<Uuid>,
+    pub tenant_id: Uuid,
+}
+
+#[derive(Debug, Clone, Queryable, Identifiable)]
+#[diesel(table_name = correspondents)]
+pub struct Correspondent {
+    pub id: Uuid,
+    pub name: String,
+    pub metadata: serde_json::Value,
+    pub created_at: NaiveDateTime,
+    pub updated_at: NaiveDateTime,
+    pub tenant_id: Uuid,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = correspondents)]
+pub struct NewCorrespondent {
+    pub id: Uuid,
+    pub name: String,
+    pub metadata: serde_json::Value,
+    pub tenant_id: Uuid,
+}
+
+#[derive(Debug, Clone, Queryable, Associations)]
+#[diesel(table_name = document_correspondents)]
+#[diesel(belongs_to(Document))]
+#[diesel(belongs_to(Correspondent))]
+#[diesel(primary_key(document_id, correspondent_id, role))]
+pub struct DocumentCorrespondent {
+    pub document_id: Uuid,
+    pub correspondent_id: Uuid,
+    pub role: String,
+    pub assigned_at: NaiveDateTime,
+    pub assigned_by: Option<Uuid>,
+    pub tenant_id: Uuid,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = document_correspondents)]
+pub struct NewDocumentCorrespondent {
+    pub document_id: Uuid,
+    pub correspondent_id: Uuid,
+    pub role: String,
+    pub assigned_by: Option<Uuid>,
+    pub tenant_id: Uuid,
+}
+
+#[derive(Debug, Clone, Queryable, Identifiable, Associations)]
+#[diesel(table_name = refresh_tokens)]
+#[diesel(belongs_to(User))]
+pub struct RefreshToken {
+    pub id: Uuid,
+    pub user_id: Uuid,
+    pub token_hash: String,
+    pub issued_at: NaiveDateTime,
+    pub expires_at: NaiveDateTime,
+    pub revoked_at: Option<NaiveDateTime>,
+    pub created_at: NaiveDateTime,
+    pub updated_at: NaiveDateTime,
+    pub tenant_id: Uuid,
+}
+
+#[derive(Debug, Insertable)]
+#[diesel(table_name = refresh_tokens)]
+pub struct NewRefreshToken {
+    pub id: Uuid,
+    pub user_id: Uuid,
+    pub token_hash: String,
+    pub issued_at: NaiveDateTime,
+    pub expires_at: NaiveDateTime,
+    pub tenant_id: Uuid,
 }

backend/src/openapi.rs

@@ -0,0 +1,951 @@
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use utoipa::{IntoParams, OpenApi, ToSchema};
+use uuid::Uuid;
+
+#[derive(OpenApi)]
+#[openapi(
+    paths(
+        doc::health_check,
+        doc::login,
+        doc::refresh,
+        doc::logout,
+        doc::me,
+        doc::select_tenant,
+        doc::list_documents,
+        doc::check_document,
+        doc::upload_document,
+        doc::get_document,
+        doc::update_document,
+        doc::delete_document,
+        doc::download_document,
+        doc::download_with_token,
+        doc::move_document,
+        doc::assign_tags,
+        doc::remove_tag,
+        doc::bulk_move_documents,
+        doc::bulk_update_tags,
+        doc::bulk_assign_correspondents,
+        doc::assign_correspondents,
+        doc::remove_correspondent,
+        doc::reanalyze_selected_documents,
+        doc::list_document_assets,
+        doc::request_document_assets,
+        doc::get_document_asset,
+        doc::create_folder,
+        doc::ensure_folder_path,
+        doc::get_folder,
+        doc::list_folder_contents,
+        doc::delete_folder,
+        doc::update_folder,
+        doc::list_tags,
+        doc::create_tag,
+        doc::update_tag,
+        doc::delete_tag,
+        doc::list_correspondents,
+        doc::create_correspondent,
+        doc::update_correspondent,
+        doc::delete_correspondent,
+    ),
+    components(
+        schemas(
+            schemas::LoginRequest,
+            schemas::AccessTokenResponse,
+            schemas::TenantSummary,
+            schemas::TenantSelectionResponse,
+            schemas::TenantSelectionRequest,
+            schemas::LoginResponseVariants,
+            schemas::DocumentResponse,
+            schemas::DocumentDetailResponse,
+            schemas::DocumentVersion,
+            schemas::DocumentAssetSummary,
+            schemas::DocumentAssetDetail,
+            schemas::DocumentAssetObject,
+            schemas::DocumentCorrespondent,
+            schemas::DocumentTag,
+            schemas::DocumentDownloadResponse,
+            schemas::UpdateDocumentRequest,
+            schemas::BulkMoveDocumentsRequest,
+            schemas::BulkMoveDocumentsResponse,
+            schemas::AssignTagsRequest,
+            schemas::MoveDocumentRequest,
+            schemas::BulkTagRequest,
+            schemas::BulkTagResponse,
+            schemas::CorrespondentAssignment,
+            schemas::BulkTagAction,
+            schemas::BulkCorrespondentsRequest,
+            schemas::BulkCorrespondentsResponse,
+            schemas::BulkCorrespondentAction,
+            schemas::AssignCorrespondentsRequest,
+            schemas::RemoveCorrespondentParams,
+            schemas::ReanalyzeRequest,
+            schemas::ReanalyzeResponse,
+            schemas::DocumentAssetRequestParams,
+            schemas::AssetObjectsQuery,
+            schemas::DocumentCheckQuery,
+            schemas::DocumentCheckResponse,
+            schemas::UploadDocumentForm,
+            schemas::CreateFolderRequest,
+            schemas::EnsureFolderPathRequest,
+            schemas::FolderResponse,
+            schemas::FolderInfo,
+            schemas::FolderContentsResponse,
+            schemas::FolderDocumentSummary,
+            schemas::UpdateFolderRequest,
+            schemas::FolderContentsParams,
+            schemas::TagCatalogEntry,
+            schemas::CreateTagRequest,
+            schemas::UpdateTagRequest,
+            schemas::CorrespondentCatalogEntry,
+            schemas::CreateCorrespondentRequest,
+            schemas::UpdateCorrespondentRequest,
+        )
+    ),
+    tags(
+        (name = "Health", description = "Service health"),
+        (name = "Auth", description = "Authentication"),
+        (name = "Documents", description = "Document management"),
+        (name = "Assets", description = "Document assets"),
+        (name = "Folders", description = "Folder management"),
+        (name = "Tags", description = "Tag catalog"),
+        (name = "Correspondents", description = "Correspondent catalog")
+    )
+)]
+pub struct ApiDoc;
+
+#[allow(dead_code)]
+mod doc {
+    use super::schemas::*;
+    use uuid::Uuid;
+
+    #[allow(dead_code)]
+    fn __keep_uuid_import() {
+        let _ = Uuid::nil();
+    }
+
+    #[utoipa::path(
+        get,
+        path = "/api/health",
+        responses((status = 200, description = "Service is healthy")),
+        tag = "Health"
+    )]
+    pub(super) fn health_check() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/auth/login",
+        request_body = LoginRequest,
+        responses(
+            (status = 200, description = "Login succeeded", body = LoginResponseVariants),
+            (status = 401, description = "Invalid credentials")
+        ),
+        tag = "Auth"
+    )]
+    pub(super) fn login() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/auth/refresh",
+        responses(
+            (status = 200, description = "Refreshed access token", body = AccessTokenResponse),
+            (status = 401, description = "Missing or invalid refresh token")
+        ),
+        tag = "Auth"
+    )]
+    pub(super) fn refresh() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/auth/logout",
+        responses((status = 204, description = "Session revoked")),
+        tag = "Auth"
+    )]
+    pub(super) fn logout() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/auth/me",
+        responses((status = 200, description = "Authenticated principal", body = AccessTokenResponse)),
+        tag = "Auth"
+    )]
+    pub(super) fn me() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/auth/select-tenant",
+        request_body = TenantSelectionRequest,
+        responses((status = 200, description = "Tenant selected", body = AccessTokenResponse)),
+        tag = "Auth"
+    )]
+    pub(super) fn select_tenant() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/documents",
+        params(DocumentListQuery),
+        responses((status = 200, description = "List documents", body = [DocumentResponse])),
+        tag = "Documents"
+    )]
+    pub(super) fn list_documents() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/documents",
+        request_body = UploadDocumentForm,
+        responses(
+            (status = 201, description = "Document created", body = DocumentDetailResponse),
+            (status = 200, description = "Existing document reused", body = DocumentDetailResponse),
+            (status = 204, description = "Upload skipped because the document already exists")
+        ),
+        tag = "Documents"
+    )]
+    pub(super) fn upload_document() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/documents/check",
+        params(DocumentCheckQuery),
+        responses((status = 200, description = "Checksum lookup", body = DocumentCheckResponse)),
+        tag = "Documents"
+    )]
+    pub(super) fn check_document() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/documents/{id}",
+        params(("id" = Uuid, Path, description = "Document ID")),
+        responses((status = 200, description = "Document detail", body = DocumentDetailResponse)),
+        tag = "Documents"
+    )]
+    pub(super) fn get_document() {}
+
+    #[utoipa::path(
+        patch,
+        path = "/api/documents/{id}",
+        params(("id" = Uuid, Path, description = "Document ID")),
+        request_body = UpdateDocumentRequest,
+        responses((status = 200, description = "Updated document", body = DocumentDetailResponse)),
+        tag = "Documents"
+    )]
+    pub(super) fn update_document() {}
+
+    #[utoipa::path(
+        delete,
+        path = "/api/documents/{id}",
+        params(("id" = Uuid, Path, description = "Document ID")),
+        responses((status = 204, description = "Document deleted")),
+        tag = "Documents"
+    )]
+    pub(super) fn delete_document() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/documents/{id}/download",
+        params(("id" = Uuid, Path, description = "Document ID")),
+        responses((status = 200, description = "Download metadata", body = DocumentDownloadResponse)),
+        tag = "Documents"
+    )]
+    pub(super) fn download_document() {}
+
+    #[utoipa::path(
+        get,
+        path = "/download/{token}",
+        params(("token" = String, Path, description = "Download token")),
+        responses((status = 302, description = "Redirect to pre-signed URL")),
+        tag = "Documents"
+    )]
+    pub(super) fn download_with_token() {}
+
+    #[utoipa::path(
+        patch,
+        path = "/api/documents/{id}/folder",
+        params(("id" = Uuid, Path, description = "Document ID")),
+        request_body = MoveDocumentRequest,
+        responses((status = 204, description = "Document moved")),
+        tag = "Documents"
+    )]
+    pub(super) fn move_document() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/documents/{id}/tags",
+        params(("id" = Uuid, Path, description = "Document ID")),
+        request_body = AssignTagsRequest,
+        responses((status = 204, description = "Tags assigned")),
+        tag = "Documents"
+    )]
+    pub(super) fn assign_tags() {}
+
+    #[utoipa::path(
+        delete,
+        path = "/api/documents/{id}/tags/{tag_id}",
+        params(
+            ("id" = Uuid, Path, description = "Document ID"),
+            ("tag_id" = Uuid, Path, description = "Tag ID")
+        ),
+        responses((status = 204, description = "Tag removed")),
+        tag = "Documents"
+    )]
+    pub(super) fn remove_tag() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/documents/bulk/move",
+        request_body = BulkMoveDocumentsRequest,
+        responses((status = 200, description = "Bulk move outcome", body = BulkMoveDocumentsResponse)),
+        tag = "Documents"
+    )]
+    pub(super) fn bulk_move_documents() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/documents/bulk/tags",
+        request_body = BulkTagRequest,
+        responses((status = 200, description = "Bulk tag outcome", body = BulkTagResponse)),
+        tag = "Documents"
+    )]
+    pub(super) fn bulk_update_tags() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/documents/bulk/correspondents",
+        request_body = BulkCorrespondentsRequest,
+        responses((status = 200, description = "Bulk correspondents outcome", body = BulkCorrespondentsResponse)),
+        tag = "Documents"
+    )]
+    pub(super) fn bulk_assign_correspondents() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/documents/{id}/correspondents",
+        params(("id" = Uuid, Path, description = "Document ID")),
+        request_body = AssignCorrespondentsRequest,
+        responses((status = 204, description = "Correspondents assigned")),
+        tag = "Documents"
+    )]
+    pub(super) fn assign_correspondents() {}
+
+    #[utoipa::path(
+        delete,
+        path = "/api/documents/{id}/correspondents/{correspondent_id}",
+        params(
+            ("id" = Uuid, Path, description = "Document ID"),
+            ("correspondent_id" = Uuid, Path, description = "Correspondent ID"),
+            RemoveCorrespondentParams
+        ),
+        responses((status = 204, description = "Correspondent removed")),
+        tag = "Documents"
+    )]
+    pub(super) fn remove_correspondent() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/documents/bulk/reanalyze",
+        request_body = ReanalyzeRequest,
+        responses((status = 200, description = "Reanalyze queued", body = ReanalyzeResponse)),
+        tag = "Documents"
+    )]
+    pub(super) fn reanalyze_selected_documents() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/documents/{id}/assets",
+        params(("id" = Uuid, Path, description = "Document ID")),
+        responses((status = 200, description = "Document assets", body = [DocumentAssetSummary])),
+        tag = "Assets"
+    )]
+    pub(super) fn list_document_assets() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/documents/{id}/assets",
+        params(
+            ("id" = Uuid, Path, description = "Document ID"),
+            DocumentAssetRequestParams
+        ),
+        responses((status = 202, description = "Asset generation requested")),
+        tag = "Assets"
+    )]
+    pub(super) fn request_document_assets() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/assets/{asset_id}",
+        params(
+            ("asset_id" = Uuid, Path, description = "Asset ID"),
+            AssetObjectsQuery
+        ),
+        responses((status = 200, description = "Asset detail", body = DocumentAssetDetail)),
+        tag = "Assets"
+    )]
+    pub(super) fn get_document_asset() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/folders",
+        request_body = CreateFolderRequest,
+        responses((status = 200, description = "Folder created", body = FolderResponse)),
+        tag = "Folders"
+    )]
+    pub(super) fn create_folder() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/folders/path",
+        request_body = EnsureFolderPathRequest,
+        responses((status = 200, description = "Folder path ensured", body = FolderResponse)),
+        tag = "Folders"
+    )]
+    pub(super) fn ensure_folder_path() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/folders/{id}",
+        params(("id" = Uuid, Path, description = "Folder ID")),
+        responses((status = 200, description = "Folder detail", body = FolderResponse)),
+        tag = "Folders"
+    )]
+    pub(super) fn get_folder() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/folders/{id}/contents",
+        params(
+            ("id" = Uuid, Path, description = "Folder ID"),
+            FolderContentsParams
+        ),
+        responses((status = 200, description = "Folder contents", body = FolderContentsResponse)),
+        tag = "Folders"
+    )]
+    pub(super) fn list_folder_contents() {}
+
+    #[utoipa::path(
+        delete,
+        path = "/api/folders/{id}",
+        params(("id" = Uuid, Path, description = "Folder ID")),
+        responses((status = 204, description = "Folder deleted")),
+        tag = "Folders"
+    )]
+    pub(super) fn delete_folder() {}
+
+    #[utoipa::path(
+        patch,
+        path = "/api/folders/{id}",
+        params(("id" = Uuid, Path, description = "Folder ID")),
+        request_body = UpdateFolderRequest,
+        responses((status = 204, description = "Folder updated")),
+        tag = "Folders"
+    )]
+    pub(super) fn update_folder() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/tags",
+        responses((status = 200, description = "Tags", body = [TagCatalogEntry])),
+        tag = "Tags"
+    )]
+    pub(super) fn list_tags() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/tags",
+        request_body = CreateTagRequest,
+        responses((status = 200, description = "Tag created", body = TagCatalogEntry)),
+        tag = "Tags"
+    )]
+    pub(super) fn create_tag() {}
+
+    #[utoipa::path(
+        patch,
+        path = "/api/tags/{id}",
+        params(("id" = Uuid, Path, description = "Tag ID")),
+        request_body = UpdateTagRequest,
+        responses((status = 200, description = "Tag updated", body = TagCatalogEntry)),
+        tag = "Tags"
+    )]
+    pub(super) fn update_tag() {}
+
+    #[utoipa::path(
+        delete,
+        path = "/api/tags/{id}",
+        params(("id" = Uuid, Path, description = "Tag ID")),
+        responses((status = 204, description = "Tag deleted")),
+        tag = "Tags"
+    )]
+    pub(super) fn delete_tag() {}
+
+    #[utoipa::path(
+        get,
+        path = "/api/correspondents",
+        responses((status = 200, description = "Correspondents", body = [CorrespondentCatalogEntry])),
+        tag = "Correspondents"
+    )]
+    pub(super) fn list_correspondents() {}
+
+    #[utoipa::path(
+        post,
+        path = "/api/correspondents",
+        request_body = CreateCorrespondentRequest,
+        responses((status = 200, description = "Correspondent created", body = CorrespondentCatalogEntry)),
+        tag = "Correspondents"
+    )]
+    pub(super) fn create_correspondent() {}
+
+    #[utoipa::path(
+        patch,
+        path = "/api/correspondents/{id}",
+        params(("id" = Uuid, Path, description = "Correspondent ID")),
+        request_body = UpdateCorrespondentRequest,
+        responses((status = 200, description = "Correspondent updated", body = CorrespondentCatalogEntry)),
+        tag = "Correspondents"
+    )]
+    pub(super) fn update_correspondent() {}
+
+    #[utoipa::path(
+        delete,
+        path = "/api/correspondents/{id}",
+        params(("id" = Uuid, Path, description = "Correspondent ID")),
+        responses((status = 204, description = "Correspondent deleted")),
+        tag = "Correspondents"
+    )]
+    pub(super) fn delete_correspondent() {}
+}
+
+#[cfg(test)]
+mod tests {
+    use super::ApiDoc;
+    use utoipa::OpenApi;
+
+    #[test]
+    fn openapi_serializes() {
+        let spec = ApiDoc::openapi();
+        let _ = serde_json::to_string(&spec).expect("serialize openapi");
+    }
+}
+
+pub mod schemas {
+    use super::*;
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct LoginRequest {
+        pub username: String,
+        pub password: String,
+        #[schema(nullable)]
+        pub preferred_tenant_slug: Option<String>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct AccessTokenResponse {
+        pub access_token: String,
+        pub token_type: String,
+        pub expires_in: i64,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct TenantSummary {
+        pub tenant_id: Uuid,
+        pub slug: String,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct TenantSelectionResponse {
+        pub selection_token: String,
+        pub tenants: Vec<TenantSummary>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct TenantSelectionRequest {
+        pub tenant_id: Uuid,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    #[serde(untagged)]
+    pub enum LoginResponseVariants {
+        Token(AccessTokenResponse),
+        Selection(TenantSelectionResponse),
+    }
+
+    #[derive(Serialize, Deserialize, IntoParams, ToSchema)]
+    #[into_params(parameter_in = Query)]
+    pub struct DocumentListQuery {
+        pub folder_id: Option<Uuid>,
+        pub include_deleted: Option<bool>,
+        pub include_descendants: Option<bool>,
+        pub query: Option<String>,
+        pub tags: Option<String>,
+        pub correspondents: Option<String>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentTag {
+        pub id: Uuid,
+        pub label: String,
+        #[schema(nullable)]
+        pub color: Option<String>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentAssetObject {
+        pub id: Uuid,
+        pub ordinal: i32,
+        pub metadata: Value,
+        #[schema(nullable)]
+        pub url: Option<String>,
+        #[schema(nullable)]
+        pub expires_at: Option<i64>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentAssetSummary {
+        pub id: Uuid,
+        pub asset_type: String,
+        pub mime_type: String,
+        pub metadata: Value,
+        #[schema(nullable)]
+        pub cardinality: Option<i32>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentAssetDetail {
+        pub id: Uuid,
+        pub asset_type: String,
+        pub mime_type: String,
+        pub metadata: Value,
+        pub created_at: String,
+        #[schema(nullable)]
+        pub cardinality: Option<i32>,
+        pub objects: Vec<DocumentAssetObject>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentVersion {
+        pub id: Uuid,
+        pub version_number: i32,
+        pub checksum: String,
+        pub size_bytes: i64,
+        pub created_at: String,
+        pub metadata: Value,
+        #[schema(nullable)]
+        pub operations_summary: Option<Value>,
+        #[schema(nullable)]
+        pub assets: Option<Vec<DocumentAssetSummary>>,
+        pub download_path: String,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentCorrespondent {
+        pub id: Uuid,
+        pub name: String,
+        pub role: String,
+        pub metadata: Value,
+        pub assigned_at: String,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentResponse {
+        pub id: Uuid,
+        pub filename: String,
+        pub title: String,
+        pub original_name: String,
+        #[schema(nullable)]
+        pub content_type: Option<String>,
+        #[schema(nullable)]
+        pub folder_id: Option<Uuid>,
+        pub uploaded_at: String,
+        pub updated_at: String,
+        #[schema(nullable)]
+        pub deleted_at: Option<String>,
+        #[schema(nullable)]
+        pub issued_at: Option<String>,
+        pub metadata: Value,
+        pub tags: Vec<DocumentTag>,
+        #[schema(nullable)]
+        pub correspondents: Option<Vec<DocumentCorrespondent>>,
+        #[schema(nullable)]
+        pub current_version: Option<DocumentVersion>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentDetailResponse {
+        pub document: DocumentResponse,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentDownloadResponse {
+        pub url: String,
+        pub expires_in: u64,
+        pub filename: String,
+        #[schema(nullable)]
+        pub content_type: Option<String>,
+        pub size_bytes: i64,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct UpdateDocumentRequest {
+        #[schema(nullable)]
+        pub title: Option<String>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct BulkMoveDocumentsRequest {
+        pub document_ids: Vec<Uuid>,
+        #[schema(nullable)]
+        pub folder_id: Option<Uuid>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct BulkMoveDocumentsResponse {
+        pub updated: usize,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct AssignTagsRequest {
+        pub tag_ids: Vec<Uuid>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct MoveDocumentRequest {
+        #[schema(nullable)]
+        pub folder_id: Option<Uuid>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    #[serde(rename_all = "snake_case")]
+    pub enum BulkTagAction {
+        Add,
+        Remove,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct BulkTagRequest {
+        pub document_ids: Vec<Uuid>,
+        pub tag_ids: Vec<Uuid>,
+        pub action: BulkTagAction,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct BulkTagResponse {
+        pub added: usize,
+        pub removed: usize,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct CorrespondentAssignment {
+        pub correspondent_id: Uuid,
+        pub role: String,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct AssignCorrespondentsRequest {
+        pub assignments: Vec<CorrespondentAssignment>,
+        #[serde(default)]
+        pub replace: bool,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    #[serde(rename_all = "lowercase")]
+    pub enum BulkCorrespondentAction {
+        Add,
+        Remove,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct BulkCorrespondentsRequest {
+        pub document_ids: Vec<Uuid>,
+        pub assignments: Vec<CorrespondentAssignment>,
+        #[serde(default = "default_bulk_correspondent_action")]
+        pub action: BulkCorrespondentAction,
+    }
+
+    fn default_bulk_correspondent_action() -> BulkCorrespondentAction {
+        BulkCorrespondentAction::Add
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct BulkCorrespondentsResponse {
+        pub assigned: usize,
+        pub removed: usize,
+    }
+
+    #[derive(Serialize, Deserialize, IntoParams, ToSchema)]
+    #[into_params(parameter_in = Query)]
+    pub struct RemoveCorrespondentParams {
+        pub role: String,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct ReanalyzeRequest {
+        pub document_ids: Vec<Uuid>,
+        #[serde(default)]
+        pub force: bool,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct ReanalyzeResponse {
+        pub queued: usize,
+    }
+
+    #[derive(Serialize, Deserialize, IntoParams, ToSchema)]
+    #[into_params(parameter_in = Query)]
+    pub struct DocumentAssetRequestParams {
+        #[serde(default)]
+        pub force: Option<bool>,
+    }
+
+    #[derive(Serialize, Deserialize, IntoParams, ToSchema)]
+    #[into_params(parameter_in = Query)]
+    pub struct AssetObjectsQuery {
+        #[serde(default)]
+        pub start: Option<i32>,
+        #[serde(default)]
+        pub limit: Option<i32>,
+    }
+
+    #[derive(Serialize, Deserialize, IntoParams, ToSchema)]
+    #[into_params(parameter_in = Query)]
+    pub struct DocumentCheckQuery {
+        pub checksum: String,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct DocumentCheckResponse {
+        pub exists: bool,
+        #[schema(nullable)]
+        pub document_id: Option<Uuid>,
+        #[schema(nullable)]
+        pub title: Option<String>,
+        #[schema(nullable)]
+        pub filename: Option<String>,
+        #[schema(nullable)]
+        pub version_id: Option<Uuid>,
+        #[schema(nullable)]
+        pub version_number: Option<i32>,
+        #[schema(nullable)]
+        pub uploaded_at: Option<String>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct UploadDocumentForm {
+        #[schema(value_type = String, format = Binary)]
+        pub file: String,
+        #[schema(nullable)]
+        pub folder_id: Option<Uuid>,
+        #[schema(nullable)]
+        pub metadata: Option<Value>,
+        #[schema(nullable)]
+        pub title: Option<String>,
+        #[schema(nullable, value_type = Vec<Uuid>)]
+        pub tag_ids: Option<Vec<Uuid>>,
+        #[schema(nullable, value_type = Vec<CorrespondentAssignment>)]
+        pub correspondents: Option<Vec<CorrespondentAssignment>>,
+        #[schema(nullable, example = "2024-01-01T00:00:00Z")]
+        pub issued_at: Option<String>,
+        #[schema(nullable)]
+        pub skip_existing: Option<bool>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct CreateFolderRequest {
+        pub name: String,
+        #[schema(nullable)]
+        pub parent_id: Option<Uuid>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct EnsureFolderPathRequest {
+        #[schema(nullable)]
+        pub parent_id: Option<Uuid>,
+        pub segments: Vec<String>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct FolderInfo {
+        pub id: Uuid,
+        pub name: String,
+        #[schema(nullable)]
+        pub parent_id: Option<Uuid>,
+        pub created_at: String,
+        pub updated_at: String,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct FolderResponse {
+        pub folder: FolderInfo,
+    }
+
+    #[derive(Serialize, Deserialize, IntoParams, ToSchema)]
+    #[into_params(parameter_in = Query)]
+    pub struct FolderContentsParams {
+        #[serde(default)]
+        pub include_documents: Option<bool>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct FolderDocumentSummary {
+        pub id: Uuid,
+        pub title: String,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct FolderContentsResponse {
+        #[schema(nullable)]
+        pub folder: Option<FolderInfo>,
+        pub subfolders: Vec<FolderInfo>,
+        pub documents: Vec<FolderDocumentSummary>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct UpdateFolderRequest {
+        #[schema(nullable)]
+        pub parent_id: Option<Option<Uuid>>,
+        #[schema(nullable)]
+        pub name: Option<String>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct TagCatalogEntry {
+        pub id: Uuid,
+        pub label: String,
+        #[schema(nullable)]
+        pub color: Option<String>,
+        pub usage_count: i64,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct CreateTagRequest {
+        pub label: String,
+        #[schema(nullable)]
+        pub color: Option<String>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct UpdateTagRequest {
+        #[schema(nullable)]
+        pub label: Option<Option<String>>,
+        #[schema(nullable)]
+        pub color: Option<Option<String>>,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct CorrespondentCatalogEntry {
+        pub id: Uuid,
+        pub name: String,
+        pub metadata: Value,
+        pub role_counts: Value,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct CreateCorrespondentRequest {
+        pub name: String,
+        #[schema(default, value_type = Object)]
+        pub metadata: Value,
+    }
+
+    #[derive(Serialize, Deserialize, ToSchema)]
+    pub struct UpdateCorrespondentRequest {
+        #[schema(nullable)]
+        pub name: Option<String>,
+        #[schema(nullable)]
+        pub metadata: Option<Value>,
+    }
+}

backend/src/routes/auth.rs

@@ -1,19 +1,41 @@
-use axum::{extract::State, http::StatusCode, response::IntoResponse, Json};
+use axum::{
-use diesel::prelude::*;
+    extract::State,
+    http::{header::SET_COOKIE, HeaderMap, HeaderValue, StatusCode},
+    response::{IntoResponse, Response},
+    Json,
+};
+use axum_extra::{
+    headers::{authorization::Bearer, Authorization, Cookie},
+    typed_header::TypedHeader,
+};
+use chrono::{Duration as ChronoDuration, Utc};
+use diesel::{pg::PgConnection, prelude::*};
+use rand::{rngs::OsRng, RngCore};
 use serde::{Deserialize, Serialize};
+use sha2::{Digest, Sha256};
+use uuid::Uuid;
 
 use crate::{
     auth::{password, AuthenticatedUser},
     error::{AppError, AppResult},
-    models::User,
+    models::{NewRefreshToken, RefreshToken, Tenant, User, UserMembership},
-    schema::users::dsl,
+    schema::{
+        refresh_tokens, tenants::dsl as tenant_dsl, user_memberships::dsl as memberships_dsl,
+        users::dsl,
+    },
     state::AppState,
 };
 
+use crate::schema::refresh_tokens::dsl as refresh_dsl;
+
+const REFRESH_COOKIE_NAME: &str = "refresh_token";
+
 #[derive(Deserialize)]
 pub struct LoginRequest {
     pub username: String,
     pub password: String,
+    #[serde(default)]
+    pub preferred_tenant_slug: Option<String>,
 }
 
 #[derive(Serialize)]
@@ -23,11 +45,28 @@ pub struct LoginResponse {
     pub expires_in: i64,
 }
 
+#[derive(Serialize)]
+pub struct TenantSummary {
+    pub tenant_id: Uuid,
+    pub slug: String,
+}
+
+#[derive(Serialize)]
+pub struct TenantSelectionResponse {
+    pub selection_token: String,
+    pub tenants: Vec<TenantSummary>,
+}
+
+#[derive(Deserialize)]
+pub struct TenantSelectionRequest {
+    pub tenant_id: Uuid,
+}
+
 pub async fn login(
     State(state): State<AppState>,
     Json(payload): Json<LoginRequest>,
-) -> AppResult<Json<LoginResponse>> {
+) -> AppResult<Response> {
-    let mut conn = state.db()?;
+    let mut conn = state.db_unscoped()?;
 
     let user: User = dsl::users
         .filter(dsl::username.eq(&payload.username))
@@ -40,22 +79,269 @@ pub async fn login(
         return Err(AppError::unauthorized());
     }
 
-    let token = state
+    let memberships: Vec<(UserMembership, Tenant)> = memberships_dsl::user_memberships
+        .inner_join(tenant_dsl::tenants)
+        .filter(memberships_dsl::user_id.eq(user.id))
+        .load(&mut conn)?;
+
+    if memberships.is_empty() {
+        return Err(AppError::unauthorized());
+    }
+
+    let preferred_slug = payload
+        .preferred_tenant_slug
+        .as_ref()
+        .map(|slug| slug.trim().to_string())
+        .filter(|slug| !slug.is_empty());
+
+    if let Some(tenant) = preferred_slug.as_ref().and_then(|slug| {
+        memberships
+            .iter()
+            .find(|(_, tenant)| tenant.slug.eq_ignore_ascii_case(slug))
+    }) {
+        return issue_session(&state, &mut conn, &user, tenant.1.id);
+    }
+
+    if memberships.len() == 1 {
+        let tenant_id = memberships[0].1.id;
+        return issue_session(&state, &mut conn, &user, tenant_id);
+    }
+
+    let selection_token = state
         .jwt
-        .generate_token(user.id, &user.username, &user.role)
+        .generate_tenant_selector_token(user.id)
         .map_err(AppError::from)?;
 
-    Ok(Json(LoginResponse {
+    let tenants = memberships
-        access_token: token,
+        .into_iter()
-        token_type: "Bearer".to_string(),
+        .map(|(_, tenant)| TenantSummary {
-        expires_in: state.config.jwt_expiry_minutes * 60,
+            tenant_id: tenant.id,
-    }))
+            slug: tenant.slug,
+        })
+        .collect();
+
+    let response = Json(TenantSelectionResponse {
+        selection_token,
+        tenants,
+    })
+    .into_response();
+
+    Ok(response)
 }
 
-pub async fn logout(_user: AuthenticatedUser) -> impl IntoResponse {
+pub async fn refresh(
-    StatusCode::NO_CONTENT
+    State(state): State<AppState>,
+    jar: Option<TypedHeader<Cookie>>,
+) -> AppResult<Response> {
+    let cookies = jar.ok_or_else(AppError::unauthorized)?;
+    let refresh_value = cookies
+        .get(REFRESH_COOKIE_NAME)
+        .ok_or_else(AppError::unauthorized)?;
+
+    let hashed = hash_refresh_token(refresh_value);
+    let mut conn = state.db_unscoped()?;
+    let now = Utc::now();
+    let now_naive = now.naive_utc();
+
+    let token = match refresh_dsl::refresh_tokens
+        .filter(refresh_dsl::token_hash.eq(&hashed))
+        .filter(refresh_dsl::revoked_at.is_null())
+        .filter(refresh_dsl::expires_at.gt(now_naive))
+        .first::<RefreshToken>(&mut conn)
+    {
+        Ok(token) => token,
+        Err(diesel::result::Error::NotFound) => return Err(AppError::unauthorized()),
+        Err(err) => return Err(AppError::from(err)),
+    };
+
+    diesel::update(refresh_dsl::refresh_tokens.filter(refresh_dsl::id.eq(token.id)))
+        .set((
+            refresh_dsl::revoked_at.eq(now_naive),
+            refresh_dsl::updated_at.eq(now_naive),
+        ))
+        .execute(&mut conn)?;
+
+    let user: User = dsl::users
+        .find(token.user_id)
+        .first(&mut conn)
+        .map_err(AppError::from)?;
+
+    issue_session(&state, &mut conn, &user, token.tenant_id)
+}
+
+pub async fn select_tenant(
+    State(state): State<AppState>,
+    TypedHeader(Authorization(bearer)): TypedHeader<Authorization<Bearer>>,
+    Json(payload): Json<TenantSelectionRequest>,
+) -> AppResult<Response> {
+    let claims = state
+        .jwt
+        .verify_tenant_selector_token(bearer.token())
+        .map_err(|_| AppError::unauthorized())?;
+
+    let mut conn = state.db_unscoped()?;
+
+    let membership_exists = memberships_dsl::user_memberships
+        .filter(memberships_dsl::user_id.eq(claims.sub))
+        .filter(memberships_dsl::tenant_id.eq(payload.tenant_id))
+        .inner_join(tenant_dsl::tenants)
+        .select(memberships_dsl::id)
+        .first::<Uuid>(&mut conn)
+        .optional()?;
+
+    if membership_exists.is_none() {
+        return Err(AppError::unauthorized());
+    }
+
+    let user: User = dsl::users
+        .find(claims.sub)
+        .first(&mut conn)
+        .map_err(AppError::from)?;
+
+    issue_session(&state, &mut conn, &user, payload.tenant_id)
+}
+
+pub async fn logout(
+    State(state): State<AppState>,
+    user: AuthenticatedUser,
+    jar: Option<TypedHeader<Cookie>>,
+) -> AppResult<(HeaderMap, StatusCode)> {
+    let mut conn = state.db_unscoped()?;
+    let now = Utc::now().naive_utc();
+    let mut rows_affected = 0;
+
+    if let Some(cookies) = jar {
+        if let Some(value) = cookies.get(REFRESH_COOKIE_NAME) {
+            let hashed = hash_refresh_token(value);
+            rows_affected = diesel::update(
+                refresh_dsl::refresh_tokens
+                    .filter(refresh_dsl::token_hash.eq(hashed))
+                    .filter(refresh_dsl::user_id.eq(user.user_id))
+                    .filter(refresh_dsl::revoked_at.is_null()),
+            )
+            .set((
+                refresh_dsl::revoked_at.eq(now),
+                refresh_dsl::updated_at.eq(now),
+            ))
+            .execute(&mut conn)
+            .unwrap_or(0);
+        }
+    }
+
+    if rows_affected == 0 {
+        let _ = diesel::update(
+            refresh_dsl::refresh_tokens
+                .filter(refresh_dsl::user_id.eq(user.user_id))
+                .filter(refresh_dsl::revoked_at.is_null()),
+        )
+        .set((
+            refresh_dsl::revoked_at.eq(now),
+            refresh_dsl::updated_at.eq(now),
+        ))
+        .execute(&mut conn);
+    }
+
+    let mut headers = HeaderMap::new();
+    headers.insert(SET_COOKIE, build_clear_refresh_cookie(&state));
+    Ok((headers, StatusCode::NO_CONTENT))
 }
 
 pub async fn me(user: AuthenticatedUser) -> Json<AuthenticatedUser> {
     Json(user)
 }
+
+fn issue_session(
+    state: &AppState,
+    conn: &mut PgConnection,
+    user: &User,
+    tenant_id: Uuid,
+) -> AppResult<Response> {
+    let now = Utc::now();
+    let access_token = state
+        .jwt
+        .generate_token(user.id, tenant_id, &user.username)
+        .map_err(AppError::from)?;
+
+    let refresh_value = generate_refresh_token();
+    let refresh_hash = hash_refresh_token(&refresh_value);
+    let refresh_expires_at = now + ChronoDuration::days(state.config.refresh_token_expiry_days);
+
+    let new_refresh = NewRefreshToken {
+        id: Uuid::new_v4(),
+        user_id: user.id,
+        token_hash: refresh_hash,
+        issued_at: now.naive_utc(),
+        expires_at: refresh_expires_at.naive_utc(),
+        tenant_id,
+    };
+
+    diesel::insert_into(refresh_tokens::table)
+        .values(&new_refresh)
+        .execute(conn)?;
+
+    let mut response = Json(LoginResponse {
+        access_token,
+        token_type: "Bearer".to_string(),
+        expires_in: state.config.jwt_expiry_minutes * 60,
+    })
+    .into_response();
+
+    response.headers_mut().insert(
+        SET_COOKIE,
+        build_refresh_cookie(state, &refresh_value, refresh_expires_at),
+    );
+
+    Ok(response)
+}
+
+fn hash_refresh_token(token: &str) -> String {
+    let mut hasher = Sha256::new();
+    hasher.update(token.as_bytes());
+    hex::encode(hasher.finalize())
+}
+
+fn generate_refresh_token() -> String {
+    let mut bytes = [0u8; 32];
+    OsRng.fill_bytes(&mut bytes);
+    hex::encode(bytes)
+}
+
+fn build_refresh_cookie(
+    state: &AppState,
+    token: &str,
+    expires_at: chrono::DateTime<Utc>,
+) -> HeaderValue {
+    let max_age = ChronoDuration::days(state.config.refresh_token_expiry_days).num_seconds();
+
+    let mut parts = vec![format!("{}={}", REFRESH_COOKIE_NAME, token)];
+    parts.push("Path=/".into());
+    parts.push("HttpOnly".into());
+    parts.push("SameSite=Strict".into());
+    parts.push(format!("Max-Age={}", max_age));
+    parts.push(format!("Expires={}", expires_at.to_rfc2822()));
+    if state.config.refresh_cookie_secure {
+        parts.push("Secure".into());
+    }
+    if let Some(domain) = &state.config.refresh_cookie_domain {
+        parts.push(format!("Domain={}", domain));
+    }
+
+    HeaderValue::from_str(&parts.join("; ")).expect("valid refresh cookie")
+}
+
+fn build_clear_refresh_cookie(state: &AppState) -> HeaderValue {
+    let mut parts = vec![format!("{}=", REFRESH_COOKIE_NAME)];
+    parts.push("Path=/".into());
+    parts.push("HttpOnly".into());
+    parts.push("SameSite=Strict".into());
+    parts.push("Max-Age=0".into());
+    parts.push("Expires=Thu, 01 Jan 1970 00:00:00 GMT".into());
+    if state.config.refresh_cookie_secure {
+        parts.push("Secure".into());
+    }
+    if let Some(domain) = &state.config.refresh_cookie_domain {
+        parts.push(format!("Domain={}", domain));
+    }
+
+    HeaderValue::from_str(&parts.join("; ")).expect("valid refresh cookie")
+}

backend/src/routes/correspondents.rs

@@ -0,0 +1,290 @@
+use std::collections::{BTreeMap, HashMap};
+
+use axum::{extract::Path, http::StatusCode, Json};
+use chrono::Utc;
+use diesel::{dsl::count_star, prelude::*, result::DatabaseErrorKind, PgConnection};
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use uuid::Uuid;
+
+use crate::{
+    auth::TenantScopedConn,
+    error::{AppError, AppResult},
+    models::{Correspondent, NewCorrespondent},
+    schema::{correspondents, document_correspondents},
+    utils::{
+        db::{no_content, EnsureEntity, IntoJsonResponse},
+        time::to_iso,
+    },
+};
+
+#[derive(Serialize)]
+pub struct CorrespondentUsage {
+    pub total: i64,
+    #[serde(default, skip_serializing_if = "BTreeMap::is_empty")]
+    pub by_role: BTreeMap<String, i64>,
+}
+
+#[derive(Serialize)]
+pub struct CorrespondentSummary {
+    pub id: Uuid,
+    pub name: String,
+    pub metadata: Value,
+    pub created_at: String,
+    pub updated_at: String,
+    pub usage: CorrespondentUsage,
+}
+
+#[derive(Deserialize)]
+pub struct CreateCorrespondentRequest {
+    pub name: String,
+    #[serde(default)]
+    pub metadata: Option<Value>,
+}
+
+#[derive(Deserialize)]
+pub struct UpdateCorrespondentRequest {
+    pub name: Option<String>,
+    pub metadata: Option<Value>,
+}
+
+#[derive(AsChangeset, Default)]
+#[diesel(table_name = correspondents)]
+struct CorrespondentChangeset<'a> {
+    name: Option<&'a str>,
+    metadata: Option<&'a Value>,
+}
+
+pub async fn list_correspondents(
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
+) -> AppResult<Json<Vec<CorrespondentSummary>>> {
+    let correspondents_list: Vec<Correspondent> = correspondents::table
+        .filter(correspondents::tenant_id.eq(tenant_id))
+        .order(correspondents::name.asc())
+        .load(&mut conn)?;
+
+    let usage_rows: Vec<(Uuid, String, i64)> = document_correspondents::table
+        .filter(document_correspondents::tenant_id.eq(tenant_id))
+        .group_by((
+            document_correspondents::correspondent_id,
+            document_correspondents::role,
+        ))
+        .select((
+            document_correspondents::correspondent_id,
+            document_correspondents::role,
+            count_star(),
+        ))
+        .load(&mut conn)?;
+
+    let mut usage_map: HashMap<Uuid, BTreeMap<String, i64>> = HashMap::new();
+    for (correspondent_id, role, count) in usage_rows {
+        usage_map
+            .entry(correspondent_id)
+            .or_default()
+            .insert(role, count);
+    }
+
+    let mut response = Vec::with_capacity(correspondents_list.len());
+    for correspondent in correspondents_list {
+        let role_counts = usage_map.remove(&correspondent.id).unwrap_or_default();
+        response.push(build_summary(correspondent, role_counts));
+    }
+
+    response.into_json()
+}
+
+pub async fn create_correspondent(
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
+    Json(payload): Json<CreateCorrespondentRequest>,
+) -> AppResult<Json<CorrespondentSummary>> {
+    let name = payload.name.trim();
+    if name.is_empty() {
+        return Err(AppError::bad_request("name must not be empty"));
+    }
+
+    let metadata_value = normalize_metadata(payload.metadata);
+    let new_id = Uuid::new_v4();
+    let new_correspondent = NewCorrespondent {
+        id: new_id,
+        name: name.to_string(),
+        metadata: metadata_value,
+        tenant_id,
+    };
+
+    match diesel::insert_into(correspondents::table)
+        .values(&new_correspondent)
+        .execute(&mut conn)
+    {
+        Ok(_) => {}
+        Err(diesel::result::Error::DatabaseError(DatabaseErrorKind::UniqueViolation, _)) => {
+            return Err(AppError::bad_request("correspondent name already exists"));
+        }
+        Err(err) => return Err(AppError::from(err)),
+    }
+
+    let correspondent: Correspondent = correspondents::table
+        .find(new_id)
+        .filter(correspondents::tenant_id.eq(tenant_id))
+        .first(&mut conn)
+        .one()?;
+
+    build_summary(correspondent, BTreeMap::new()).into_json()
+}
+
+pub async fn update_correspondent(
+    Path(correspondent_id): Path<Uuid>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
+    Json(payload): Json<UpdateCorrespondentRequest>,
+) -> AppResult<Json<CorrespondentSummary>> {
+    let existing: Correspondent = correspondents::table
+        .find(correspondent_id)
+        .filter(correspondents::tenant_id.eq(tenant_id))
+        .first(&mut conn)
+        .one()?;
+
+    let mut new_name: Option<String> = None;
+    if let Some(ref candidate) = payload.name {
+        let trimmed = candidate.trim();
+        if trimmed.is_empty() {
+            return Err(AppError::bad_request("name must not be empty"));
+        }
+        if trimmed != existing.name {
+            let duplicate = correspondents::table
+                .filter(correspondents::name.eq(trimmed))
+                .filter(correspondents::id.ne(correspondent_id))
+                .filter(correspondents::tenant_id.eq(tenant_id))
+                .first::<Correspondent>(&mut conn)
+                .optional()?;
+            if duplicate.is_some() {
+                return Err(AppError::bad_request("correspondent name already exists"));
+            }
+            new_name = Some(trimmed.to_string());
+        }
+    }
+
+    let mut new_metadata: Option<Value> = None;
+    if let Some(metadata) = payload.metadata.clone() {
+        let candidate = normalize_metadata(Some(metadata));
+        if candidate != existing.metadata {
+            new_metadata = Some(candidate);
+        }
+    }
+
+    if new_name.is_none() && new_metadata.is_none() {
+        let usage = load_usage_for_correspondent(&mut conn, tenant_id, correspondent_id)?;
+        return build_summary(existing.clone(), usage).into_json();
+    }
+
+    let mut changeset = CorrespondentChangeset::default();
+    if let Some(ref name) = new_name {
+        changeset.name = Some(name.as_str());
+    }
+    if let Some(ref metadata) = new_metadata {
+        changeset.metadata = Some(metadata);
+    }
+
+    let now = Utc::now().naive_utc();
+    diesel::update(
+        correspondents::table
+            .find(correspondent_id)
+            .filter(correspondents::tenant_id.eq(tenant_id)),
+    )
+    .set((&changeset, correspondents::updated_at.eq(now)))
+    .execute(&mut conn)?;
+
+    let updated: Correspondent = correspondents::table
+        .find(correspondent_id)
+        .filter(correspondents::tenant_id.eq(tenant_id))
+        .first(&mut conn)
+        .one()?;
+    let usage = load_usage_for_correspondent(&mut conn, tenant_id, correspondent_id)?;
+    build_summary(updated, usage).into_json()
+}
+
+pub async fn delete_correspondent(
+    Path(correspondent_id): Path<Uuid>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
+) -> AppResult<StatusCode> {
+    let usage: i64 = document_correspondents::table
+        .filter(document_correspondents::tenant_id.eq(tenant_id))
+        .filter(document_correspondents::correspondent_id.eq(correspondent_id))
+        .select(count_star())
+        .first(&mut conn)?;
+
+    if usage > 0 {
+        return Err(AppError::bad_request(
+            "cannot delete correspondent that is still assigned to documents",
+        ));
+    }
+
+    let deleted = diesel::delete(
+        correspondents::table
+            .filter(correspondents::id.eq(correspondent_id))
+            .filter(correspondents::tenant_id.eq(tenant_id)),
+    )
+    .execute(&mut conn)?;
+    if deleted == 0 {
+        return Err(AppError::not_found());
+    }
+    no_content()
+}
+
+fn build_summary(
+    correspondent: Correspondent,
+    role_counts: BTreeMap<String, i64>,
+) -> CorrespondentSummary {
+    let total = role_counts.values().copied().sum();
+    CorrespondentSummary {
+        id: correspondent.id,
+        name: correspondent.name,
+        metadata: correspondent.metadata,
+        created_at: to_iso(correspondent.created_at),
+        updated_at: to_iso(correspondent.updated_at),
+        usage: CorrespondentUsage {
+            total,
+            by_role: role_counts,
+        },
+    }
+}
+
+fn normalize_metadata(input: Option<Value>) -> Value {
+    match input {
+        None | Some(Value::Null) => Value::Object(Default::default()),
+        Some(value) => value,
+    }
+}
+
+fn load_usage_for_correspondent(
+    conn: &mut PgConnection,
+    tenant_id: Uuid,
+    correspondent_id: Uuid,
+) -> AppResult<BTreeMap<String, i64>> {
+    let rows: Vec<(String, i64)> = document_correspondents::table
+        .filter(document_correspondents::correspondent_id.eq(correspondent_id))
+        .filter(document_correspondents::tenant_id.eq(tenant_id))
+        .group_by(document_correspondents::role)
+        .select((document_correspondents::role, count_star()))
+        .load(conn)?;
+
+    let mut map = BTreeMap::new();
+    for (role, count) in rows {
+        map.insert(role, count);
+    }
+    Ok(map)
+}

backend/src/routes/documents/asset_utils.rs

@@ -0,0 +1,120 @@
+use std::path::Path as FsPath;
+
+use uuid::Uuid;
+
+use crate::error::{AppError, AppResult};
+use crate::models::{Document, DocumentAsset, DocumentAssetObject, DocumentVersion};
+use crate::state::AppState;
+use crate::utils::time::to_iso;
+
+use super::{
+    DocumentAssetDetailResponse, DocumentAssetObjectResponse, DocumentAssetResponse,
+    DocumentVersionResponse,
+};
+
+pub fn build_download_path(
+    state: &AppState,
+    document: &Document,
+    user_id: Uuid,
+) -> AppResult<String> {
+    state
+        .jwt
+        .generate_download_token(document.id, user_id, document.tenant_id)
+        .map(|token| format!("/download/{token}"))
+        .map_err(|err| AppError::internal(format!("failed to generate download token: {err}")))
+}
+
+pub fn to_version_response(
+    version: DocumentVersion,
+    include_operations_summary: bool,
+) -> DocumentVersionResponse {
+    DocumentVersionResponse {
+        id: version.id,
+        version_number: version.version_number,
+        s3_key: version.s3_key,
+        size_bytes: version.size_bytes,
+        checksum: version.checksum,
+        created_at: to_iso(version.created_at),
+        metadata: version.metadata,
+        operations_summary: if include_operations_summary {
+            Some(version.operations_summary)
+        } else {
+            None
+        },
+    }
+}
+
+pub fn to_asset_summary(asset: DocumentAsset) -> DocumentAssetResponse {
+    DocumentAssetResponse {
+        id: asset.id,
+        asset_type: asset.asset_type,
+        mime_type: asset.mime_type,
+        metadata: asset.metadata,
+        cardinality: asset.cardinality,
+    }
+}
+
+pub fn to_asset_detail_response(
+    asset: DocumentAsset,
+    objects: Vec<DocumentAssetObjectResponse>,
+) -> DocumentAssetDetailResponse {
+    DocumentAssetDetailResponse {
+        id: asset.id,
+        asset_type: asset.asset_type,
+        mime_type: asset.mime_type,
+        metadata: asset.metadata,
+        created_at: to_iso(asset.created_at),
+        cardinality: asset.cardinality,
+        objects,
+    }
+}
+
+pub fn to_asset_object_response(
+    object: DocumentAssetObject,
+    url: Option<String>,
+    expires_at: Option<i64>,
+) -> DocumentAssetObjectResponse {
+    DocumentAssetObjectResponse {
+        id: object.id,
+        ordinal: object.ordinal,
+        metadata: object.metadata,
+        url,
+        expires_at,
+    }
+}
+
+pub fn derive_document_title(original: &str) -> String {
+    let trimmed = original.trim();
+    if trimmed.is_empty() {
+        return "Document".to_string();
+    }
+
+    let stem = FsPath::new(trimmed)
+        .file_stem()
+        .and_then(|s| s.to_str())
+        .map(|s| s.trim())
+        .filter(|s| !s.is_empty())
+        .map(|s| s.to_string());
+
+    stem.unwrap_or_else(|| trimmed.to_string())
+}
+
+pub fn filename_with_retained_extension(title: &str, current_filename: &str) -> String {
+    let extension = FsPath::new(current_filename)
+        .extension()
+        .and_then(|ext| ext.to_str());
+
+    if let Some(ext) = extension {
+        if title
+            .rsplit_once('.')
+            .map(|(_, existing_ext)| existing_ext.eq_ignore_ascii_case(ext))
+            .unwrap_or(false)
+        {
+            title.to_string()
+        } else {
+            format!("{title}.{ext}")
+        }
+    } else {
+        title.to_string()
+    }
+}

backend/src/routes/documents/correspondent_utils.rs

@@ -0,0 +1,61 @@
+use std::collections::HashSet;
+
+use uuid::Uuid;
+
+use crate::error::{AppError, AppResult};
+
+use super::CorrespondentAssignmentInput;
+
+pub const CORRESPONDENT_ROLES: &[&str] = &["sender", "receiver", "other"];
+
+pub fn normalize_role(value: &str) -> String {
+    value.trim().to_lowercase()
+}
+
+pub fn is_valid_correspondent_role(role: &str) -> bool {
+    CORRESPONDENT_ROLES.iter().any(|allowed| *allowed == role)
+}
+
+pub fn normalize_correspondent_assignments(
+    assignments: &[CorrespondentAssignmentInput],
+) -> AppResult<(Vec<(Uuid, String)>, Vec<Uuid>, Vec<String>)> {
+    let mut unique_pairs: HashSet<(Uuid, String)> = HashSet::new();
+    let mut normalized_pairs: Vec<(Uuid, String)> = Vec::new();
+    let mut role_set: HashSet<String> = HashSet::new();
+    let mut correspondent_ids: HashSet<Uuid> = HashSet::new();
+
+    for assignment in assignments {
+        let role = normalize_role(&assignment.role);
+        if role.is_empty() {
+            return Err(AppError::bad_request("role must not be empty"));
+        }
+        if !is_valid_correspondent_role(&role) {
+            return Err(AppError::bad_request(format!(
+                "invalid correspondent role '{role}'. Allowed roles: {}",
+                CORRESPONDENT_ROLES.join(", ")
+            )));
+        }
+
+        if !unique_pairs.insert((assignment.correspondent_id, role.clone())) {
+            continue;
+        }
+
+        normalized_pairs.push((assignment.correspondent_id, role.clone()));
+        role_set.insert(role);
+        correspondent_ids.insert(assignment.correspondent_id);
+    }
+
+    if normalized_pairs.is_empty() {
+        return Err(AppError::bad_request(
+            "assignments must contain at least one unique correspondent/role pair",
+        ));
+    }
+
+    let mut correspondents_vec: Vec<Uuid> = correspondent_ids.into_iter().collect();
+    correspondents_vec.sort();
+
+    let mut roles_vec: Vec<String> = role_set.into_iter().collect();
+    roles_vec.sort();
+
+    Ok((normalized_pairs, correspondents_vec, roles_vec))
+}

backend/src/routes/documents/search_utils.rs

@@ -0,0 +1,91 @@
+use serde_json::Value;
+use uuid::Uuid;
+
+pub fn build_quickwit_query(input: &str) -> Option<String> {
+    let tokens: Vec<String> = input
+        .split_whitespace()
+        .filter(|token| !token.is_empty())
+        .map(|token| {
+            let normalized = token.to_lowercase();
+            escape_quickwit_token(&normalized)
+        })
+        .collect();
+
+    if tokens.is_empty() {
+        return None;
+    }
+
+    let parts: Vec<String> = tokens
+        .into_iter()
+        .map(|token| format!("(title:{token} OR text:{token})"))
+        .collect();
+
+    Some(parts.join(" AND "))
+}
+
+pub fn escape_quickwit_token(token: &str) -> String {
+    let mut escaped = String::with_capacity(token.len());
+    for ch in token.chars() {
+        match ch {
+            '+' | '-' | '&' | '|' | '!' | '(' | ')' | '{' | '}' | '[' | ']' | '^' | '"' | '~'
+            | '*' | '?' | ':' | '\\' | '/' => {
+                escaped.push('\\');
+                escaped.push(ch);
+            }
+            _ => escaped.push(ch),
+        }
+    }
+    escaped
+}
+
+pub fn extract_document_id(hit: &Value) -> Option<Uuid> {
+    for key in ["_source", "source", "fields", "stored_fields"] {
+        if let Some(value) = hit.get(key) {
+            if let Some(uuid) = extract_uuid_from_value(value) {
+                return Some(uuid);
+            }
+        }
+    }
+
+    if let Some(value) = hit.get("document_id") {
+        if let Some(uuid) = extract_uuid_from_value(value) {
+            return Some(uuid);
+        }
+    }
+
+    None
+}
+
+pub fn extract_uuid_from_value(value: &Value) -> Option<Uuid> {
+    if let Some(obj) = value.as_object() {
+        if let Some(inner) = obj.get("document_id") {
+            return parse_uuid_value(inner);
+        }
+    }
+
+    if let Some(arr) = value.as_array() {
+        for item in arr {
+            if let Some(uuid) = extract_uuid_from_value(item) {
+                return Some(uuid);
+            }
+        }
+    }
+
+    parse_uuid_value(value)
+}
+
+pub fn parse_uuid_value(value: &Value) -> Option<Uuid> {
+    if let Some(s) = value.as_str() {
+        return Uuid::parse_str(s).ok();
+    }
+
+    if let Some(arr) = value.as_array() {
+        for item in arr {
+            if let Some(uuid) = parse_uuid_value(item) {
+                return Some(uuid);
+            }
+        }
+    }
+
+    None
+}

backend/src/routes/folders.rs

@@ -4,17 +4,24 @@ use axum::{
 };
 use diesel::{dsl::exists, prelude::*, PgConnection};
 use serde::{Deserialize, Serialize};
-use std::collections::HashSet;
+use serde_json::Value;
 use uuid::Uuid;
 
-use crate::error::{AppError, AppResult};
 use crate::models::{Document, Folder, NewFolder};
-use crate::schema::{document_tags, documents, folders};
+use crate::schema::{documents, folders};
 use crate::state::AppState;
+use crate::{
+    auth::TenantScopedConn,
+    error::{AppError, AppResult},
+};
 
 use super::documents::{
-    load_primary_thumbnails, load_tags_for_documents, to_document_response, to_iso,
+    load_correspondents_for_documents, load_primary_assets, load_tags_for_documents,
-    DocumentResponse,
+    to_document_response, DocumentResponse,
+};
+use crate::utils::{
+    json::{classify_nullable, NullableValue},
+    time::to_iso,
 };
 
 #[derive(Deserialize)]
@@ -29,11 +36,6 @@ pub struct EnsureFolderPathRequest {
     pub segments: Vec<String>,
 }
 
-#[derive(Deserialize)]
-pub struct UpdateFolderRequest {
-    pub parent_id: Option<Uuid>,
-}
-
 #[derive(Serialize)]
 pub struct FolderResponse {
     pub folder: FolderInfo,
@@ -47,9 +49,13 @@ pub struct FolderContentsResponse {
 }
 
 #[derive(Deserialize)]
-pub struct DocumentSearchQuery {
+pub struct FolderContentsQuery {
-    pub query: Option<String>,
+    #[serde(default = "default_include_documents")]
-    pub tags: Option<String>,
+    pub include_documents: bool,
+}
+
+const fn default_include_documents() -> bool {
+    true
 }
 
 #[derive(Serialize)]
@@ -57,21 +63,40 @@ pub struct FolderInfo {
     pub id: Uuid,
     pub name: String,
     pub parent_id: Option<Uuid>,
-    pub path_cache: Option<String>,
     pub created_at: String,
     pub updated_at: String,
 }
 
+pub async fn get_folder(
+    Path(folder_id): Path<Uuid>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
+) -> AppResult<Json<FolderResponse>> {
+    let folder: Folder = folders::table
+        .find(folder_id)
+        .filter(folders::tenant_id.eq(tenant_id))
+        .first(&mut conn)?;
+
+    Ok(Json(FolderResponse {
+        folder: folder_to_info(folder),
+    }))
+}
+
 pub async fn ensure_folder_path(
-    State(state): State<AppState>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
     Json(payload): Json<EnsureFolderPathRequest>,
 ) -> AppResult<Json<FolderResponse>> {
     if payload.segments.is_empty() {
         return Err(AppError::bad_request("segments must not be empty"));
     }
 
-    let mut conn = state.db()?;
-
     let target_folder = conn.transaction::<Folder, AppError, _>(|conn| {
         let mut current_parent = payload.parent_id;
         let mut last_folder: Option<Folder> = None;
@@ -86,12 +111,14 @@ pub async fn ensure_folder_path(
                 folders::table
                     .filter(folders::parent_id.eq(Some(parent_id)))
                     .filter(folders::name.eq(name))
+                    .filter(folders::tenant_id.eq(tenant_id))
                     .first(conn)
                     .optional()?
             } else {
                 folders::table
                     .filter(folders::parent_id.is_null())
                     .filter(folders::name.eq(name))
+                    .filter(folders::tenant_id.eq(tenant_id))
                     .first(conn)
                     .optional()?
             };
@@ -99,12 +126,11 @@ pub async fn ensure_folder_path(
             let folder = if let Some(folder) = existing {
                 folder
             } else {
-                let path_cache = build_path_cache(conn, current_parent, name)?;
                 let new_folder = NewFolder {
                     id: Uuid::new_v4(),
                     name: name.to_string(),
                     parent_id: current_parent,
-                    path_cache,
+                    tenant_id,
                 };
 
                 diesel::insert_into(folders::table)
@@ -127,21 +153,22 @@ pub async fn ensure_folder_path(
 }
 
 pub async fn create_folder(
-    State(state): State<AppState>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
     Json(payload): Json<CreateFolderRequest>,
 ) -> AppResult<Json<FolderResponse>> {
     if payload.name.trim().is_empty() {
         return Err(AppError::bad_request("name must not be empty"));
     }
 
-    let mut conn = state.db()?;
-    let path_cache = build_path_cache(&mut conn, payload.parent_id, &payload.name)?;
-
     let new_folder = NewFolder {
         id: Uuid::new_v4(),
         name: payload.name.trim().to_string(),
         parent_id: payload.parent_id,
-        path_cache,
+        tenant_id,
     };
 
     diesel::insert_into(folders::table)
@@ -157,9 +184,14 @@ pub async fn create_folder(
 pub async fn list_folder_contents(
     State(state): State<AppState>,
     Path(folder_identifier): Path<String>,
+    Query(query): Query<FolderContentsQuery>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        user_id,
+        ..
+    }: TenantScopedConn,
 ) -> AppResult<Json<FolderContentsResponse>> {
-    let mut conn = state.db()?;
-
     let folder_id = if folder_identifier.eq_ignore_ascii_case("root") {
         None
     } else {
@@ -171,7 +203,10 @@ pub async fn list_folder_contents(
 
     let folder = match folder_id {
         Some(id) => Some(folder_to_info(
-            folders::table.find(id).first::<Folder>(&mut conn)?,
+            folders::table
+                .find(id)
+                .filter(folders::tenant_id.eq(tenant_id))
+                .first::<Folder>(&mut conn)?,
         )),
         None => None,
     };
@@ -179,18 +214,22 @@ pub async fn list_folder_contents(
     let child_folders: Vec<Folder> = if let Some(parent_id) = folder_id {
         folders::table
             .filter(folders::parent_id.eq(parent_id))
+            .filter(folders::tenant_id.eq(tenant_id))
             .order(folders::name.asc())
             .load(&mut conn)?
     } else {
         folders::table
             .filter(folders::parent_id.is_null())
+            .filter(folders::tenant_id.eq(tenant_id))
             .order(folders::name.asc())
             .load(&mut conn)?
     };
     let subfolders = child_folders.into_iter().map(folder_to_info).collect();
 
+    let documents = if query.include_documents {
         let docs_query = documents::table
             .filter(documents::deleted_at.is_null())
+            .filter(documents::tenant_id.eq(tenant_id))
             .order(documents::uploaded_at.desc());
 
         let docs: Vec<Document> = if let Some(current_folder) = folder_id {
@@ -205,18 +244,30 @@ pub async fn list_folder_contents(
 
         let doc_ids: Vec<Uuid> = docs.iter().map(|doc| doc.id).collect();
         let tags_map = load_tags_for_documents(&mut conn, &doc_ids)?;
+        let mut correspondents_map = load_correspondents_for_documents(&mut conn, &doc_ids)?;
         drop(conn);
 
-    let thumbnails = load_primary_thumbnails(&state, &docs).await?;
+        let primary_versions = load_primary_assets(&state, tenant_id, &docs).await?;
 
-    let documents = docs
+        let mut documents = Vec::with_capacity(doc_ids.len());
-        .into_iter()
+        for doc in docs {
-        .map(|doc| {
             let tags = tags_map.get(&doc.id).cloned();
-            let thumbnail = thumbnails.get(&doc.id).cloned();
+            let correspondents = correspondents_map.remove(&doc.id).unwrap_or_default();
-            to_document_response(doc, tags, thumbnail)
+            let current_version = primary_versions.get(&doc.id).cloned();
-        })
+            documents.push(to_document_response(
-        .collect();
+                &state,
+                user_id,
+                doc,
+                tags,
+                correspondents,
+                current_version,
+            )?);
+        }
+
+        documents
+    } else {
+        Vec::new()
+    };
 
     Ok(Json(FolderContentsResponse {
         folder,
@@ -225,117 +276,24 @@ pub async fn list_folder_contents(
     }))
 }
 
-pub async fn search_documents(
-    State(state): State<AppState>,
-    Path(folder_identifier): Path<String>,
-    Query(params): Query<DocumentSearchQuery>,
-) -> AppResult<Json<Vec<DocumentResponse>>> {
-    let mut conn = state.db()?;
-
-    let folder_id = if folder_identifier.eq_ignore_ascii_case("root") {
-        None
-    } else {
-        Some(
-            Uuid::parse_str(&folder_identifier)
-                .map_err(|_| AppError::bad_request("folder identifier must be 'root' or a UUID"))?,
-        )
-    };
-
-    let mut docs_query = documents::table
-        .filter(documents::deleted_at.is_null())
-        .into_boxed();
-
-    if let Some(folder_id) = folder_id {
-        let descendant_ids = gather_descendant_folder_ids(&mut conn, folder_id)?;
-        docs_query = docs_query.filter(documents::folder_id.eq_any(descendant_ids));
-    }
-
-    if let Some(query) = params
-        .query
-        .as_ref()
-        .map(|s| s.trim())
-        .filter(|s| !s.is_empty())
-    {
-        let pattern = format!("%{}%", query);
-        docs_query = docs_query.filter(documents::original_name.ilike(pattern));
-    }
-
-    if let Some(tags_param) = params
-        .tags
-        .as_ref()
-        .map(|s| s.trim())
-        .filter(|s| !s.is_empty())
-    {
-        let tag_ids: Result<Vec<Uuid>, _> = tags_param
-            .split(',')
-            .map(|s| Uuid::parse_str(s.trim()))
-            .collect();
-
-        if let Ok(ids) = tag_ids {
-            if !ids.is_empty() {
-                let mut doc_id_set: Option<HashSet<Uuid>> = None;
-                for tag_id in &ids {
-                    let docs_for_tag: Vec<Uuid> = document_tags::table
-                        .filter(document_tags::tag_id.eq(*tag_id))
-                        .select(document_tags::document_id)
-                        .load(&mut conn)?;
-                    let docs_set: HashSet<Uuid> = docs_for_tag.into_iter().collect();
-                    doc_id_set = Some(match doc_id_set {
-                        Some(existing) => existing.intersection(&docs_set).cloned().collect(),
-                        None => docs_set,
-                    });
-
-                    if let Some(ref set) = doc_id_set {
-                        if set.is_empty() {
-                            break;
-                        }
-                    }
-                }
-
-                let matching_doc_ids: Vec<Uuid> =
-                    doc_id_set.unwrap_or_default().into_iter().collect();
-
-                if matching_doc_ids.is_empty() {
-                    return Ok(Json(vec![]));
-                }
-
-                docs_query = docs_query.filter(documents::id.eq_any(matching_doc_ids));
-            }
-        }
-    }
-
-    let docs: Vec<Document> = docs_query
-        .order(documents::uploaded_at.desc())
-        .load(&mut conn)?;
-
-    let doc_ids: Vec<Uuid> = docs.iter().map(|doc| doc.id).collect();
-    let tags_map = load_tags_for_documents(&mut conn, &doc_ids)?;
-    drop(conn);
-
-    let thumbnails = load_primary_thumbnails(&state, &docs).await?;
-    let response = docs
-        .into_iter()
-        .map(|doc| {
-            let tags = tags_map.get(&doc.id).cloned();
-            let thumbnail = thumbnails.get(&doc.id).cloned();
-            to_document_response(doc, tags, thumbnail)
-        })
-        .collect();
-
-    Ok(Json(response))
-}
-
 pub async fn delete_folder(
-    State(state): State<AppState>,
     Path(folder_id): Path<Uuid>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
 ) -> AppResult<StatusCode> {
-    let mut conn = state.db()?;
-
     conn.transaction::<_, AppError, _>(|conn| {
-        folders::table.find(folder_id).first::<Folder>(conn)?;
+        folders::table
+            .find(folder_id)
+            .filter(folders::tenant_id.eq(tenant_id))
+            .first::<Folder>(conn)?;
 
         let has_child_folders: bool = diesel::select(exists(
-            folders::table.filter(folders::parent_id.eq(Some(folder_id))),
+            folders::table
+                .filter(folders::parent_id.eq(Some(folder_id)))
+                .filter(folders::tenant_id.eq(tenant_id)),
         ))
         .get_result(conn)?;
 
@@ -348,6 +306,7 @@ pub async fn delete_folder(
         let has_documents: bool = diesel::select(exists(
             documents::table
                 .filter(documents::folder_id.eq(Some(folder_id)))
+                .filter(documents::tenant_id.eq(tenant_id))
                 .filter(documents::deleted_at.is_null()),
         ))
         .get_result(conn)?;
@@ -358,7 +317,12 @@ pub async fn delete_folder(
             ));
         }
 
-        diesel::delete(folders::table.find(folder_id)).execute(conn)?;
+        diesel::delete(
+            folders::table
+                .filter(folders::id.eq(folder_id))
+                .filter(folders::tenant_id.eq(tenant_id)),
+        )
+        .execute(conn)?;
 
         Ok(())
     })?;
@@ -366,51 +330,106 @@ pub async fn delete_folder(
     Ok(StatusCode::NO_CONTENT)
 }
 
-pub async fn update_folder_parent(
+pub async fn update_folder(
-    State(state): State<AppState>,
     Path(folder_id): Path<Uuid>,
-    Json(payload): Json<UpdateFolderRequest>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
+    Json(body): Json<Value>,
 ) -> AppResult<StatusCode> {
-    if payload.parent_id == Some(folder_id) {
+    if !body.is_object() {
+        return Err(AppError::bad_request("request body must be a JSON object"));
+    }
+
+    let parent_class = classify_nullable(body.get("parent_id")).map_err(AppError::bad_request)?;
+    let name_class = classify_nullable(body.get("name")).map_err(AppError::bad_request)?;
+
+    conn.transaction::<(), AppError, _>(|conn| {
+        let folder: Folder = folders::table
+            .find(folder_id)
+            .filter(folders::tenant_id.eq(tenant_id))
+            .first(conn)?;
+
+        let mut next_parent = folder.parent_id;
+        let mut parent_changed = false;
+        match parent_class {
+            NullableValue::Omitted => {}
+            NullableValue::Null => {
+                if folder.parent_id.is_some() {
+                    parent_changed = true;
+                }
+                next_parent = None;
+            }
+            NullableValue::String(value) => {
+                let trimmed = value.trim();
+                if trimmed.is_empty() {
+                    return Err(AppError::bad_request("parent_id must not be empty"));
+                }
+                let parent_id = Uuid::parse_str(trimmed)
+                    .map_err(|_| AppError::bad_request("parent_id must be a valid UUID or null"))?;
+                if parent_id == folder_id {
                     return Err(AppError::bad_request("folder cannot be its own parent"));
                 }
 
-    let mut conn = state.db()?;
+                let _parent: Folder = folders::table
+                    .find(parent_id)
+                    .filter(folders::tenant_id.eq(tenant_id))
+                    .first(conn)?;
 
-    conn.transaction::<(), AppError, _>(|conn| {
+                if folder.parent_id != Some(parent_id) {
-        let folder: Folder = folders::table.find(folder_id).first(conn)?;
+                    let descendant_ids = gather_descendant_folder_ids(conn, tenant_id, folder_id)?;
-        let current_parent = folder.parent_id;
-        let next_parent = payload.parent_id;
-
-        if current_parent == next_parent {
-            return Ok(());
-        }
-
-        if let Some(parent_id) = next_parent {
-            let _parent: Folder = folders::table.find(parent_id).first(conn)?;
-        }
-
-        if let Some(parent_id) = next_parent {
-            let descendant_ids = gather_descendant_folder_ids(conn, folder_id)?;
                     if descendant_ids.contains(&parent_id) {
                         return Err(AppError::bad_request(
                             "cannot move folder into itself or a descendant",
                         ));
                     }
+                    parent_changed = true;
+                }
+
+                next_parent = Some(parent_id);
+            }
+        }
+
+        let mut new_name = folder.name.clone();
+        let mut name_changed = false;
+        match name_class {
+            NullableValue::Omitted => {}
+            NullableValue::Null => {
+                return Err(AppError::bad_request("name cannot be null"));
+            }
+            NullableValue::String(value) => {
+                let trimmed = value.trim();
+                if trimmed.is_empty() {
+                    return Err(AppError::bad_request("name must not be empty"));
+                }
+
+                if trimmed != folder.name {
+                    new_name = trimmed.to_string();
+                    name_changed = true;
+                }
+            }
+        }
+
+        if !parent_changed && !name_changed {
+            return Ok(());
         }
 
         let conflict = if let Some(parent_id) = next_parent {
             folders::table
                 .filter(folders::parent_id.eq(Some(parent_id)))
-                .filter(folders::name.eq(&folder.name))
+                .filter(folders::name.eq(&new_name))
                 .filter(folders::id.ne(folder_id))
+                .filter(folders::tenant_id.eq(tenant_id))
                 .first::<Folder>(conn)
                 .optional()?
         } else {
             folders::table
                 .filter(folders::parent_id.is_null())
-                .filter(folders::name.eq(&folder.name))
+                .filter(folders::name.eq(&new_name))
                 .filter(folders::id.ne(folder_id))
+                .filter(folders::tenant_id.eq(tenant_id))
                 .first::<Folder>(conn)
                 .optional()?
         };
@@ -421,60 +440,45 @@ pub async fn update_folder_parent(
             ));
         }
 
-        let new_path = build_path_cache(conn, next_parent, &folder.name)?;
+        diesel::update(
-
+            folders::table
-        diesel::update(folders::table.find(folder_id))
+                .find(folder_id)
+                .filter(folders::tenant_id.eq(tenant_id)),
+        )
         .set((
             folders::parent_id.eq(next_parent),
-                folders::path_cache.eq(new_path),
+            folders::name.eq(&new_name),
         ))
         .execute(conn)?;
 
-        refresh_descendant_paths(conn, folder_id)?;
-
         Ok(())
     })?;
 
     Ok(StatusCode::NO_CONTENT)
 }
 
-fn build_path_cache(
-    conn: &mut PgConnection,
-    parent_id: Option<Uuid>,
-    name: &str,
-) -> AppResult<Option<String>> {
-    let path = if let Some(parent_id) = parent_id {
-        let parent: Folder = folders::table.find(parent_id).first(conn)?;
-        let base = parent
-            .path_cache
-            .unwrap_or_else(|| "/".to_string())
-            .trim_end_matches('/')
-            .to_string();
-        format!("{}/{}", base, name)
-    } else {
-        format!("/{}", name)
-    };
-    Ok(Some(path))
-}
-
 fn folder_to_info(folder: Folder) -> FolderInfo {
     FolderInfo {
         id: folder.id,
         name: folder.name,
         parent_id: folder.parent_id,
-        path_cache: folder.path_cache,
         created_at: to_iso(folder.created_at),
         updated_at: to_iso(folder.updated_at),
     }
 }
 
-fn gather_descendant_folder_ids(conn: &mut PgConnection, folder_id: Uuid) -> AppResult<Vec<Uuid>> {
+pub(super) fn gather_descendant_folder_ids(
+    conn: &mut PgConnection,
+    tenant_id: Uuid,
+    folder_id: Uuid,
+) -> AppResult<Vec<Uuid>> {
     let mut ids = vec![folder_id];
     let mut queue = vec![folder_id];
 
     while let Some(current) = queue.pop() {
         let child_ids: Vec<Uuid> = folders::table
             .filter(folders::parent_id.eq(Some(current)))
+            .filter(folders::tenant_id.eq(tenant_id))
             .select(folders::id)
             .load(conn)?;
         queue.extend(child_ids.iter().copied());
@@ -483,19 +487,3 @@ fn gather_descendant_folder_ids(conn: &mut PgConnection, folder_id: Uuid) -> App
 
     Ok(ids)
 }
-
-fn refresh_descendant_paths(conn: &mut PgConnection, parent_id: Uuid) -> AppResult<()> {
-    let children: Vec<Folder> = folders::table
-        .filter(folders::parent_id.eq(Some(parent_id)))
-        .load(conn)?;
-
-    for child in children {
-        let path_cache = build_path_cache(conn, Some(parent_id), &child.name)?;
-        diesel::update(folders::table.find(child.id))
-            .set(folders::path_cache.eq(path_cache))
-            .execute(conn)?;
-        refresh_descendant_paths(conn, child.id)?;
-    }
-
-    Ok(())
-}

backend/src/routes/mod.rs

@@ -1,45 +1,82 @@
+use axum::http::HeaderValue;
 use axum::{
     extract::DefaultBodyLimit,
     middleware,
+    response::Json,
     routing::{delete, get, patch, post},
     Router,
 };
-use tower_http::cors::{Any, CorsLayer};
+use std::sync::Arc;
+use tower_http::cors::{AllowOrigin, CorsLayer};
+use utoipa::OpenApi;
 
-use crate::{auth::AuthenticatedUser, state::AppState};
+use crate::{auth::AuthenticatedUser, openapi::ApiDoc, state::AppState};
 
 pub mod auth;
+pub mod correspondents;
 pub mod documents;
 pub mod folders;
 pub mod health;
 pub mod tags;
+pub mod webdav;
 
 pub fn create_router(state: AppState) -> Router<()> {
-    let cors = CorsLayer::new()
+    let cors = if let Some(origins) = state.config.cors_allowed_origin.as_ref() {
-        .allow_origin(Any)
+        let headers: Vec<HeaderValue> = origins
-        .allow_methods(Any)
+            .split(',')
-        .allow_headers(Any);
+            .filter_map(|value| {
+                let trimmed = value.trim();
+                (!trimmed.is_empty()).then(|| {
+                    trimmed
+                        .parse::<HeaderValue>()
+                        .expect("invalid CORS allowed origin")
+                })
+            })
+            .collect();
+
+        let allow_origin = AllowOrigin::list(headers);
+
+        CorsLayer::new()
+            .allow_origin(allow_origin)
+            .allow_methods(tower_http::cors::AllowMethods::mirror_request())
+            .allow_headers(tower_http::cors::AllowHeaders::mirror_request())
+            .allow_credentials(true)
+    } else {
+        CorsLayer::new()
+            .allow_origin(AllowOrigin::mirror_request())
+            .allow_methods(tower_http::cors::AllowMethods::mirror_request())
+            .allow_headers(tower_http::cors::AllowHeaders::mirror_request())
+            .allow_credentials(true)
+    };
 
     let auth_routes = Router::new()
         .route("/login", post(auth::login))
+        .route("/refresh", post(auth::refresh))
         .route("/logout", post(auth::logout))
+        .route("/select-tenant", post(auth::select_tenant))
         .route("/me", get(auth::me));
 
     let documents_routes = Router::new()
+        .route("/check", get(documents::check_document))
         .route(
             "/",
             get(documents::list_documents).post(documents::upload_document),
         )
-        .route("/reanalyze", post(documents::reanalyze_all_documents))
         .route("/bulk/move", post(documents::bulk_move_documents))
         .route("/bulk/tags", post(documents::bulk_update_tags))
+        .route(
+            "/bulk/correspondents",
+            post(documents::bulk_assign_correspondents),
+        )
         .route(
             "/bulk/reanalyze",
             post(documents::reanalyze_selected_documents),
         )
         .route(
             "/:id",
-            get(documents::get_document).delete(documents::delete_document),
+            get(documents::get_document)
+                .delete(documents::delete_document)
+                .patch(documents::update_document),
         )
         .route("/:id/download", get(documents::download_document))
         .route(
@@ -48,31 +85,71 @@ pub fn create_router(state: AppState) -> Router<()> {
         )
         .route("/:id/folder", patch(documents::move_document))
         .route("/:id/tags", post(documents::assign_tags))
-        .route("/:id/tags/:tag_id", delete(documents::remove_tag));
+        .route("/:id/tags/:tag_id", delete(documents::remove_tag))
+        .route(
+            "/:id/correspondents",
+            post(documents::assign_correspondents),
+        )
+        .route(
+            "/:id/correspondents/:correspondent_id",
+            delete(documents::remove_correspondent),
+        );
+
+    let download_routes =
+        Router::new().route("/download/:token", get(documents::download_with_token));
 
     let folders_routes = Router::new()
         .route("/", post(folders::create_folder))
         .route("/path", post(folders::ensure_folder_path))
+        .route("/:id", get(folders::get_folder))
+        .route("/:id", delete(folders::delete_folder))
+        .route("/:id", patch(folders::update_folder))
+        .route("/:id/contents", get(folders::list_folder_contents));
+
+    let tags_routes = Router::new()
+        .route("/", get(tags::list_tags).post(tags::create_tag))
+        .route("/:id", patch(tags::update_tag).delete(tags::delete_tag));
+
+    let correspondents_routes = Router::new()
+        .route(
+            "/",
+            get(correspondents::list_correspondents).post(correspondents::create_correspondent),
+        )
         .route(
             "/:id",
-            delete(folders::delete_folder).patch(folders::update_folder_parent),
+            patch(correspondents::update_correspondent)
-        )
+                .delete(correspondents::delete_correspondent),
-        .route("/:id/contents", get(folders::list_folder_contents))
+        );
-        .route("/:id/documents", get(folders::search_documents));
-
-    let tags_routes = Router::new().route("/", get(tags::list_tags).post(tags::create_tag));
 
     let protected_state = state.clone();
+    let assets_routes = Router::new().route("/:asset_id", get(documents::get_document_asset));
+
     let protected_routes = Router::new()
         .nest("/api/documents", documents_routes)
         .nest("/api/folders", folders_routes)
         .nest("/api/tags", tags_routes)
-        .route("/api/health", get(health::health_check))
+        .nest("/api/correspondents", correspondents_routes)
+        .nest("/api/assets", assets_routes)
         .layer(middleware::from_extractor_with_state::<AuthenticatedUser, _>(protected_state));
 
+    let openapi_arc = Arc::new(ApiDoc::openapi());
+    let docs_route = Router::new().route(
+        "/api/docs/openapi.json",
+        get({
+            let spec = openapi_arc.clone();
+            move || {
+                let spec = spec.clone();
+                async move { Json((*spec).clone()) }
+            }
+        }),
+    );
+
     Router::new()
-        .nest("/api/auth", auth_routes)
+        .merge(download_routes)
         .merge(protected_routes)
+        .merge(docs_route)
+        .nest("/api/auth", auth_routes)
+        .route("/api/health", get(health::health_check))
         .with_state(state)
         .layer(cors)
         .layer(DefaultBodyLimit::max(1024 * 1024 * 512))

backend/src/routes/tags.rs

@@ -1,14 +1,16 @@
-use axum::{extract::State, Json};
+use crate::utils::json::{classify_nullable, NullableValue};
-use diesel::prelude::*;
+use axum::{extract::Path, http::StatusCode, Json};
-use serde::Deserialize;
+use diesel::{dsl::count_star, prelude::*};
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use std::collections::HashMap;
 use uuid::Uuid;
 
+use crate::auth::TenantScopedConn;
 use crate::error::{AppError, AppResult};
 use crate::models::{NewTag, Tag};
-use crate::schema::tags;
+use crate::schema::{document_tags, tags};
-use crate::state::AppState;
+use crate::utils::db::{no_content, EnsureEntity, IntoJsonResponse};
-
-use super::documents::TagResponse;
 
 #[derive(Deserialize)]
 pub struct CreateTagRequest {
@@ -16,26 +18,71 @@ pub struct CreateTagRequest {
     pub color: Option<String>,
 }
 
-pub async fn list_tags(State(state): State<AppState>) -> AppResult<Json<Vec<TagResponse>>> {
+#[derive(AsChangeset, Default)]
-    let mut conn = state.db()?;
+#[diesel(table_name = tags)]
-    let tag_list: Vec<Tag> = tags::table.order(tags::label.asc()).load(&mut conn)?;
+struct UpdateTagChangeset<'a> {
-    let response = tag_list.into_iter().map(TagResponse::from).collect();
+    label: Option<&'a str>,
-    Ok(Json(response))
+    color: Option<Option<&'a str>>,
+}
+
+#[derive(Serialize)]
+pub struct TagCatalogEntry {
+    pub id: Uuid,
+    pub label: String,
+    pub color: Option<String>,
+    pub usage_count: i64,
+}
+
+pub async fn list_tags(
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
+) -> AppResult<Json<Vec<TagCatalogEntry>>> {
+    let tag_list: Vec<Tag> = tags::table
+        .filter(tags::tenant_id.eq(tenant_id))
+        .order(tags::label.asc())
+        .load(&mut conn)?;
+
+    let usage_rows: Vec<(Uuid, i64)> = document_tags::table
+        .filter(document_tags::tenant_id.eq(tenant_id))
+        .group_by(document_tags::tag_id)
+        .select((document_tags::tag_id, count_star()))
+        .load(&mut conn)?;
+
+    let usage_map: HashMap<Uuid, i64> = usage_rows.into_iter().collect();
+
+    let response: Vec<TagCatalogEntry> = tag_list
+        .into_iter()
+        .map(|tag| TagCatalogEntry {
+            id: tag.id,
+            label: tag.label,
+            color: tag.color,
+            usage_count: *usage_map.get(&tag.id).unwrap_or(&0),
+        })
+        .collect();
+
+    response.into_json()
 }
 
 pub async fn create_tag(
-    State(state): State<AppState>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
     Json(payload): Json<CreateTagRequest>,
-) -> AppResult<Json<TagResponse>> {
+) -> AppResult<Json<TagCatalogEntry>> {
     if payload.label.trim().is_empty() {
         return Err(AppError::bad_request("label must not be empty"));
     }
 
-    let mut conn = state.db()?;
     let new_tag = NewTag {
         id: Uuid::new_v4(),
         label: payload.label.trim().to_string(),
         color: payload.color,
+        tenant_id,
     };
 
     match diesel::insert_into(tags::table)
@@ -52,6 +99,180 @@ pub async fn create_tag(
         Err(err) => return Err(AppError::from(err)),
     }
 
-    let tag: Tag = tags::table.find(new_tag.id).first(&mut conn)?;
+    let tag: Tag = tags::table
-    Ok(Json(TagResponse::from(tag)))
+        .find(new_tag.id)
+        .filter(tags::tenant_id.eq(tenant_id))
+        .first(&mut conn)
+        .one()?;
+
+    TagCatalogEntry {
+        id: tag.id,
+        label: tag.label,
+        color: tag.color,
+        usage_count: 0,
+    }
+    .into_json()
+}
+
+pub async fn update_tag(
+    Path(tag_id): Path<Uuid>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
+    Json(body): Json<Value>,
+) -> AppResult<Json<TagCatalogEntry>> {
+    let existing: Tag = tags::table
+        .find(tag_id)
+        .filter(tags::tenant_id.eq(tenant_id))
+        .first(&mut conn)
+        .one()?;
+    let label_class = classify_nullable(body.get("label")).map_err(AppError::bad_request)?;
+    let color_class = classify_nullable(body.get("color")).map_err(AppError::bad_request)?;
+
+    if matches!(label_class, NullableValue::Omitted)
+        && matches!(color_class, NullableValue::Omitted)
+    {
+        let usage_count: i64 = document_tags::table
+            .filter(document_tags::tag_id.eq(tag_id))
+            .select(count_star())
+            .first(&mut conn)?;
+        return TagCatalogEntry {
+            id: existing.id,
+            label: existing.label.clone(),
+            color: existing.color.clone(),
+            usage_count,
+        }
+        .into_json();
+    }
+
+    let mut new_label: Option<String> = None;
+    let mut label_changed = false;
+    match label_class {
+        NullableValue::Omitted => {}
+        NullableValue::Null => {
+            return Err(AppError::bad_request("label cannot be null"));
+        }
+        NullableValue::String(value) => {
+            let trimmed = value.trim();
+            if trimmed.is_empty() {
+                return Err(AppError::bad_request("label must not be empty"));
+            }
+            if trimmed != existing.label {
+                let duplicate = tags::table
+                    .filter(tags::label.eq(trimmed))
+                    .filter(tags::id.ne(tag_id))
+                    .filter(tags::tenant_id.eq(tenant_id))
+                    .first::<Tag>(&mut conn)
+                    .optional()?;
+                if duplicate.is_some() {
+                    return Err(AppError::bad_request("tag label already exists"));
+                }
+                new_label = Some(trimmed.to_string());
+                label_changed = true;
+            }
+        }
+    }
+
+    let mut color_change: Option<Option<String>> = None;
+    let mut color_changed = false;
+    match color_class {
+        NullableValue::Omitted => {}
+        NullableValue::Null => {
+            color_change = Some(None);
+            color_changed = true;
+        }
+        NullableValue::String(value) => {
+            let trimmed = value.trim();
+            if trimmed.is_empty() {
+                return Err(AppError::bad_request("color must not be empty"));
+            }
+            if existing.color.as_deref() != Some(trimmed) {
+                color_change = Some(Some(trimmed.to_string()));
+                color_changed = true;
+            }
+        }
+    }
+
+    if !label_changed && !color_changed {
+        let usage_count: i64 = document_tags::table
+            .filter(document_tags::tag_id.eq(tag_id))
+            .filter(document_tags::tenant_id.eq(tenant_id))
+            .select(count_star())
+            .first(&mut conn)?;
+        return Ok(Json(TagCatalogEntry {
+            id: existing.id,
+            label: existing.label.clone(),
+            color: existing.color.clone(),
+            usage_count,
+        }));
+    }
+
+    let changeset = UpdateTagChangeset {
+        label: new_label.as_deref(),
+        color: color_change
+            .as_ref()
+            .map(|opt| opt.as_ref().map(|value| value.as_str())),
+    };
+
+    diesel::update(
+        tags::table
+            .find(tag_id)
+            .filter(tags::tenant_id.eq(tenant_id)),
+    )
+    .set(&changeset)
+    .execute(&mut conn)?;
+
+    let updated: Tag = tags::table
+        .find(tag_id)
+        .filter(tags::tenant_id.eq(tenant_id))
+        .first(&mut conn)
+        .one()?;
+    let usage_count: i64 = document_tags::table
+        .filter(document_tags::tag_id.eq(tag_id))
+        .filter(document_tags::tenant_id.eq(tenant_id))
+        .select(count_star())
+        .first(&mut conn)?;
+
+    TagCatalogEntry {
+        id: updated.id,
+        label: updated.label,
+        color: updated.color,
+        usage_count,
+    }
+    .into_json()
+}
+
+pub async fn delete_tag(
+    Path(tag_id): Path<Uuid>,
+    TenantScopedConn {
+        mut conn,
+        tenant_id,
+        ..
+    }: TenantScopedConn,
+) -> AppResult<StatusCode> {
+    let usage: i64 = document_tags::table
+        .filter(document_tags::tag_id.eq(tag_id))
+        .filter(document_tags::tenant_id.eq(tenant_id))
+        .select(count_star())
+        .first(&mut conn)?;
+
+    if usage > 0 {
+        return Err(AppError::bad_request(
+            "cannot delete tag that is still assigned to documents",
+        ));
+    }
+
+    let deleted = diesel::delete(
+        tags::table
+            .find(tag_id)
+            .filter(tags::tenant_id.eq(tenant_id)),
+    )
+    .execute(&mut conn)?;
+    if deleted == 0 {
+        return Err(AppError::not_found());
+    }
+
+    no_content()
 }

backend/src/routes/webdav/mod.rs

@@ -0,0 +1,889 @@
+use std::time::Duration;
+
+use axum::body::Body;
+use axum::extract::State;
+use axum::http::{header, HeaderMap, Method, StatusCode};
+use axum::response::Response;
+use axum::Router;
+use base64::engine::general_purpose::STANDARD as BASE64;
+use base64::Engine;
+use diesel::prelude::*;
+use diesel::PgConnection;
+use futures_util::StreamExt;
+use percent_encoding::{percent_decode_str, utf8_percent_encode, NON_ALPHANUMERIC};
+use quick_xml::events::{BytesDecl, BytesEnd, BytesStart, BytesText, Event};
+use quick_xml::Writer;
+use uuid::Uuid;
+
+use crate::auth::password;
+use crate::error::{AppError, AppResult};
+use crate::models::{Document, DocumentVersion, Folder, User};
+use crate::schema::{
+    document_versions::dsl as document_versions_dsl, documents::dsl as documents_dsl,
+    folders::dsl as folders_dsl, tenants::dsl as tenant_dsl,
+    user_memberships::dsl as memberships_dsl, users::dsl as users_dsl,
+};
+use crate::state::AppState;
+use crate::utils::{http::inline_content_disposition, time::to_http_date};
+
+const REALM: &str = "Papercrate WebDAV";
+const DOWNLOAD_URL_TTL_SECONDS: u64 = 300;
+
+#[derive(Clone, Debug)]
+struct TenantEntry {
+    tenant_id: Uuid,
+    slug: String,
+}
+
+#[derive(Clone, Debug)]
+struct WebDavContext {
+    _user_id: Uuid,
+    _username: String,
+    tenants: Vec<TenantEntry>,
+}
+
+pub fn create_router() -> Router<AppState> {
+    Router::new().fallback(webdav_entrypoint)
+}
+
+async fn webdav_entrypoint(
+    State(state): State<AppState>,
+    req: axum::http::Request<axum::body::Body>,
+) -> Result<Response, AppError> {
+    let method = req.method().clone();
+    let headers = req.headers().clone();
+    let path = req.uri().path().trim_start_matches('/').to_string();
+
+    tracing::debug!(method = %method, %path, "webdav entrypoint" );
+
+    match method {
+        ref m if m == Method::OPTIONS => Ok(handle_options()),
+        ref m if m == Method::GET => handle_get_or_head(&state, &path, headers, Method::GET).await,
+        ref m if m == Method::HEAD => {
+            handle_get_or_head(&state, &path, headers, Method::HEAD).await
+        }
+        _ => {
+            if method.as_str() == "PROPFIND" {
+                handle_propfind(&state, &path, headers).await
+            } else {
+                Ok(method_not_allowed())
+            }
+        }
+    }
+}
+
+async fn handle_propfind(
+    state: &AppState,
+    path: &str,
+    headers: HeaderMap,
+) -> Result<Response, AppError> {
+    let context = match authenticate(state, &headers)? {
+        Some(user) => user,
+        None => return Ok(unauthorized_response()),
+    };
+
+    let depth = match parse_depth(&headers) {
+        Ok(value) => value,
+        Err(response) => return Ok(response),
+    };
+
+    let segments = parse_segments(path)?;
+
+    let resources = if segments.is_empty() {
+        build_account_root_resources(&context.tenants, depth)
+    } else {
+        let (requested_slug, remainder) = segments.split_first().unwrap();
+        let tenant_entry = match context
+            .tenants
+            .iter()
+            .find(|entry| entry.slug.eq_ignore_ascii_case(requested_slug))
+        {
+            Some(entry) => TenantEntry {
+                tenant_id: entry.tenant_id,
+                slug: entry.slug.clone(),
+            },
+            None => return Ok(not_found_response()),
+        };
+
+        let resolution = match resolve_path(state, &tenant_entry, remainder)? {
+            Some(resolved) => resolved,
+            None => return Ok(not_found_response()),
+        };
+
+        match resolution {
+            ResolvedPath::TenantRoot { chain } => {
+                let contents = fetch_folder_contents(state, tenant_entry.tenant_id, None)?;
+                build_resources_for_folder(None, &chain, &contents, depth)
+            }
+            ResolvedPath::Folder { folder, chain } => {
+                let contents =
+                    fetch_folder_contents(state, tenant_entry.tenant_id, Some(folder.id))?;
+                build_resources_for_folder(Some(&folder), &chain, &contents, depth)
+            }
+            ResolvedPath::Document {
+                document,
+                version,
+                chain,
+            } => build_resources_for_document(&chain, &document, &version),
+        }
+    };
+
+    let body = render_multistatus(&resources)
+        .map_err(|err| AppError::internal(format!("failed to render WebDAV response: {err}")))?;
+
+    let response = Response::builder()
+        .status(multi_status())
+        .header(header::CONTENT_TYPE, "application/xml; charset=utf-8")
+        .body(Body::from(body))
+        .expect("valid response");
+
+    Ok(response)
+}
+
+async fn handle_get_or_head(
+    state: &AppState,
+    path: &str,
+    headers: HeaderMap,
+    method: Method,
+) -> Result<Response, AppError> {
+    let context = match authenticate(state, &headers)? {
+        Some(user) => user,
+        None => return Ok(unauthorized_response()),
+    };
+
+    let segments = parse_segments(path)?;
+    let (requested_slug, remainder) = match segments.split_first() {
+        Some(values) => values,
+        None => return Ok(method_not_allowed()),
+    };
+
+    let tenant_entry = match context
+        .tenants
+        .iter()
+        .find(|entry| entry.slug.eq_ignore_ascii_case(requested_slug))
+    {
+        Some(entry) => TenantEntry {
+            tenant_id: entry.tenant_id,
+            slug: entry.slug.clone(),
+        },
+        None => return Ok(not_found_response()),
+    };
+
+    if remainder.is_empty() {
+        return Ok(method_not_allowed());
+    }
+
+    let resolution = match resolve_path(state, &tenant_entry, remainder)? {
+        Some(resolved) => resolved,
+        None => return Ok(not_found_response()),
+    };
+
+    let (document, version, chain) = match resolution {
+        ResolvedPath::Document {
+            document,
+            version,
+            chain,
+        } => (document, version, chain),
+        _ => return Ok(method_not_allowed()),
+    };
+
+    stream_document(state, &document, &version, &chain, headers, method).await
+}
+
+fn handle_options() -> Response {
+    Response::builder()
+        .status(StatusCode::OK)
+        .header("DAV", "1,2")
+        .header(header::ALLOW, "OPTIONS, PROPFIND, GET, HEAD")
+        .header("Accept-Ranges", "bytes")
+        .body(Body::empty())
+        .expect("valid OPTIONS response")
+}
+
+fn method_not_allowed() -> Response {
+    Response::builder()
+        .status(StatusCode::METHOD_NOT_ALLOWED)
+        .body(Body::empty())
+        .expect("valid response")
+}
+
+fn not_found_response() -> Response {
+    Response::builder()
+        .status(StatusCode::NOT_FOUND)
+        .body(Body::empty())
+        .expect("valid response")
+}
+
+fn unauthorized_response() -> Response {
+    Response::builder()
+        .status(StatusCode::UNAUTHORIZED)
+        .header(
+            header::WWW_AUTHENTICATE,
+            format!("Basic realm=\"{REALM}\", charset=\"UTF-8\""),
+        )
+        .body(Body::empty())
+        .expect("valid response")
+}
+
+fn multi_status() -> StatusCode {
+    StatusCode::from_u16(207).expect("valid multi-status")
+}
+
+fn parse_depth(headers: &HeaderMap) -> Result<u8, Response> {
+    match headers.get("Depth") {
+        None => Ok(1),
+        Some(value) => match value.to_str() {
+            Ok("0") => Ok(0),
+            Ok("1") => Ok(1),
+            Ok("infinity") => Err(Response::builder()
+                .status(StatusCode::FORBIDDEN)
+                .body(Body::empty())
+                .expect("valid response")),
+            _ => Err(Response::builder()
+                .status(StatusCode::BAD_REQUEST)
+                .body(Body::empty())
+                .expect("valid response")),
+        },
+    }
+}
+
+fn parse_segments(path: &str) -> AppResult<Vec<String>> {
+    if path.trim_matches('/').is_empty() {
+        return Ok(vec![]);
+    }
+
+    let segments = path
+        .split('/')
+        .filter(|segment| !segment.is_empty())
+        .map(|segment| {
+            percent_decode_str(segment)
+                .decode_utf8()
+                .map(|cow| cow.into_owned())
+                .map_err(|_| AppError::bad_request("invalid UTF-8 in path"))
+        })
+        .collect::<Result<Vec<_>, _>>()?;
+
+    Ok(segments)
+}
+
+fn fetch_folder_contents(
+    state: &AppState,
+    tenant_id: Uuid,
+    folder_id: Option<Uuid>,
+) -> AppResult<WebDavFolderContents> {
+    let mut conn = state.db_for_tenant(tenant_id)?;
+
+    let folder = match folder_id {
+        Some(id) => Some(
+            folders_dsl::folders
+                .filter(folders_dsl::tenant_id.eq(tenant_id))
+                .find(id)
+                .first::<Folder>(&mut conn)?,
+        ),
+        None => None,
+    };
+
+    let subfolders: Vec<Folder> = match folder_id {
+        Some(id) => folders_dsl::folders
+            .filter(folders_dsl::tenant_id.eq(tenant_id))
+            .filter(folders_dsl::parent_id.eq(Some(id)))
+            .order(folders_dsl::name.asc())
+            .load(&mut conn)?,
+        None => folders_dsl::folders
+            .filter(folders_dsl::tenant_id.eq(tenant_id))
+            .filter(folders_dsl::parent_id.is_null())
+            .order(folders_dsl::name.asc())
+            .load(&mut conn)?,
+    };
+
+    let mut docs_query = documents_dsl::documents
+        .filter(documents_dsl::deleted_at.is_null())
+        .filter(documents_dsl::tenant_id.eq(tenant_id))
+        .into_boxed();
+
+    docs_query = match folder_id {
+        Some(id) => docs_query.filter(documents_dsl::folder_id.eq(Some(id))),
+        None => docs_query.filter(documents_dsl::folder_id.is_null()),
+    };
+
+    let documents: Vec<Document> = docs_query
+        .order(documents_dsl::uploaded_at.desc())
+        .load(&mut conn)?;
+
+    let version_ids: Vec<Uuid> = documents.iter().map(|doc| doc.current_version_id).collect();
+    let versions: Vec<DocumentVersion> = if version_ids.is_empty() {
+        Vec::new()
+    } else {
+        document_versions_dsl::document_versions
+            .filter(document_versions_dsl::id.eq_any(&version_ids))
+            .load(&mut conn)?
+    };
+
+    let mut version_map = versions
+        .into_iter()
+        .map(|version| (version.id, version))
+        .collect::<std::collections::HashMap<_, _>>();
+
+    let mut entries = Vec::with_capacity(documents.len());
+    for document in documents {
+        if let Some(version) = version_map.remove(&document.current_version_id) {
+            entries.push(DocumentEntry { document, version });
+        }
+    }
+
+    Ok(WebDavFolderContents {
+        _folder: folder,
+        subfolders,
+        documents: entries,
+    })
+}
+
+async fn stream_document(
+    state: &AppState,
+    document: &Document,
+    version: &DocumentVersion,
+    _chain: &[String],
+    headers: HeaderMap,
+    method: Method,
+) -> Result<Response, AppError> {
+    let range_header = headers.get(header::RANGE).cloned();
+
+    let storage = state.storage_for_tenant(document.tenant_id)?;
+
+    let url = storage
+        .presign_get_object(
+            &version.s3_key,
+            Duration::from_secs(DOWNLOAD_URL_TTL_SECONDS),
+        )
+        .await
+        .map_err(|err| AppError::internal(format!("failed to presign document download: {err}")))?;
+
+    let client = reqwest::Client::new();
+    let mut request = client.request(method.clone(), url.clone());
+
+    if let Some(range) = range_header.clone() {
+        request = request.header(header::RANGE, range.clone());
+    }
+
+    let upstream = request
+        .send()
+        .await
+        .map_err(|err| AppError::internal(format!("failed to fetch document stream: {err}")))?;
+
+    let status =
+        StatusCode::from_u16(upstream.status().as_u16()).unwrap_or(StatusCode::BAD_GATEWAY);
+
+    if !(status.is_success() || status == StatusCode::PARTIAL_CONTENT) {
+        return Err(AppError::internal(format!(
+            "upstream download returned status {status}"
+        )));
+    }
+
+    let mut builder = Response::builder().status(status);
+
+    if let Some(content_type) = upstream.headers().get(header::CONTENT_TYPE) {
+        builder = builder.header(header::CONTENT_TYPE, content_type);
+    } else if let Some(ref typ) = document.content_type {
+        builder = builder.header(header::CONTENT_TYPE, typ);
+    }
+
+    if let Some(content_length) = upstream.headers().get(header::CONTENT_LENGTH) {
+        builder = builder.header(header::CONTENT_LENGTH, content_length);
+    }
+
+    if let Some(range) = upstream.headers().get(header::CONTENT_RANGE) {
+        builder = builder.header(header::CONTENT_RANGE, range);
+    }
+
+    builder = builder.header("Accept-Ranges", "bytes");
+
+    if let Some(disposition) = inline_content_disposition(&document.filename) {
+        builder = builder.header(header::CONTENT_DISPOSITION, disposition);
+    }
+
+    builder = builder.header(header::ETAG, format!("\"{}\"", version.id));
+
+    if method == Method::HEAD {
+        return builder
+            .body(Body::empty())
+            .map_err(|err| AppError::internal(format!("failed to build response: {err}")));
+    }
+
+    let stream = upstream
+        .bytes_stream()
+        .map(|chunk| chunk.map_err(|err| std::io::Error::new(std::io::ErrorKind::Other, err)));
+    let body = Body::from_stream(stream);
+
+    builder
+        .body(body)
+        .map_err(|err| AppError::internal(format!("failed to build response: {err}")))
+}
+
+fn authenticate(state: &AppState, headers: &HeaderMap) -> Result<Option<WebDavContext>, AppError> {
+    tracing::debug!("webdav authenticate invoked");
+    let authorization = match headers.get(header::AUTHORIZATION) {
+        Some(value) => match value.to_str() {
+            Ok(header) if header.starts_with("Basic ") => {
+                tracing::debug!("authorization header present");
+                &header[6..]
+            }
+            Ok(other) => {
+                tracing::warn!(header = %other, "non-basic authorization header");
+                return Ok(None);
+            }
+            Err(err) => {
+                tracing::warn!(error = %err, "invalid authorization header");
+                return Ok(None);
+            }
+        },
+        None => {
+            tracing::debug!("no authorization header");
+            return Ok(None);
+        }
+    };
+
+    let decoded = match BASE64.decode(authorization) {
+        Ok(bytes) => bytes,
+        Err(err) => {
+            tracing::warn!(error = %err, "failed to decode basic credentials");
+            return Ok(None);
+        }
+    };
+
+    let credential_str = match String::from_utf8(decoded) {
+        Ok(value) => value,
+        Err(err) => {
+            tracing::warn!(error = %err, "invalid utf-8 basic credentials");
+            return Ok(None);
+        }
+    };
+
+    let (username, password) = match credential_str.split_once(':') {
+        Some((username, password)) if !username.is_empty() => (username, password),
+        _ => return Ok(None),
+    };
+
+    tracing::debug!(%username, "attempting webdav login");
+    let mut conn = state.db_unscoped()?;
+
+    let user: User = match users_dsl::users
+        .filter(users_dsl::username.eq(username))
+        .first(&mut conn)
+    {
+        Ok(user) => user,
+        Err(diesel::result::Error::NotFound) => {
+            tracing::warn!(%username, "webdav user not found");
+            return Ok(None);
+        }
+        Err(err) => return Err(AppError::from(err)),
+    };
+
+    let valid = password::verify_password(password, &user.password_hash)
+        .map_err(|_| AppError::internal("failed to verify password"))?;
+
+    if !valid {
+        tracing::warn!(%username, "webdav password invalid");
+        return Ok(None);
+    }
+
+    let tenant_rows: Vec<(Uuid, String)> = memberships_dsl::user_memberships
+        .inner_join(tenant_dsl::tenants)
+        .filter(memberships_dsl::user_id.eq(user.id))
+        .select((tenant_dsl::id, tenant_dsl::slug))
+        .load(&mut conn)?;
+
+    if tenant_rows.is_empty() {
+        tracing::warn!(%username, "webdav user has no tenant memberships");
+        return Ok(None);
+    }
+
+    let tenants: Vec<TenantEntry> = tenant_rows
+        .into_iter()
+        .map(|(tenant_id, slug)| TenantEntry { tenant_id, slug })
+        .collect();
+
+    tracing::debug!(%username, tenant_count = tenants.len(), "webdav login success");
+    Ok(Some(WebDavContext {
+        _user_id: user.id,
+        _username: user.username,
+        tenants,
+    }))
+}
+
+fn build_resources_for_folder(
+    folder: Option<&Folder>,
+    chain: &[String],
+    contents: &WebDavFolderContents,
+    depth: u8,
+) -> Vec<DavResource> {
+    let mut resources = Vec::new();
+
+    let display_name = folder
+        .map(|folder| folder.name.clone())
+        .unwrap_or_else(|| chain.last().cloned().unwrap_or_else(|| "/".to_string()));
+
+    let href = build_href(chain, true);
+    let last_modified = folder.map(|folder| to_http_date(folder.updated_at));
+
+    resources.push(DavResource {
+        href,
+        display_name,
+        is_collection: true,
+        content_length: None,
+        content_type: None,
+        last_modified,
+    });
+
+    if depth == 0 {
+        return resources;
+    }
+
+    for subfolder in &contents.subfolders {
+        let mut child_chain = chain.to_vec();
+        child_chain.push(subfolder.name.clone());
+        resources.push(DavResource {
+            href: build_href(&child_chain, true),
+            display_name: subfolder.name.clone(),
+            is_collection: true,
+            content_length: None,
+            content_type: None,
+            last_modified: Some(to_http_date(subfolder.updated_at)),
+        });
+    }
+
+    for entry in &contents.documents {
+        let mut child_chain = chain.to_vec();
+        child_chain.push(entry.document.filename.clone());
+        resources.push(document_to_resource(
+            &child_chain,
+            &entry.document,
+            &entry.version,
+        ));
+    }
+
+    resources
+}
+
+fn build_account_root_resources(tenants: &[TenantEntry], depth: u8) -> Vec<DavResource> {
+    let mut resources = Vec::new();
+
+    resources.push(DavResource {
+        href: "/".to_string(),
+        display_name: "/".to_string(),
+        is_collection: true,
+        content_length: None,
+        content_type: None,
+        last_modified: None,
+    });
+
+    if depth == 0 {
+        return resources;
+    }
+
+    for tenant in tenants {
+        let href = build_href(&[tenant.slug.clone()], true);
+        resources.push(DavResource {
+            href,
+            display_name: tenant.slug.clone(),
+            is_collection: true,
+            content_length: None,
+            content_type: None,
+            last_modified: None,
+        });
+    }
+
+    resources
+}
+
+fn build_resources_for_document(
+    chain: &[String],
+    document: &Document,
+    version: &DocumentVersion,
+) -> Vec<DavResource> {
+    vec![document_to_resource(chain, document, version)]
+}
+
+fn document_to_resource(
+    chain: &[String],
+    document: &Document,
+    version: &DocumentVersion,
+) -> DavResource {
+    let href = build_href(chain, false);
+
+    DavResource {
+        href,
+        display_name: document.title.clone(),
+        is_collection: false,
+        content_length: Some(version.size_bytes),
+        content_type: document.content_type.clone(),
+        last_modified: Some(to_http_date(document.updated_at)),
+    }
+}
+
+fn build_href(names: &[String], is_collection: bool) -> String {
+    if names.is_empty() {
+        return "/".to_string();
+    }
+
+    let encoded = names
+        .iter()
+        .map(|name| utf8_percent_encode(name, NON_ALPHANUMERIC).to_string())
+        .collect::<Vec<_>>();
+
+    let mut path = format!("/{}", encoded.join("/"));
+    if is_collection && !path.ends_with('/') {
+        path.push('/');
+    }
+    path
+}
+
+fn render_multistatus(resources: &[DavResource]) -> Result<Vec<u8>, quick_xml::Error> {
+    let mut writer = Writer::new(Vec::new());
+    writer.write_event(Event::Decl(BytesDecl::new("1.0", Some("UTF-8"), None)))?;
+
+    let mut multistatus = BytesStart::new("D:multistatus");
+    multistatus.push_attribute(("xmlns:D", "DAV:"));
+    writer.write_event(Event::Start(multistatus))?;
+
+    for resource in resources {
+        writer.write_event(Event::Start(BytesStart::new("D:response")))?;
+
+        writer.write_event(Event::Start(BytesStart::new("D:href")))?;
+        writer.write_event(Event::Text(BytesText::new(&resource.href)))?;
+        writer.write_event(Event::End(BytesEnd::new("D:href")))?;
+
+        writer.write_event(Event::Start(BytesStart::new("D:propstat")))?;
+        writer.write_event(Event::Start(BytesStart::new("D:prop")))?;
+
+        writer.write_event(Event::Start(BytesStart::new("D:displayname")))?;
+        writer.write_event(Event::Text(BytesText::new(&resource.display_name)))?;
+        writer.write_event(Event::End(BytesEnd::new("D:displayname")))?;
+
+        writer.write_event(Event::Start(BytesStart::new("D:resourcetype")))?;
+        if resource.is_collection {
+            writer.write_event(Event::Empty(BytesStart::new("D:collection")))?;
+        }
+        writer.write_event(Event::End(BytesEnd::new("D:resourcetype")))?;
+
+        if let Some(length) = resource.content_length {
+            writer.write_event(Event::Start(BytesStart::new("D:getcontentlength")))?;
+            writer.write_event(Event::Text(BytesText::new(&length.to_string())))?;
+            writer.write_event(Event::End(BytesEnd::new("D:getcontentlength")))?;
+        }
+
+        if let Some(content_type) = &resource.content_type {
+            writer.write_event(Event::Start(BytesStart::new("D:getcontenttype")))?;
+            writer.write_event(Event::Text(BytesText::new(content_type)))?;
+            writer.write_event(Event::End(BytesEnd::new("D:getcontenttype")))?;
+        }
+
+        if let Some(last_modified) = &resource.last_modified {
+            writer.write_event(Event::Start(BytesStart::new("D:getlastmodified")))?;
+            writer.write_event(Event::Text(BytesText::new(last_modified)))?;
+            writer.write_event(Event::End(BytesEnd::new("D:getlastmodified")))?;
+        }
+
+        writer.write_event(Event::End(BytesEnd::new("D:prop")))?;
+
+        writer.write_event(Event::Start(BytesStart::new("D:status")))?;
+        writer.write_event(Event::Text(BytesText::new("HTTP/1.1 200 OK")))?;
+        writer.write_event(Event::End(BytesEnd::new("D:status")))?;
+
+        writer.write_event(Event::End(BytesEnd::new("D:propstat")))?;
+        writer.write_event(Event::End(BytesEnd::new("D:response")))?;
+    }
+
+    writer.write_event(Event::End(BytesEnd::new("D:multistatus")))?;
+    Ok(writer.into_inner())
+}
+
+struct WebDavFolderContents {
+    _folder: Option<Folder>,
+    subfolders: Vec<Folder>,
+    documents: Vec<DocumentEntry>,
+}
+
+struct DocumentEntry {
+    document: Document,
+    version: DocumentVersion,
+}
+
+struct DavResource {
+    href: String,
+    display_name: String,
+    is_collection: bool,
+    content_length: Option<i64>,
+    content_type: Option<String>,
+    last_modified: Option<String>,
+}
+enum ResolvedPath {
+    TenantRoot {
+        chain: Vec<String>,
+    },
+    Folder {
+        folder: Folder,
+        chain: Vec<String>,
+    },
+    Document {
+        document: Document,
+        version: DocumentVersion,
+        chain: Vec<String>,
+    },
+}
+
+fn resolve_path(
+    state: &AppState,
+    tenant: &TenantEntry,
+    segments: &[String],
+) -> AppResult<Option<ResolvedPath>> {
+    let mut conn = state.db_for_tenant(tenant.tenant_id)?;
+    let mut parent_id: Option<Uuid> = None;
+    let mut chain: Vec<String> = vec![tenant.slug.clone()];
+    let mut current_folder: Option<Folder> = None;
+
+    if segments.is_empty() {
+        return Ok(Some(ResolvedPath::TenantRoot { chain }));
+    }
+
+    for (index, segment) in segments.iter().enumerate() {
+        let is_last = index == segments.len() - 1;
+
+        if let Some(folder) = find_folder_by_name(&mut conn, tenant.tenant_id, parent_id, segment)?
+        {
+            chain.push(folder.name.clone());
+            if is_last {
+                return Ok(Some(ResolvedPath::Folder { folder, chain }));
+            }
+            parent_id = Some(folder.id);
+            current_folder = Some(folder);
+            continue;
+        }
+
+        if is_last {
+            if let Some((document, version)) =
+                find_document_by_filename(&mut conn, tenant.tenant_id, parent_id, segment)?
+            {
+                chain.push(document.filename.clone());
+                return Ok(Some(ResolvedPath::Document {
+                    document,
+                    version,
+                    chain,
+                }));
+            }
+        }
+
+        if let Ok(uuid) = Uuid::parse_str(segment) {
+            if let Some(folder) = find_folder_by_id(&mut conn, tenant.tenant_id, uuid)? {
+                if folder.parent_id != parent_id {
+                    return Ok(None);
+                }
+                chain.push(folder.name.clone());
+                if is_last {
+                    return Ok(Some(ResolvedPath::Folder { folder, chain }));
+                }
+                parent_id = Some(folder.id);
+                current_folder = Some(folder);
+                continue;
+            }
+
+            if let Some((document, version)) =
+                find_document_by_id(&mut conn, tenant.tenant_id, uuid)?
+            {
+                if document.folder_id != parent_id {
+                    return Ok(None);
+                }
+                chain.push(document.filename.clone());
+                return Ok(Some(ResolvedPath::Document {
+                    document,
+                    version,
+                    chain,
+                }));
+            }
+        }
+
+        return Ok(None);
+    }
+
+    Ok(current_folder.map(|folder| ResolvedPath::Folder { folder, chain }))
+}
+
+fn find_folder_by_name(
+    conn: &mut PgConnection,
+    tenant_id: Uuid,
+    parent_id: Option<Uuid>,
+    name: &str,
+) -> AppResult<Option<Folder>> {
+    let mut query = folders_dsl::folders
+        .filter(folders_dsl::tenant_id.eq(tenant_id))
+        .into_boxed();
+
+    query = match parent_id {
+        Some(parent) => query.filter(folders_dsl::parent_id.eq(Some(parent))),
+        None => query.filter(folders_dsl::parent_id.is_null()),
+    };
+
+    Ok(query
+        .filter(folders_dsl::name.eq(name))
+        .first::<Folder>(conn)
+        .optional()?)
+}
+
+fn find_folder_by_id(
+    conn: &mut PgConnection,
+    tenant_id: Uuid,
+    folder_id: Uuid,
+) -> AppResult<Option<Folder>> {
+    Ok(folders_dsl::folders
+        .filter(folders_dsl::tenant_id.eq(tenant_id))
+        .find(folder_id)
+        .first::<Folder>(conn)
+        .optional()?)
+}
+
+fn find_document_by_filename(
+    conn: &mut PgConnection,
+    tenant_id: Uuid,
+    parent_id: Option<Uuid>,
+    filename: &str,
+) -> AppResult<Option<(Document, DocumentVersion)>> {
+    let mut query = documents_dsl::documents
+        .filter(documents_dsl::deleted_at.is_null())
+        .filter(documents_dsl::tenant_id.eq(tenant_id))
+        .filter(documents_dsl::filename.eq(filename))
+        .into_boxed();
+
+    query = match parent_id {
+        Some(parent) => query.filter(documents_dsl::folder_id.eq(Some(parent))),
+        None => query.filter(documents_dsl::folder_id.is_null()),
+    };
+
+    if let Some(document) = query.first::<Document>(conn).optional()? {
+        let version = document_versions_dsl::document_versions
+            .find(document.current_version_id)
+            .first::<DocumentVersion>(conn)?;
+        return Ok(Some((document, version)));
+    }
+
+    Ok(None)
+}
+
+fn find_document_by_id(
+    conn: &mut PgConnection,
+    tenant_id: Uuid,
+    document_id: Uuid,
+) -> AppResult<Option<(Document, DocumentVersion)>> {
+    if let Some(document) = documents_dsl::documents
+        .filter(documents_dsl::deleted_at.is_null())
+        .filter(documents_dsl::tenant_id.eq(tenant_id))
+        .find(document_id)
+        .first::<Document>(conn)
+        .optional()?
+    {
+        let version = document_versions_dsl::document_versions
+            .find(document.current_version_id)
+            .first::<DocumentVersion>(conn)?;
+        return Ok(Some((document, version)));
+    }
+
+    Ok(None)
+}

backend/src/schema.rs

@@ -1,16 +1,50 @@
 // @generated automatically by Diesel CLI.
 
+diesel::table! {
+    correspondents (id) {
+        id -> Uuid,
+        #[max_length = 255]
+        name -> Varchar,
+        metadata -> Jsonb,
+        created_at -> Timestamptz,
+        updated_at -> Timestamptz,
+        tenant_id -> Uuid,
+    }
+}
+
+diesel::table! {
+    document_asset_objects (id) {
+        id -> Uuid,
+        asset_id -> Uuid,
+        ordinal -> Int4,
+        s3_key -> Text,
+        metadata -> Jsonb,
+        tenant_id -> Uuid,
+    }
+}
+
 diesel::table! {
     document_assets (id) {
         id -> Uuid,
         document_version_id -> Uuid,
         asset_type -> Text,
-        s3_key -> Text,
         mime_type -> Text,
-        width -> Nullable<Int4>,
-        height -> Nullable<Int4>,
         metadata -> Jsonb,
         created_at -> Timestamptz,
+        cardinality -> Nullable<Int4>,
+        tenant_id -> Uuid,
+    }
+}
+
+diesel::table! {
+    document_correspondents (document_id, correspondent_id, role) {
+        document_id -> Uuid,
+        correspondent_id -> Uuid,
+        #[max_length = 32]
+        role -> Varchar,
+        assigned_at -> Timestamptz,
+        assigned_by -> Nullable<Uuid>,
+        tenant_id -> Uuid,
     }
 }
 
@@ -20,6 +54,7 @@ diesel::table! {
         tag_id -> Uuid,
         assigned_at -> Timestamptz,
         assigned_by -> Nullable<Uuid>,
+        tenant_id -> Uuid,
     }
 }
 
@@ -35,6 +70,8 @@ diesel::table! {
         checksum -> Varchar,
         created_at -> Timestamptz,
         operations_summary -> Jsonb,
+        metadata -> Jsonb,
+        tenant_id -> Uuid,
     }
 }
 
@@ -48,7 +85,6 @@ diesel::table! {
         #[max_length = 100]
         content_type -> Nullable<Varchar>,
         folder_id -> Nullable<Uuid>,
-        current_version -> Int4,
         uploaded_at -> Timestamptz,
         updated_at -> Timestamptz,
         deleted_at -> Nullable<Timestamptz>,
@@ -56,6 +92,8 @@ diesel::table! {
         issued_at -> Nullable<Timestamptz>,
         #[max_length = 255]
         title -> Varchar,
+        current_version_id -> Uuid,
+        tenant_id -> Uuid,
     }
 }
 
@@ -65,10 +103,9 @@ diesel::table! {
         #[max_length = 255]
         name -> Varchar,
         parent_id -> Nullable<Uuid>,
-        #[max_length = 1000]
-        path_cache -> Nullable<Varchar>,
         created_at -> Timestamptz,
         updated_at -> Timestamptz,
+        tenant_id -> Uuid,
     }
 }
 
@@ -83,6 +120,21 @@ diesel::table! {
         last_error -> Nullable<Text>,
         created_at -> Timestamptz,
         updated_at -> Timestamptz,
+        tenant_id -> Uuid,
+    }
+}
+
+diesel::table! {
+    refresh_tokens (id) {
+        id -> Uuid,
+        user_id -> Uuid,
+        token_hash -> Text,
+        issued_at -> Timestamptz,
+        expires_at -> Timestamptz,
+        revoked_at -> Nullable<Timestamptz>,
+        created_at -> Timestamptz,
+        updated_at -> Timestamptz,
+        tenant_id -> Uuid,
     }
 }
 
@@ -94,6 +146,31 @@ diesel::table! {
         #[max_length = 7]
         color -> Nullable<Varchar>,
         created_at -> Timestamptz,
+        tenant_id -> Uuid,
+    }
+}
+
+diesel::table! {
+    tenants (id) {
+        id -> Uuid,
+        slug -> Text,
+        storage_root -> Nullable<Text>,
+        quickwit_index -> Nullable<Text>,
+        status -> Text,
+        config -> Jsonb,
+        created_at -> Timestamptz,
+        updated_at -> Timestamptz,
+    }
+}
+
+diesel::table! {
+    user_memberships (id) {
+        id -> Uuid,
+        user_id -> Uuid,
+        tenant_id -> Uuid,
+        role -> Text,
+        created_at -> Timestamptz,
+        updated_at -> Timestamptz,
     }
 }
 
@@ -104,27 +181,48 @@ diesel::table! {
         username -> Varchar,
         #[max_length = 255]
         password_hash -> Varchar,
-        #[max_length = 16]
-        role -> Varchar,
         created_at -> Timestamptz,
         updated_at -> Timestamptz,
     }
 }
 
+diesel::joinable!(correspondents -> tenants (tenant_id));
+diesel::joinable!(document_asset_objects -> document_assets (asset_id));
+diesel::joinable!(document_asset_objects -> tenants (tenant_id));
 diesel::joinable!(document_assets -> document_versions (document_version_id));
+diesel::joinable!(document_assets -> tenants (tenant_id));
+diesel::joinable!(document_correspondents -> correspondents (correspondent_id));
+diesel::joinable!(document_correspondents -> documents (document_id));
+diesel::joinable!(document_correspondents -> tenants (tenant_id));
+diesel::joinable!(document_correspondents -> users (assigned_by));
 diesel::joinable!(document_tags -> documents (document_id));
 diesel::joinable!(document_tags -> tags (tag_id));
+diesel::joinable!(document_tags -> tenants (tenant_id));
 diesel::joinable!(document_tags -> users (assigned_by));
-diesel::joinable!(document_versions -> documents (document_id));
+diesel::joinable!(document_versions -> tenants (tenant_id));
 diesel::joinable!(documents -> folders (folder_id));
+diesel::joinable!(documents -> tenants (tenant_id));
+diesel::joinable!(folders -> tenants (tenant_id));
+diesel::joinable!(jobs -> tenants (tenant_id));
+diesel::joinable!(refresh_tokens -> tenants (tenant_id));
+diesel::joinable!(refresh_tokens -> users (user_id));
+diesel::joinable!(tags -> tenants (tenant_id));
+diesel::joinable!(user_memberships -> tenants (tenant_id));
+diesel::joinable!(user_memberships -> users (user_id));
 
 diesel::allow_tables_to_appear_in_same_query!(
+    correspondents,
+    document_asset_objects,
     document_assets,
+    document_correspondents,
     document_tags,
     document_versions,
     documents,
     folders,
     jobs,
+    refresh_tokens,
     tags,
+    tenants,
+    user_memberships,
     users,
 );

backend/src/state.rs

@@ -4,43 +4,79 @@ use diesel::{
     pg::PgConnection,
     r2d2::{ConnectionManager, PooledConnection},
 };
+use uuid::Uuid;
 
 use crate::{
     auth::jwt::JwtService,
     config::AppConfig,
     db::PgPool,
     error::{AppError, AppResult},
-    storage::ObjectStorage,
+    storage::{ObjectStorage, TenantStorage},
+    tenants::{apply_tenant_guc, TenantService},
 };
 
-type PgPooledConnection = PooledConnection<ConnectionManager<PgConnection>>;
+pub type PgPooledConnection = PooledConnection<ConnectionManager<PgConnection>>;
 
 #[derive(Clone)]
 pub struct AppState {
     pub pool: PgPool,
     pub config: Arc<AppConfig>,
-    pub storage: Arc<dyn ObjectStorage>,
+    storage: Arc<dyn ObjectStorage>,
     pub jwt: JwtService,
+    pub tenants: TenantService,
 }
 
 impl AppState {
+    pub async fn initialize(
+        config: AppConfig,
+        pool_size_override: Option<u32>,
+    ) -> anyhow::Result<Self> {
+        let pool_size = pool_size_override.unwrap_or(config.database_max_pool_size);
+        let pool = crate::db::init_pool_with_size(&config.database_url, pool_size)?;
+        let s3_client = crate::s3::build_client(&config).await?;
+        let storage = Arc::new(crate::storage::S3Storage::new(
+            s3_client,
+            config.s3_bucket.clone(),
+        ));
+        let jwt = crate::auth::jwt::JwtService::from_config(&config)?;
+
+        Ok(Self::new(pool, config, storage, jwt))
+    }
+
     pub fn new(
         pool: PgPool,
         config: AppConfig,
         storage: Arc<dyn ObjectStorage>,
         jwt: JwtService,
     ) -> Self {
+        let config = Arc::new(config);
+        let tenants = TenantService::new(pool.clone());
+
         Self {
             pool,
-            config: Arc::new(config),
+            config,
             storage,
             jwt,
+            tenants,
         }
     }
 
-    pub fn db(&self) -> AppResult<PgPooledConnection> {
+    pub fn db_for_tenant(&self, tenant_id: Uuid) -> AppResult<PgPooledConnection> {
+        debug_assert!(!tenant_id.is_nil(), "nil tenant_id passed to db_for_tenant");
+        let mut conn = self.db_unscoped()?;
+        apply_tenant_guc(&mut conn, tenant_id)?;
+        Ok(conn)
+    }
+
+    pub(crate) fn db_unscoped(&self) -> AppResult<PgPooledConnection> {
         self.pool
             .get()
             .map_err(|err| AppError::internal(format!("database pool error: {err}")))
     }
+
+    pub fn storage_for_tenant(&self, tenant_id: Uuid) -> AppResult<TenantStorage> {
+        let tenant = self.tenants.get_by_id(tenant_id)?;
+        TenantStorage::new(self.storage.clone(), &tenant)
+            .map_err(|err| AppError::internal(format!("tenant storage error: {err}")))
+    }
 }

backend/src/storage.rs

@@ -1,11 +1,15 @@
 use std::time::Duration;
 
-use anyhow::{Context, Result};
+use std::sync::Arc;
+
+use anyhow::{anyhow, Context, Result};
 use async_trait::async_trait;
 use aws_sdk_s3::presigning::PresigningConfig;
 use aws_sdk_s3::primitives::ByteStream;
 use aws_sdk_s3::Client as S3Client;
 
+use crate::models::Tenant;
+
 #[async_trait]
 pub trait ObjectStorage: Send + Sync + 'static {
     async fn put_object(
@@ -13,11 +17,14 @@ pub trait ObjectStorage: Send + Sync + 'static {
         key: &str,
         bytes: Vec<u8>,
         content_type: Option<String>,
+        content_disposition: Option<String>,
     ) -> Result<()>;
 
     async fn presign_get_object(&self, key: &str, expires_in: Duration) -> Result<String>;
 
     async fn get_object(&self, key: &str) -> Result<Vec<u8>>;
+
+    async fn delete_object(&self, key: &str) -> Result<()>;
 }
 
 pub struct S3Storage {
@@ -41,6 +48,7 @@ impl ObjectStorage for S3Storage {
         key: &str,
         bytes: Vec<u8>,
         content_type: Option<String>,
+        content_disposition: Option<String>,
     ) -> Result<()> {
         let mut request = self
             .client
@@ -53,6 +61,10 @@ impl ObjectStorage for S3Storage {
             request = request.content_type(content_type);
         }
 
+        if let Some(content_disposition) = content_disposition {
+            request = request.content_disposition(content_disposition);
+        }
+
         request
             .send()
             .await
@@ -99,4 +111,64 @@ impl ObjectStorage for S3Storage {
 
         Ok(bytes)
     }
+
+    async fn delete_object(&self, key: &str) -> Result<()> {
+        self.client
+            .delete_object()
+            .bucket(&self.bucket)
+            .key(key)
+            .send()
+            .await
+            .context("failed to delete object from S3")?;
+        Ok(())
+    }
+}
+#[derive(Clone)]
+pub struct TenantStorage {
+    inner: Arc<dyn ObjectStorage>,
+    root: String,
+}
+
+impl TenantStorage {
+    pub fn new(inner: Arc<dyn ObjectStorage>, tenant: &Tenant) -> Result<Self> {
+        let root = tenant
+            .storage_root
+            .as_ref()
+            .ok_or_else(|| anyhow!("tenant {} missing storage_root", tenant.id))?
+            .to_owned();
+
+        Ok(Self { inner, root })
+    }
+
+    fn qualify(&self, key: &str) -> String {
+        format!("{}{}", self.root, key)
+    }
+
+    pub async fn put_object(
+        &self,
+        key: &str,
+        bytes: Vec<u8>,
+        content_type: Option<String>,
+        content_disposition: Option<String>,
+    ) -> Result<()> {
+        let qualified = self.qualify(key);
+        self.inner
+            .put_object(&qualified, bytes, content_type, content_disposition)
+            .await
+    }
+
+    pub async fn presign_get_object(&self, key: &str, expires_in: Duration) -> Result<String> {
+        let qualified = self.qualify(key);
+        self.inner.presign_get_object(&qualified, expires_in).await
+    }
+
+    pub async fn get_object(&self, key: &str) -> Result<Vec<u8>> {
+        let qualified = self.qualify(key);
+        self.inner.get_object(&qualified).await
+    }
+
+    pub async fn delete_object(&self, key: &str) -> Result<()> {
+        let qualified = self.qualify(key);
+        self.inner.delete_object(&qualified).await
+    }
 }

backend/src/tenants.rs

@@ -0,0 +1,91 @@
+use axum::{async_trait, extract::FromRequestParts, http::request::Parts};
+use diesel::{pg::PgConnection, prelude::*, sql_types::Text};
+use uuid::Uuid;
+
+use crate::{
+    db::PgPool,
+    error::{AppError, AppResult},
+    models::Tenant,
+    schema::tenants::dsl,
+    state::AppState,
+};
+
+pub struct TenantRepository;
+
+impl TenantRepository {
+    pub fn get_by_id(conn: &mut PgConnection, tenant_id: Uuid) -> AppResult<Tenant> {
+        dsl::tenants.find(tenant_id).first(conn).map_err(Into::into)
+    }
+
+    pub fn get_by_slug(conn: &mut PgConnection, slug: &str) -> AppResult<Tenant> {
+        dsl::tenants
+            .filter(dsl::slug.eq(slug))
+            .first(conn)
+            .map_err(Into::into)
+    }
+}
+
+#[derive(Clone)]
+pub struct TenantService {
+    pool: PgPool,
+}
+
+impl TenantService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    pub fn get_by_id(&self, tenant_id: Uuid) -> AppResult<Tenant> {
+        let tenant = self.load(|conn| TenantRepository::get_by_id(conn, tenant_id))?;
+        Ok(tenant)
+    }
+
+    pub fn get_by_slug(&self, slug: &str) -> AppResult<Tenant> {
+        let slug_owned = slug.to_owned();
+        let tenant = self.load(|conn| TenantRepository::get_by_slug(conn, &slug_owned))?;
+        Ok(tenant)
+    }
+
+    pub fn tenant_id_for_slug(&self, slug: &str) -> AppResult<Uuid> {
+        Ok(self.get_by_slug(slug)?.id)
+    }
+
+    fn load<F>(&self, loader: F) -> AppResult<Tenant>
+    where
+        F: FnOnce(&mut PgConnection) -> AppResult<Tenant>,
+    {
+        let mut conn = self
+            .pool
+            .get()
+            .map_err(|err| AppError::internal(format!("database pool error: {err}")))?;
+        let tenant = loader(&mut conn)?;
+        Ok(tenant)
+    }
+}
+
+pub fn apply_tenant_guc(conn: &mut PgConnection, tenant_id: Uuid) -> AppResult<()> {
+    diesel::sql_query("SELECT set_config('papercrate.tenant_id', $1, true)")
+        .bind::<Text, _>(tenant_id.to_string())
+        .execute(conn)
+        .map(|_| ())
+        .map_err(AppError::from)
+}
+
+pub struct TenantContext {
+    pub tenant: Tenant,
+}
+
+#[async_trait]
+impl FromRequestParts<AppState> for TenantContext {
+    type Rejection = AppError;
+
+    async fn from_request_parts(
+        _parts: &mut Parts,
+        state: &AppState,
+    ) -> Result<Self, Self::Rejection> {
+        let tenant = state
+            .tenants
+            .get_by_slug(&state.config.default_tenant_slug)?;
+        Ok(Self { tenant })
+    }
+}

backend/src/utils/bootstrap.rs

@@ -0,0 +1,14 @@
+use std::sync::Arc;
+
+use anyhow::Result;
+
+use crate::{config::AppConfig, state::AppState, utils::tracing::init_tracing};
+
+/// Initialize tracing, load configuration, and build the shared `AppState`.
+/// Optionally override the connection pool size for lightweight components.
+pub async fn init_component(name: &str, pool_override: Option<u32>) -> Result<Arc<AppState>> {
+    init_tracing("info");
+    let config = AppConfig::load_and_log(name)?;
+    let state = AppState::initialize(config, pool_override).await?;
+    Ok(Arc::new(state))
+}

backend/src/utils/db.rs

@@ -0,0 +1,59 @@
+use diesel::{pg::PgConnection, result::Error as DieselError};
+use uuid::Uuid;
+
+use crate::{
+    error::{AppError, AppResult},
+    state::AppState,
+};
+
+pub trait EnsureEntity<T> {
+    fn one(self) -> AppResult<T>;
+    fn maybe(self) -> AppResult<Option<T>>;
+}
+
+impl<T> EnsureEntity<T> for Result<T, DieselError> {
+    fn one(self) -> AppResult<T> {
+        self.map_err(AppError::from)
+    }
+
+    fn maybe(self) -> AppResult<Option<T>> {
+        match self {
+            Ok(value) => Ok(Some(value)),
+            Err(DieselError::NotFound) => Ok(None),
+            Err(err) => Err(AppError::from(err)),
+        }
+    }
+}
+
+impl AppState {
+    pub fn with_tenant_conn<F, T>(&self, tenant_id: Uuid, f: F) -> AppResult<T>
+    where
+        F: FnOnce(&mut PgConnection) -> AppResult<T>,
+    {
+        let mut conn = self.db_for_tenant(tenant_id)?;
+        f(&mut conn)
+    }
+}
+
+pub fn validate_bulk_ids(ids: &mut Vec<Uuid>, label: &str) -> AppResult<()> {
+    if ids.is_empty() {
+        return Err(AppError::bad_request(format!("{label} must not be empty")));
+    }
+    ids.sort_unstable();
+    ids.dedup();
+    Ok(())
+}
+
+pub trait IntoJsonResponse<T> {
+    fn into_json(self) -> AppResult<axum::Json<T>>;
+}
+
+impl<T> IntoJsonResponse<T> for T {
+    fn into_json(self) -> AppResult<axum::Json<T>> {
+        Ok(axum::Json(self))
+    }
+}
+
+pub fn no_content() -> AppResult<axum::http::StatusCode> {
+    Ok(axum::http::StatusCode::NO_CONTENT)
+}

backend/src/utils/http.rs

@@ -0,0 +1,22 @@
+use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};
+
+/// Build an inline `Content-Disposition` header value for a given filename.
+pub fn inline_content_disposition(filename: &str) -> Option<String> {
+    if filename.is_empty() {
+        return None;
+    }
+
+    let sanitized: String = filename
+        .chars()
+        .map(|ch| match ch {
+            '"' | '\\' => '_',
+            _ => ch,
+        })
+        .collect();
+    let encoded = utf8_percent_encode(&sanitized, NON_ALPHANUMERIC);
+
+    Some(format!(
+        "inline; filename=\"{}\"; filename*=UTF-8''{}",
+        sanitized, encoded
+    ))
+}

backend/src/utils/json.rs

@@ -0,0 +1,16 @@
+use serde_json::Value;
+
+pub enum NullableValue {
+    Omitted,
+    Null,
+    String(String),
+}
+
+pub fn classify_nullable(optional_value: Option<&Value>) -> Result<NullableValue, String> {
+    match optional_value {
+        None => Ok(NullableValue::Omitted),
+        Some(Value::Null) => Ok(NullableValue::Null),
+        Some(Value::String(s)) => Ok(NullableValue::String(s.to_owned())),
+        Some(other) => Err(format!("expected string or null, got {other}")),
+    }
+}

backend/src/utils/mod.rs

@@ -0,0 +1,8 @@
+pub mod bootstrap;
+pub mod db;
+pub mod http;
+pub mod json;
+pub mod storage_paths;
+pub mod time;
+pub mod tracing;
+pub mod validation;

backend/src/utils/storage_paths.rs

@@ -0,0 +1,115 @@
+//! Document storage path helpers.
+//!
+//! NOTE: The path layout produced here is part of the durable storage contract.
+//! External systems (presigned URLs, lifecycle jobs, migrations) expect the
+//! `documents/{document_id}/...` structure to remain stable. Coordinate before
+//! changing any of these helpers to avoid breaking compatibility with existing
+//! objects.
+
+use uuid::Uuid;
+
+const DOCUMENTS_PREFIX: &str = "documents";
+
+/// Returns the root prefix for all objects belonging to a document.
+pub fn document_prefix(document_id: Uuid) -> String {
+    format!("{DOCUMENTS_PREFIX}/{document_id}")
+}
+
+/// Returns the prefix for a specific document version (without the object id).
+pub fn document_version_prefix(document_id: Uuid, version_number: i32) -> String {
+    format!("{}/v{}", document_prefix(document_id), version_number)
+}
+
+/// Returns the storage key for a stored document version blob.
+pub fn document_version_object_key(
+    document_id: Uuid,
+    version_number: i32,
+    version_id: Uuid,
+) -> String {
+    format!(
+        "{}/{}",
+        document_version_prefix(document_id, version_number),
+        version_id
+    )
+}
+
+fn document_asset_prefix(document_id: Uuid, version_number: i32) -> String {
+    format!(
+        "{}/assets",
+        document_version_prefix(document_id, version_number)
+    )
+}
+
+fn document_asset_type_prefix(document_id: Uuid, version_number: i32, asset_type: &str) -> String {
+    format!(
+        "{}/{}",
+        document_asset_prefix(document_id, version_number),
+        asset_type
+    )
+}
+
+/// Returns the storage prefix under which the asset objects for a type/id pair live.
+pub fn document_asset_object_prefix(
+    document_id: Uuid,
+    version_number: i32,
+    asset_type: &str,
+    asset_id: Uuid,
+) -> String {
+    format!(
+        "{}/{}",
+        document_asset_type_prefix(document_id, version_number, asset_type),
+        asset_id
+    )
+}
+
+/// Returns the full storage key for a specific asset object (ordinal).
+pub fn document_asset_object_key(
+    document_id: Uuid,
+    version_number: i32,
+    asset_type: &str,
+    asset_id: Uuid,
+    ordinal: i32,
+) -> String {
+    format!(
+        "{}/{}",
+        document_asset_object_prefix(document_id, version_number, asset_type, asset_id),
+        ordinal
+    )
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn generates_expected_paths() {
+        let document_id = Uuid::nil();
+        let version_id = Uuid::nil();
+        let asset_id = Uuid::nil();
+
+        assert_eq!(
+            document_prefix(document_id),
+            format!("documents/{document_id}")
+        );
+
+        assert_eq!(
+            document_version_prefix(document_id, 3),
+            format!("documents/{document_id}/v3")
+        );
+
+        assert_eq!(
+            document_version_object_key(document_id, 3, version_id),
+            format!("documents/{document_id}/v3/{version_id}")
+        );
+
+        assert_eq!(
+            document_asset_object_prefix(document_id, 3, "preview", asset_id),
+            format!("documents/{document_id}/v3/assets/preview/{asset_id}")
+        );
+
+        assert_eq!(
+            document_asset_object_key(document_id, 3, "preview", asset_id, 2),
+            format!("documents/{document_id}/v3/assets/preview/{asset_id}/2")
+        );
+    }
+}

backend/src/utils/time.rs

@@ -0,0 +1,13 @@
+use chrono::{DateTime, NaiveDateTime, Utc};
+
+/// Format a timestamp as RFC3339 using UTC.
+pub fn to_iso(dt: NaiveDateTime) -> String {
+    DateTime::<Utc>::from_naive_utc_and_offset(dt, Utc).to_rfc3339()
+}
+
+/// Format a timestamp for HTTP headers (RFC 7231 date).
+pub fn to_http_date(dt: NaiveDateTime) -> String {
+    DateTime::<Utc>::from_naive_utc_and_offset(dt, Utc)
+        .format("%a, %d %b %Y %H:%M:%S GMT")
+        .to_string()
+}

backend/src/utils/tracing.rs

@@ -0,0 +1,14 @@
+use tracing_subscriber::EnvFilter;
+
+/// Initialize tracing with an optional default level.
+///
+/// Falls back to `default_level` when `RUST_LOG` is not provided.
+pub fn init_tracing(default_level: &str) {
+    let filter =
+        EnvFilter::try_from_default_env().unwrap_or_else(|_| EnvFilter::new(default_level));
+    tracing_subscriber::fmt()
+        .with_env_filter(filter)
+        .with_target(false)
+        .compact()
+        .init();
+}

backend/src/utils/validation.rs

@@ -0,0 +1,10 @@
+use crate::error::{AppError, AppResult};
+
+/// Ensure an entity exists, returning a bad request error when it does not.
+pub fn ensure_exists(exists: bool, entity: &str) -> AppResult<()> {
+    if exists {
+        Ok(())
+    } else {
+        Err(AppError::bad_request(format!("{entity} does not exist")))
+    }
+}

backend/src/workers/analyze.rs

@@ -8,11 +8,13 @@ use tokio::task;
 use tracing::{error, warn};
 use uuid::Uuid;
 
+use super::ocr::{document_is_pdf, OCR_TEXT_ASSET_TYPE};
 use crate::{
-    jobs::{enqueue_job, JOB_ANALYZE_DOCUMENT, JOB_GENERATE_THUMBNAILS},
+    jobs::{enqueue_job, JOB_ANALYZE_DOCUMENT, JOB_GENERATE_OCR_TEXT, JOB_GENERATE_THUMBNAILS},
-    models::{Document, DocumentVersion},
+    models::{Document, DocumentAsset, DocumentVersion},
-    schema::{document_versions, documents},
+    schema::{document_assets, document_versions, documents},
     state::AppState,
+    storage::TenantStorage,
 };
 
 use super::{JobExecution, JobHandler};
@@ -39,7 +41,12 @@ impl JobHandler for AnalyzeDocumentJob {
         JOB_ANALYZE_DOCUMENT
     }
 
-    async fn handle(&self, state: Arc<AppState>, job: crate::models::Job) -> JobExecution {
+    async fn handle(
+        &self,
+        state: Arc<AppState>,
+        job: crate::models::Job,
+        _storage: TenantStorage,
+    ) -> JobExecution {
         let payload: AnalyzePayload = match serde_json::from_value(job.payload.clone()) {
             Ok(payload) => payload,
             Err(err) => {
@@ -50,7 +57,9 @@ impl JobHandler for AnalyzeDocumentJob {
         };
 
         let state_clone = state.clone();
-        match task::spawn_blocking(move || analyze_document(state_clone, payload)).await {
+        let tenant_id = job.tenant_id;
+        match task::spawn_blocking(move || analyze_document(state_clone, tenant_id, payload)).await
+        {
             Ok(Ok(execution)) => execution,
             Ok(Err(err)) => {
                 warn!(job_id = %job.id, error = %err, "analyze job will retry");
@@ -70,8 +79,14 @@ impl JobHandler for AnalyzeDocumentJob {
     }
 }
 
-fn analyze_document(state: Arc<AppState>, payload: AnalyzePayload) -> Result<JobExecution, String> {
+fn analyze_document(
-    let mut conn = state.db().map_err(|err| format!("{err:?}"))?;
+    state: Arc<AppState>,
+    tenant_id: Uuid,
+    payload: AnalyzePayload,
+) -> Result<JobExecution, String> {
+    let mut conn = state
+        .db_for_tenant(tenant_id)
+        .map_err(|err| format!("{err:?}"))?;
 
     let version: DocumentVersion = document_versions::table
         .find(payload.document_version_id)
@@ -87,7 +102,20 @@ fn analyze_document(state: Arc<AppState>, payload: AnalyzePayload) -> Result<Job
         .first(&mut conn)
         .map_err(|err| format!("{err:?}"))?;
 
+    let tenant_id = document.tenant_id;
+
     let (supported, reason) = determine_thumbnail_support(&document);
+    let ocr_supported = document_is_pdf(&document);
+
+    let existing_ocr: Option<DocumentAsset> = document_assets::table
+        .filter(document_assets::document_version_id.eq(payload.document_version_id))
+        .filter(document_assets::asset_type.eq(OCR_TEXT_ASSET_TYPE))
+        .filter(document_assets::tenant_id.eq(tenant_id))
+        .first(&mut conn)
+        .optional()
+        .map_err(|err| format!("{err:?}"))?;
+
+    let skip_ocr = existing_ocr.is_some() && !payload.force;
 
     let mut summary_map = match version.operations_summary {
         Value::Object(map) => map,
@@ -100,6 +128,16 @@ fn analyze_document(state: Arc<AppState>, payload: AnalyzePayload) -> Result<Job
         summary_map.remove("thumbnail_reason");
     }
 
+    summary_map.insert("ocr_supported".to_string(), Value::Bool(ocr_supported));
+    if ocr_supported {
+        summary_map.remove("ocr_reason");
+    } else {
+        summary_map.insert(
+            "ocr_reason".to_string(),
+            Value::String("document is not a PDF".into()),
+        );
+    }
+
     diesel::update(document_versions::table.find(version.id))
         .set(document_versions::operations_summary.eq(Value::Object(summary_map)))
         .execute(&mut conn)
@@ -108,6 +146,7 @@ fn analyze_document(state: Arc<AppState>, payload: AnalyzePayload) -> Result<Job
     if supported {
         let enqueue_result = enqueue_job(
             &mut conn,
+            tenant_id,
             JOB_GENERATE_THUMBNAILS,
             json!({
                 "document_id": payload.document_id,
@@ -122,6 +161,24 @@ fn analyze_document(state: Arc<AppState>, payload: AnalyzePayload) -> Result<Job
         }
     }
 
+    if ocr_supported && !skip_ocr {
+        let enqueue_result = enqueue_job(
+            &mut conn,
+            tenant_id,
+            JOB_GENERATE_OCR_TEXT,
+            json!({
+                "document_id": payload.document_id,
+                "document_version_id": payload.document_version_id,
+                "force": payload.force,
+            }),
+            None,
+        );
+
+        if let Err(err) = enqueue_result {
+            return Err(err.to_string());
+        }
+    }
+
     Ok(JobExecution::Success)
 }
 

backend/src/workers/index.rs

@@ -0,0 +1,238 @@
+use std::sync::Arc;
+use std::time::Duration;
+
+use async_trait::async_trait;
+use diesel::prelude::*;
+use reqwest::Client;
+use serde::Deserialize;
+use serde_json::json;
+use tokio::task;
+use tracing::{error, warn};
+use uuid::Uuid;
+
+use crate::{
+    jobs::JOB_INDEX_DOCUMENT_TEXT,
+    models::{Document, DocumentVersion},
+    schema::{document_asset_objects, document_assets, document_versions, documents},
+    state::AppState,
+    storage::TenantStorage,
+};
+
+use super::{ocr::OCR_TEXT_ASSET_TYPE, JobExecution, JobHandler};
+
+#[derive(Debug, Deserialize)]
+struct IndexPayload {
+    document_id: Uuid,
+    document_version_id: Uuid,
+}
+
+pub struct IndexDocumentTextJob;
+
+impl IndexDocumentTextJob {
+    pub fn new() -> Self {
+        Self
+    }
+}
+
+#[async_trait]
+impl JobHandler for IndexDocumentTextJob {
+    fn job_type(&self) -> &'static str {
+        JOB_INDEX_DOCUMENT_TEXT
+    }
+
+    async fn handle(
+        &self,
+        state: Arc<AppState>,
+        job: crate::models::Job,
+        storage: TenantStorage,
+    ) -> JobExecution {
+        let payload: IndexPayload = match serde_json::from_value(job.payload.clone()) {
+            Ok(payload) => payload,
+            Err(err) => {
+                return JobExecution::Failed {
+                    error: format!("invalid index payload: {err}"),
+                }
+            }
+        };
+
+        let quickwit_endpoint = match &state.config.quickwit_endpoint {
+            Some(endpoint) => endpoint.clone(),
+            None => {
+                return JobExecution::Failed {
+                    error: "quickwit endpoint missing".into(),
+                };
+            }
+        };
+
+        let tenant = match state.tenants.get_by_id(job.tenant_id) {
+            Ok(tenant) => tenant,
+            Err(err) => {
+                warn!(job_id = %job.id, error = ?err, "failed to load tenant for indexing");
+                return JobExecution::Retry {
+                    delay: Duration::from_secs(30),
+                    error: format!("failed to load tenant: {err:?}"),
+                };
+            }
+        };
+
+        let quickwit_index = match tenant.quickwit_index.clone() {
+            Some(index) => index,
+            None => {
+                return JobExecution::Failed {
+                    error: "tenant quickwit index not configured".into(),
+                };
+            }
+        };
+
+        let client = Client::new();
+
+        let state_clone = state.clone();
+        let context = match task::spawn_blocking(move || load_context(state_clone, &payload)).await
+        {
+            Ok(Ok(ctx)) => ctx,
+            Ok(Err(err)) => {
+                warn!(job_id = %job.id, error = %err, "index job will retry");
+                return JobExecution::Retry {
+                    delay: Duration::from_secs(30),
+                    error: err,
+                };
+            }
+            Err(join_err) => {
+                error!(job_id = %job.id, error = %join_err, "index task panicked");
+                return JobExecution::Retry {
+                    delay: Duration::from_secs(60),
+                    error: format!("worker panicked: {join_err}"),
+                };
+            }
+        };
+
+        if context.text_s3_key.is_none() {
+            warn!(job_id = %job.id, "missing OCR text asset; failing indexing job");
+            return JobExecution::Failed {
+                error: "missing OCR text asset".into(),
+            };
+        }
+
+        let s3_key = context.text_s3_key.unwrap();
+        let text = match storage.get_object(&s3_key).await {
+            Ok(bytes) => match String::from_utf8(bytes) {
+                Ok(text) => text,
+                Err(err) => {
+                    warn!(job_id = %job.id, error = %err, "ocr text not valid UTF-8");
+                    return JobExecution::Failed {
+                        error: "ocr text not valid UTF-8".into(),
+                    };
+                }
+            },
+            Err(err) => {
+                warn!(job_id = %job.id, error = %err, "failed to download ocr text");
+                return JobExecution::Retry {
+                    delay: Duration::from_secs(30),
+                    error: err.to_string(),
+                };
+            }
+        };
+
+        if text.trim().is_empty() {
+            warn!(job_id = %job.id, "ocr text empty; skipping");
+            return JobExecution::Failed {
+                error: "ocr text empty".into(),
+            };
+        }
+
+        let client = client;
+        let url = format!(
+            "{}/api/v1/{}/ingest?commit=auto",
+            quickwit_endpoint, quickwit_index
+        );
+        let payload = json!({
+            "document_id": context.document.id,
+            "version_id": context.version.id,
+            "tenant_id": job.tenant_id,
+            "title": context.document.title.to_lowercase(),
+            "text": text.to_lowercase()
+        });
+
+        let body = serde_json::to_string(&payload).unwrap();
+
+        match client
+            .post(&url)
+            .header("content-type", "application/x-ndjson")
+            .body(format!("{}\n", body))
+            .send()
+            .await
+        {
+            Ok(response) => {
+                if response.status().is_success() {
+                    JobExecution::Success
+                } else {
+                    let status = response.status();
+                    let body = response.text().await.unwrap_or_default();
+                    warn!(job_id = %job.id, %status, %body, "quickwit ingest failed");
+                    JobExecution::Retry {
+                        delay: Duration::from_secs(30),
+                        error: format!("quickwit ingest failed with status {status}"),
+                    }
+                }
+            }
+            Err(err) => {
+                warn!(job_id = %job.id, error = %err, "quickwit request failed");
+                JobExecution::Retry {
+                    delay: Duration::from_secs(30),
+                    error: err.to_string(),
+                }
+            }
+        }
+    }
+}
+
+struct IndexContext {
+    document: Document,
+    version: DocumentVersion,
+    text_s3_key: Option<String>,
+}
+
+fn load_context(state: Arc<AppState>, payload: &IndexPayload) -> Result<IndexContext, String> {
+    let mut base_conn = state.db_unscoped().map_err(|err| format!("{err:?}"))?;
+
+    let version: DocumentVersion = document_versions::table
+        .find(payload.document_version_id)
+        .first(&mut base_conn)
+        .map_err(|err| format!("{err:?}"))?;
+
+    if version.document_id != payload.document_id {
+        return Err("document/version mismatch".into());
+    }
+
+    let document: Document = documents::table
+        .find(payload.document_id)
+        .first(&mut base_conn)
+        .map_err(|err| format!("{err:?}"))?;
+
+    let tenant_id = document.tenant_id;
+    drop(base_conn);
+
+    let mut conn = state
+        .db_for_tenant(tenant_id)
+        .map_err(|err| format!("{err:?}"))?;
+
+    let text_s3_key: Option<String> = document_asset_objects::table
+        .inner_join(
+            document_assets::table.on(document_asset_objects::asset_id.eq(document_assets::id)),
+        )
+        .filter(document_assets::document_version_id.eq(payload.document_version_id))
+        .filter(document_assets::asset_type.eq(OCR_TEXT_ASSET_TYPE))
+        .filter(document_assets::tenant_id.eq(tenant_id))
+        .filter(document_asset_objects::ordinal.eq(1))
+        .filter(document_asset_objects::tenant_id.eq(tenant_id))
+        .select(document_asset_objects::s3_key)
+        .first(&mut conn)
+        .optional()
+        .map_err(|err| format!("{err:?}"))?;
+
+    Ok(IndexContext {
+        document,
+        version,
+        text_s3_key,
+    })
+}

backend/src/workers/mod.rs

@@ -8,9 +8,12 @@ use crate::{
     jobs::{mark_job_failed, mark_job_succeeded, reserve_job, retry_job_after, JobQueueError},
     models::Job,
     state::AppState,
+    storage::TenantStorage,
 };
 
 pub mod analyze;
+pub mod index;
+pub mod ocr;
 pub mod thumbnails;
 
 #[derive(Debug)]
@@ -23,7 +26,7 @@ pub enum JobExecution {
 #[async_trait]
 pub trait JobHandler: Send + Sync {
     fn job_type(&self) -> &'static str;
-    async fn handle(&self, state: Arc<AppState>, job: Job) -> JobExecution;
+    async fn handle(&self, state: Arc<AppState>, job: Job, storage: TenantStorage) -> JobExecution;
 }
 
 pub struct Worker {
@@ -69,7 +72,7 @@ impl Worker {
             return Ok(false);
         }
 
-        let mut conn = match self.state.db() {
+        let mut conn = match self.state.db_unscoped() {
             Ok(conn) => conn,
             Err(err) => {
                 error!(?err, "failed to obtain database connection in worker");
@@ -82,10 +85,22 @@ impl Worker {
 
         if let Some(job) = job_opt {
             if let Some(handler) = self.handlers.get(job.job_type.as_str()) {
-                let result = handler.handle(self.state.clone(), job.clone()).await;
+                let execution = match self.state.storage_for_tenant(job.tenant_id) {
-                match result {
+                    Ok(storage) => {
+                        handler
+                            .handle(self.state.clone(), job.clone(), storage)
+                            .await
+                    }
+                    Err(err) => {
+                        error!(job_id = %job.id, error = ?err, "failed to load tenant storage for job");
+                        JobExecution::Failed {
+                            error: format!("tenant storage unavailable: {err:?}"),
+                        }
+                    }
+                };
+                match execution {
                     JobExecution::Success => {
-                        if let Ok(mut conn) = self.state.db() {
+                        if let Ok(mut conn) = self.state.db_unscoped() {
                             mark_job_succeeded(&mut conn, job.id)?;
                             info!(job_id = %job.id, job_type = %job.job_type, "job completed successfully");
                         } else {
@@ -94,7 +109,7 @@ impl Worker {
                     }
                     JobExecution::Retry { delay, error } => {
                         warn!(job_id = %job.id, job_type = %job.job_type, %error, "job will retry");
-                        if let Ok(mut conn) = self.state.db() {
+                        if let Ok(mut conn) = self.state.db_unscoped() {
                             retry_job_after(&mut conn, job.id, delay, &error)?;
                         } else {
                             error!("failed to requeue job for retry due to pool error");
@@ -102,7 +117,7 @@ impl Worker {
                     }
                     JobExecution::Failed { error } => {
                         error!(job_id = %job.id, job_type = %job.job_type, %error, "job failed");
-                        if let Ok(mut conn) = self.state.db() {
+                        if let Ok(mut conn) = self.state.db_unscoped() {
                             mark_job_failed(&mut conn, job.id, &error)?;
                         } else {
                             error!("failed to mark job failed due to pool error");
@@ -111,7 +126,7 @@ impl Worker {
                 }
             } else {
                 error!(job_type = %job.job_type, "no handler registered for job type");
-                if let Ok(mut conn) = self.state.db() {
+                if let Ok(mut conn) = self.state.db_unscoped() {
                     mark_job_failed(&mut conn, job.id, "no handler registered")?;
                 } else {
                     error!("failed to mark job failed for missing handler due to pool error");
@@ -128,5 +143,7 @@ pub fn default_handlers() -> Vec<Arc<dyn JobHandler>> {
     vec![
         Arc::new(analyze::AnalyzeDocumentJob::new()),
         Arc::new(thumbnails::GenerateThumbnailsJob::new()),
+        Arc::new(ocr::GenerateOcrTextJob::new()),
+        Arc::new(index::IndexDocumentTextJob::new()),
     ]
 }

backend/src/workers/ocr.rs

@@ -0,0 +1,527 @@
+use std::{
+    fmt, fs,
+    io::{ErrorKind, Write},
+    process::Command,
+    sync::Arc,
+    time::Duration,
+};
+
+use async_trait::async_trait;
+use chrono::Utc;
+use diesel::{pg::upsert::excluded, prelude::*};
+use pdfium_render::prelude::*;
+use serde::Deserialize;
+use serde_json::json;
+use tempfile::NamedTempFile;
+use tokio::task;
+use tracing::{error, info, warn};
+use uuid::Uuid;
+
+use crate::{
+    jobs::{enqueue_job, JOB_GENERATE_OCR_TEXT, JOB_INDEX_DOCUMENT_TEXT},
+    models::{
+        Document, DocumentAsset, DocumentAssetObject, DocumentVersion, NewDocumentAsset,
+        NewDocumentAssetObject,
+    },
+    schema::{document_asset_objects, document_assets, document_versions, documents},
+    state::AppState,
+    storage::TenantStorage,
+    utils::storage_paths::document_asset_object_prefix,
+};
+
+use super::{JobExecution, JobHandler};
+
+pub const OCR_TEXT_ASSET_TYPE: &str = "ocr-text";
+const MIN_TEXT_LENGTH: usize = 50;
+
+#[derive(Clone, Debug, Deserialize)]
+struct OcrPayload {
+    document_id: Uuid,
+    document_version_id: Uuid,
+    #[serde(default)]
+    force: bool,
+}
+
+pub struct GenerateOcrTextJob;
+
+impl GenerateOcrTextJob {
+    pub fn new() -> Self {
+        Self
+    }
+}
+
+#[async_trait]
+impl JobHandler for GenerateOcrTextJob {
+    fn job_type(&self) -> &'static str {
+        JOB_GENERATE_OCR_TEXT
+    }
+
+    async fn handle(
+        &self,
+        state: Arc<AppState>,
+        job: crate::models::Job,
+        storage: TenantStorage,
+    ) -> JobExecution {
+        let payload: OcrPayload = match serde_json::from_value(job.payload.clone()) {
+            Ok(payload) => payload,
+            Err(err) => {
+                return JobExecution::Failed {
+                    error: format!("invalid OCR payload: {err}"),
+                }
+            }
+        };
+
+        let state_clone = state.clone();
+        let payload_clone = payload.clone();
+        let context =
+            match task::spawn_blocking(move || load_ocr_context(state_clone, &payload_clone)).await
+            {
+                Ok(Ok(ctx)) => ctx,
+                Ok(Err(err)) => {
+                    warn!(job_id = %job.id, error = %err, "ocr job will retry");
+                    return JobExecution::Retry {
+                        delay: Duration::from_secs(30),
+                        error: err,
+                    };
+                }
+                Err(join_err) => {
+                    error!(job_id = %job.id, error = %join_err, "ocr task panicked");
+                    return JobExecution::Retry {
+                        delay: Duration::from_secs(60),
+                        error: format!("worker panicked: {join_err}"),
+                    };
+                }
+            };
+
+        if context.skip {
+            info!(job_id = %job.id, "ocr already present; skipping");
+            return JobExecution::Success;
+        }
+
+        let bytes = match storage.get_object(&context.version.s3_key).await {
+            Ok(bytes) => bytes,
+            Err(err) => {
+                warn!(job_id = %job.id, error = %err, "failed to fetch document for ocr");
+                return JobExecution::Retry {
+                    delay: Duration::from_secs(30),
+                    error: err.to_string(),
+                };
+            }
+        };
+
+        let doc_meta = PdfDocumentMeta {
+            content_type: context.document.content_type.clone(),
+            original_name: context.document.original_name.clone(),
+        };
+
+        let generation =
+            match task::spawn_blocking(move || generate_ocr_text(&doc_meta, &bytes)).await {
+                Ok(result) => result,
+                Err(join_err) => {
+                    error!(job_id = %job.id, error = %join_err, "ocr text task panicked");
+                    return JobExecution::Retry {
+                        delay: Duration::from_secs(60),
+                        error: format!("worker panicked: {join_err}"),
+                    };
+                }
+            };
+
+        let Some(generation) = generation else {
+            warn!(job_id = %job.id, "no text extracted from document; failing job");
+            return JobExecution::Failed {
+                error: "no text extracted and OCR unavailable".into(),
+            };
+        };
+
+        if context.existing_asset.is_some() {
+            for object in &context.existing_objects {
+                if let Err(err) = storage.delete_object(&object.s3_key).await {
+                    warn!(job_id = %job.id, error = %err, s3_key = %object.s3_key, "failed to delete existing ocr asset object");
+                }
+            }
+        }
+
+        let asset_id = Uuid::new_v4();
+
+        let s3_key = document_asset_object_prefix(
+            context.document.id,
+            context.version.version_number,
+            OCR_TEXT_ASSET_TYPE,
+            asset_id,
+        );
+
+        if let Err(err) = storage
+            .put_object(
+                &s3_key,
+                generation.text.into_bytes(),
+                Some("text/plain".into()),
+                None,
+            )
+            .await
+        {
+            warn!(job_id = %job.id, error = %err, "failed to upload ocr text");
+            return JobExecution::Retry {
+                delay: Duration::from_secs(30),
+                error: err.to_string(),
+            };
+        }
+
+        let state_clone = state.clone();
+        match task::spawn_blocking(move || {
+            persist_ocr_metadata(state_clone, &context, asset_id, &s3_key, generation.source)
+        })
+        .await
+        {
+            Ok(Ok(())) => {
+                if let Err(err) = enqueue_index_job(&state, &payload) {
+                    warn!(job_id = %job.id, error = %err, "failed to enqueue index job");
+                }
+                JobExecution::Success
+            }
+            Ok(Err(err)) => {
+                warn!(job_id = %job.id, error = %err, "failed to persist ocr metadata");
+                JobExecution::Retry {
+                    delay: Duration::from_secs(30),
+                    error: err,
+                }
+            }
+            Err(join_err) => {
+                error!(job_id = %job.id, error = %join_err, "ocr metadata task panicked");
+                JobExecution::Retry {
+                    delay: Duration::from_secs(30),
+                    error: format!("metadata update panic: {join_err}"),
+                }
+            }
+        }
+    }
+}
+
+struct PdfDocumentMeta {
+    content_type: Option<String>,
+    original_name: String,
+}
+
+struct OcrContext {
+    document: Document,
+    version: DocumentVersion,
+    existing_asset: Option<DocumentAsset>,
+    existing_objects: Vec<DocumentAssetObject>,
+    skip: bool,
+}
+
+struct OcrGeneration {
+    text: String,
+    source: &'static str,
+}
+
+fn load_ocr_context(state: Arc<AppState>, payload: &OcrPayload) -> Result<OcrContext, String> {
+    let mut base_conn = state.db_unscoped().map_err(|err| format!("{err:?}"))?;
+
+    let version: DocumentVersion = document_versions::table
+        .find(payload.document_version_id)
+        .first(&mut base_conn)
+        .map_err(|err| format!("{err:?}"))?;
+
+    if version.document_id != payload.document_id {
+        return Err("document/version mismatch".into());
+    }
+
+    let document: Document = documents::table
+        .find(payload.document_id)
+        .first(&mut base_conn)
+        .map_err(|err| format!("{err:?}"))?;
+
+    let tenant_id = document.tenant_id;
+    drop(base_conn);
+
+    let mut conn = state
+        .db_for_tenant(tenant_id)
+        .map_err(|err| format!("{err:?}"))?;
+
+    let existing_asset: Option<DocumentAsset> = document_assets::table
+        .filter(document_assets::document_version_id.eq(payload.document_version_id))
+        .filter(document_assets::asset_type.eq(OCR_TEXT_ASSET_TYPE))
+        .filter(document_assets::tenant_id.eq(tenant_id))
+        .first(&mut conn)
+        .optional()
+        .map_err(|err| format!("{err:?}"))?;
+
+    let existing_objects: Vec<DocumentAssetObject> = if let Some(asset) = &existing_asset {
+        document_asset_objects::table
+            .filter(document_asset_objects::asset_id.eq(asset.id))
+            .filter(document_asset_objects::tenant_id.eq(tenant_id))
+            .order(document_asset_objects::ordinal.asc())
+            .load(&mut conn)
+            .map_err(|err| format!("{err:?}"))?
+    } else {
+        Vec::new()
+    };
+
+    let is_pdf = document_is_pdf(&document);
+    if !is_pdf {
+        return Ok(OcrContext {
+            document,
+            version,
+            existing_asset: existing_asset,
+            existing_objects,
+            skip: true,
+        });
+    }
+
+    let skip = existing_asset.is_some() && !payload.force;
+
+    Ok(OcrContext {
+        document,
+        version,
+        existing_asset,
+        existing_objects,
+        skip,
+    })
+}
+
+fn generate_ocr_text(meta: &PdfDocumentMeta, bytes: &[u8]) -> Option<OcrGeneration> {
+    if !document_meta_is_pdf(meta) {
+        return None;
+    }
+
+    if let Ok(text) = extract_pdf_text(bytes) {
+        if text.trim().chars().count() >= MIN_TEXT_LENGTH {
+            return Some(OcrGeneration {
+                text,
+                source: "pdf-text",
+            });
+        }
+    }
+
+    match run_ocr(bytes) {
+        Ok(Some(text)) => Some(OcrGeneration {
+            text,
+            source: "ocr",
+        }),
+        Ok(None) => None,
+        Err(OcrError::BinaryMissing) => {
+            warn!("ocrmypdf not installed; cannot perform OCR");
+            None
+        }
+        Err(err) => {
+            warn!(error = ?err, "ocr command failed");
+            None
+        }
+    }
+}
+
+fn extract_pdf_text(bytes: &[u8]) -> Result<String, String> {
+    let pdfium = Pdfium::default();
+    let document = pdfium
+        .load_pdf_from_byte_slice(bytes, None)
+        .map_err(|err| format!("load pdf: {err}"))?;
+
+    let mut combined = String::new();
+    let pages = document.pages();
+    for page_index in 0..pages.len() {
+        let page = pages
+            .get(page_index)
+            .map_err(|err| format!("load page {page_index}: {err}"))?;
+        if let Ok(page_text) = page.text() {
+            for segment in page_text.segments().iter() {
+                combined.push_str(&segment.text());
+                combined.push('\n');
+            }
+        };
+    }
+
+    Ok(combined)
+}
+
+#[derive(Debug)]
+enum OcrError {
+    BinaryMissing,
+    Failed(String),
+}
+
+impl fmt::Display for OcrError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            OcrError::BinaryMissing => write!(f, "ocrmypdf binary not found"),
+            OcrError::Failed(msg) => write!(f, "ocr failed: {msg}"),
+        }
+    }
+}
+
+fn run_ocr(bytes: &[u8]) -> Result<Option<String>, OcrError> {
+    let mut input = NamedTempFile::new().map_err(|err| OcrError::Failed(err.to_string()))?;
+    input
+        .write_all(bytes)
+        .map_err(|err| OcrError::Failed(err.to_string()))?;
+    input
+        .flush()
+        .map_err(|err| OcrError::Failed(err.to_string()))?;
+
+    let output_pdf = NamedTempFile::new().map_err(|err| OcrError::Failed(err.to_string()))?;
+    let sidecar = NamedTempFile::new().map_err(|err| OcrError::Failed(err.to_string()))?;
+
+    let status = Command::new("ocrmypdf")
+        .arg("--sidecar")
+        .arg(sidecar.path())
+        .arg("--skip-text")
+        .arg(input.path())
+        .arg(output_pdf.path())
+        .output();
+
+    match status {
+        Ok(output) => {
+            if !output.status.success() {
+                return Err(OcrError::Failed(format!(
+                    "ocrmypdf failed: exit={} stderr={}",
+                    output.status,
+                    String::from_utf8_lossy(&output.stderr)
+                )));
+            }
+
+            let text = fs::read_to_string(sidecar.path())
+                .map_err(|err| OcrError::Failed(err.to_string()))?;
+            if text.trim().chars().count() >= MIN_TEXT_LENGTH {
+                Ok(Some(text))
+            } else {
+                Ok(None)
+            }
+        }
+        Err(err) => {
+            if err.kind() == ErrorKind::NotFound {
+                Err(OcrError::BinaryMissing)
+            } else {
+                Err(OcrError::Failed(err.to_string()))
+            }
+        }
+    }
+}
+
+fn persist_ocr_metadata(
+    state: Arc<AppState>,
+    context: &OcrContext,
+    asset_id: Uuid,
+    s3_key: &str,
+    source: &'static str,
+) -> Result<(), String> {
+    let tenant_id = context.document.tenant_id;
+    let mut conn = state
+        .db_for_tenant(tenant_id)
+        .map_err(|err| format!("{err:?}"))?;
+
+    if let Some(existing_asset) = &context.existing_asset {
+        diesel::delete(document_assets::table.filter(document_assets::id.eq(existing_asset.id)))
+            .execute(&mut conn)
+            .map_err(|err| format!("{err:?}"))?;
+    }
+
+    let new_asset = NewDocumentAsset {
+        id: asset_id,
+        document_version_id: context.version.id,
+        asset_type: OCR_TEXT_ASSET_TYPE.to_string(),
+        mime_type: "text/plain".to_string(),
+        metadata: json!({
+            "generated_at": Utc::now().to_rfc3339(),
+            "source": source,
+        }),
+        cardinality: Some(1),
+        tenant_id,
+    };
+
+    diesel::insert_into(document_assets::table)
+        .values(&new_asset)
+        .on_conflict((
+            document_assets::document_version_id,
+            document_assets::asset_type,
+        ))
+        .do_update()
+        .set((
+            document_assets::mime_type.eq(excluded(document_assets::mime_type)),
+            document_assets::metadata.eq(excluded(document_assets::metadata)),
+            document_assets::cardinality.eq(excluded(document_assets::cardinality)),
+        ))
+        .execute(&mut conn)
+        .map_err(|err| format!("{err:?}"))?;
+
+    let existing_object_id: Option<Uuid> = document_asset_objects::table
+        .filter(document_asset_objects::asset_id.eq(asset_id))
+        .filter(document_asset_objects::ordinal.eq(1))
+        .filter(document_asset_objects::tenant_id.eq(tenant_id))
+        .select(document_asset_objects::id)
+        .first(&mut conn)
+        .optional()
+        .map_err(|err| format!("{err:?}"))?;
+
+    let object_id = existing_object_id.unwrap_or_else(Uuid::new_v4);
+
+    let new_object = NewDocumentAssetObject {
+        id: object_id,
+        asset_id,
+        ordinal: 1,
+        s3_key: s3_key.to_string(),
+        metadata: json!({}),
+        tenant_id,
+    };
+
+    diesel::insert_into(document_asset_objects::table)
+        .values(&new_object)
+        .on_conflict((
+            document_asset_objects::asset_id,
+            document_asset_objects::ordinal,
+        ))
+        .do_update()
+        .set((
+            document_asset_objects::s3_key.eq(excluded(document_asset_objects::s3_key)),
+            document_asset_objects::metadata.eq(excluded(document_asset_objects::metadata)),
+        ))
+        .execute(&mut conn)
+        .map_err(|err| format!("{err:?}"))?;
+
+    Ok(())
+}
+
+fn enqueue_index_job(state: &AppState, payload: &OcrPayload) -> Result<(), String> {
+    let mut base_conn = state.db_unscoped().map_err(|err| format!("{err:?}"))?;
+    let tenant_id: Uuid = documents::table
+        .find(payload.document_id)
+        .select(documents::tenant_id)
+        .first(&mut base_conn)
+        .map_err(|err| format!("{err:?}"))?;
+    drop(base_conn);
+
+    let mut conn = state
+        .db_for_tenant(tenant_id)
+        .map_err(|err| format!("{err:?}"))?;
+    enqueue_job(
+        &mut conn,
+        tenant_id,
+        JOB_INDEX_DOCUMENT_TEXT,
+        json!({
+            "document_id": payload.document_id,
+            "document_version_id": payload.document_version_id,
+        }),
+        None,
+    )
+    .map(|_| ())
+    .map_err(|err| err.to_string())
+}
+
+pub fn document_is_pdf(document: &Document) -> bool {
+    document_meta_is_pdf(&PdfDocumentMeta {
+        content_type: document.content_type.clone(),
+        original_name: document.original_name.clone(),
+    })
+}
+
+fn document_meta_is_pdf(meta: &PdfDocumentMeta) -> bool {
+    if let Some(content_type) = &meta.content_type {
+        if content_type.eq_ignore_ascii_case("application/pdf") {
+            return true;
+        }
+    }
+
+    meta.original_name
+        .rsplit('.')
+        .next()
+        .map(|ext| ext.eq_ignore_ascii_case("pdf"))
+        .unwrap_or(false)
+}

backend/src/workers/thumbnails.rs

@@ -1,30 +1,36 @@
-use std::{io::Cursor, panic, sync::Arc, time::Duration};
+use std::{convert::TryInto, io::Cursor, panic, sync::Arc, time::Duration};
 
 use async_trait::async_trait;
 use chrono::Utc;
 use diesel::{pg::upsert::excluded, prelude::*};
-use image::{
+use image::{GenericImageView, ImageFormat, ImageReader};
-    codecs::png::PngEncoder, ColorType, GenericImageView, ImageEncoder, ImageFormat, ImageReader,
-};
 use pdfium_render::prelude::*;
 use serde::Deserialize;
-use serde_json::json;
+use serde_json::{json, Map, Value};
 use tokio::task;
 use tracing::{error, info, warn};
 use uuid::Uuid;
 
 use crate::{
     jobs::JOB_GENERATE_THUMBNAILS,
-    models::{Document, DocumentAsset, DocumentVersion, NewDocumentAsset},
+    models::{
-    schema::{document_assets, document_versions, documents},
+        Document, DocumentAsset, DocumentAssetObject, DocumentVersion, NewDocumentAsset,
+        NewDocumentAssetObject,
+    },
+    schema::{document_asset_objects, document_assets, document_versions, documents},
     state::AppState,
+    storage::TenantStorage,
+    utils::storage_paths::document_asset_object_key,
 };
 
 use super::{analyze::determine_thumbnail_support, JobExecution, JobHandler};
 
 const THUMBNAIL_WIDTH: u32 = 512;
 const THUMBNAIL_HEIGHT: u32 = 512;
+const PREVIEW_WIDTH: u32 = THUMBNAIL_WIDTH * 4;
+const PREVIEW_HEIGHT: u32 = THUMBNAIL_HEIGHT * 4;
 const THUMBNAIL_ASSET_TYPE: &str = "thumbnail";
+const PREVIEW_ASSET_TYPE: &str = "preview";
 
 #[derive(Debug, Deserialize)]
 struct ThumbnailPayload {
@@ -48,7 +54,12 @@ impl JobHandler for GenerateThumbnailsJob {
         JOB_GENERATE_THUMBNAILS
     }
 
-    async fn handle(&self, state: Arc<AppState>, job: crate::models::Job) -> JobExecution {
+    async fn handle(
+        &self,
+        state: Arc<AppState>,
+        job: crate::models::Job,
+        storage: TenantStorage,
+    ) -> JobExecution {
         let payload: ThumbnailPayload = match serde_json::from_value(job.payload.clone()) {
             Ok(p) => p,
             Err(err) => {
@@ -84,7 +95,7 @@ impl JobHandler for GenerateThumbnailsJob {
             return JobExecution::Success;
         }
 
-        let bytes = match state.storage.get_object(&initial.version.s3_key).await {
+        let bytes = match storage.get_object(&initial.version.s3_key).await {
             Ok(bytes) => bytes,
             Err(err) => {
                 warn!(job_id = %job.id, error = %err, "thumbnail fetch failed; will retry");
@@ -95,32 +106,180 @@ impl JobHandler for GenerateThumbnailsJob {
             }
         };
 
-        let generation = match generate_thumbnail(&initial.document, &bytes) {
+        let generation = match generate_preview_and_thumbnail(&initial.document, &bytes) {
             Ok(result) => result,
             Err(err) => {
                 return JobExecution::Failed { error: err };
             }
         };
 
-        if let Err(err) = state
+        if let Some(page_count) = generation.page_count {
-            .storage
+            let state_clone = state.clone();
+            let document_id = initial.document.id;
+            let version_id = initial.version.id;
+            match task::spawn_blocking(move || {
+                persist_document_page_count(state_clone, document_id, version_id, page_count)
+            })
+            .await
+            {
+                Ok(Ok(())) => {}
+                Ok(Err(err)) => {
+                    warn!(
+                        job_id = %job.id,
+                        document_id = %document_id,
+                        version_id = %version_id,
+                        error = %err,
+                        "failed to update document page count metadata; retrying"
+                    );
+                    return JobExecution::Retry {
+                        delay: Duration::from_secs(30),
+                        error: err,
+                    };
+                }
+                Err(join_err) => {
+                    error!(
+                        job_id = %job.id,
+                        document_id = %document_id,
+                        version_id = %version_id,
+                        error = %join_err,
+                        "page count metadata task panicked"
+                    );
+                    return JobExecution::Retry {
+                        delay: Duration::from_secs(60),
+                        error: format!("metadata panic: {join_err}"),
+                    };
+                }
+            }
+        }
+
+        if initial.existing_preview.is_some() {
+            for object in &initial.existing_preview_objects {
+                if let Err(err) = storage.delete_object(&object.s3_key).await {
+                    warn!(
+                        job_id = %job.id,
+                        error = %err,
+                        s3_key = %object.s3_key,
+                        "failed to delete existing preview object"
+                    );
+                }
+            }
+        }
+
+        if initial.existing_thumbnail.is_some() {
+            for object in &initial.existing_thumbnail_objects {
+                if let Err(err) = storage.delete_object(&object.s3_key).await {
+                    warn!(
+                        job_id = %job.id,
+                        error = %err,
+                        s3_key = %object.s3_key,
+                        "failed to delete existing thumbnail object"
+                    );
+                }
+            }
+        }
+
+        let preview_asset_id = Uuid::new_v4();
+
+        let thumbnail_asset_id = Uuid::new_v4();
+
+        let mut preview_objects: Vec<AssetObjectPersistence> =
+            Vec::with_capacity(generation.preview.objects.len());
+        for (index, image) in generation.preview.objects.iter().enumerate() {
+            if index + 1 > i32::MAX as usize {
+                return JobExecution::Failed {
+                    error: "too many preview objects".to_string(),
+                };
+            }
+            let ordinal = (index + 1) as i32;
+            let s3_key = document_asset_object_key(
+                initial.document.id,
+                initial.version.version_number,
+                PREVIEW_ASSET_TYPE,
+                preview_asset_id,
+                ordinal,
+            );
+
+            if let Err(err) = storage
                 .put_object(
-                &generation.s3_key,
+                    &s3_key,
-                generation.image_bytes.clone(),
+                    image.image_bytes.clone(),
                     Some("image/png".into()),
+                    None,
                 )
                 .await
             {
-            warn!(job_id = %job.id, error = %err, "failed to upload thumbnail; retrying");
+                warn!(job_id = %job.id, error = %err, ordinal, "failed to upload preview; retrying");
                 return JobExecution::Retry {
                     delay: Duration::from_secs(30),
                     error: err.to_string(),
                 };
             }
 
+            preview_objects.push(AssetObjectPersistence {
+                ordinal,
+                s3_key,
+                width: image.width,
+                height: image.height,
+            });
+        }
+
+        let mut thumbnail_objects: Vec<AssetObjectPersistence> =
+            Vec::with_capacity(generation.thumbnail.objects.len());
+        for (index, image) in generation.thumbnail.objects.iter().enumerate() {
+            if index + 1 > i32::MAX as usize {
+                return JobExecution::Failed {
+                    error: "too many thumbnail objects".to_string(),
+                };
+            }
+            let ordinal = (index + 1) as i32;
+            let s3_key = document_asset_object_key(
+                initial.document.id,
+                initial.version.version_number,
+                THUMBNAIL_ASSET_TYPE,
+                thumbnail_asset_id,
+                ordinal,
+            );
+
+            if let Err(err) = storage
+                .put_object(
+                    &s3_key,
+                    image.image_bytes.clone(),
+                    Some("image/png".into()),
+                    None,
+                )
+                .await
+            {
+                warn!(job_id = %job.id, error = %err, ordinal, "failed to upload thumbnail; retrying");
+                return JobExecution::Retry {
+                    delay: Duration::from_secs(30),
+                    error: err.to_string(),
+                };
+            }
+
+            thumbnail_objects.push(AssetObjectPersistence {
+                ordinal,
+                s3_key,
+                width: image.width,
+                height: image.height,
+            });
+        }
+
+        let asset_persistences = vec![
+            AssetPersistence {
+                asset_type: PREVIEW_ASSET_TYPE,
+                asset_id: preview_asset_id,
+                objects: preview_objects,
+            },
+            AssetPersistence {
+                asset_type: THUMBNAIL_ASSET_TYPE,
+                asset_id: thumbnail_asset_id,
+                objects: thumbnail_objects,
+            },
+        ];
+
         let state_clone = state.clone();
         match task::spawn_blocking(move || {
-            persist_thumbnail_metadata(state_clone, &initial, &generation)
+            persist_assets_metadata(state_clone, &initial, &asset_persistences)
         })
         .await
         {
@@ -148,21 +307,47 @@ impl JobHandler for GenerateThumbnailsJob {
 struct ThumbnailContext {
     document: Document,
     version: DocumentVersion,
+    existing_thumbnail: Option<DocumentAsset>,
+    existing_thumbnail_objects: Vec<DocumentAssetObject>,
+    existing_preview: Option<DocumentAsset>,
+    existing_preview_objects: Vec<DocumentAssetObject>,
     skip: bool,
 }
 
-struct GeneratedThumbnail {
+struct GeneratedImage {
     image_bytes: Vec<u8>,
     width: Option<i32>,
     height: Option<i32>,
+}
+
+struct GeneratedAsset {
+    objects: Vec<GeneratedImage>,
+}
+
+struct GeneratedAssets {
+    thumbnail: GeneratedAsset,
+    preview: GeneratedAsset,
+    page_count: Option<u32>,
+}
+
+struct AssetObjectPersistence {
+    ordinal: i32,
     s3_key: String,
+    width: Option<i32>,
+    height: Option<i32>,
+}
+
+struct AssetPersistence {
+    asset_type: &'static str,
+    asset_id: Uuid,
+    objects: Vec<AssetObjectPersistence>,
 }
 
 fn load_thumbnail_context(
     state: Arc<AppState>,
     payload: &ThumbnailPayload,
 ) -> Result<ThumbnailContext, String> {
-    let mut conn = state.db().map_err(|err| format!("{err:?}"))?;
+    let mut conn = state.db_unscoped().map_err(|err| format!("{err:?}"))?;
 
     let version: DocumentVersion = document_versions::table
         .find(payload.document_version_id)
@@ -178,76 +363,144 @@ fn load_thumbnail_context(
         .first(&mut conn)
         .map_err(|err| format!("{err:?}"))?;
 
-    let existing: Option<DocumentAsset> = document_assets::table
+    let tenant_id = document.tenant_id;
+
+    let existing_assets: Vec<DocumentAsset> = document_assets::table
         .filter(document_assets::document_version_id.eq(payload.document_version_id))
-        .filter(document_assets::asset_type.eq(THUMBNAIL_ASSET_TYPE))
+        .filter(document_assets::asset_type.eq_any(vec![
-        .first(&mut conn)
+            THUMBNAIL_ASSET_TYPE.to_string(),
-        .optional()
+            PREVIEW_ASSET_TYPE.to_string(),
+        ]))
+        .filter(document_assets::tenant_id.eq(tenant_id))
+        .load(&mut conn)
         .map_err(|err| format!("{err:?}"))?;
 
+    let mut existing_thumbnail = None;
+    let mut existing_thumbnail_objects: Vec<DocumentAssetObject> = Vec::new();
+    let mut existing_preview = None;
+    let mut existing_preview_objects: Vec<DocumentAssetObject> = Vec::new();
+    for asset in existing_assets {
+        match asset.asset_type.as_str() {
+            THUMBNAIL_ASSET_TYPE => {
+                existing_thumbnail_objects = document_asset_objects::table
+                    .filter(document_asset_objects::asset_id.eq(asset.id))
+                    .filter(document_asset_objects::tenant_id.eq(tenant_id))
+                    .order(document_asset_objects::ordinal.asc())
+                    .load(&mut conn)
+                    .map_err(|err| format!("{err:?}"))?;
+                existing_thumbnail = Some(asset);
+            }
+            PREVIEW_ASSET_TYPE => {
+                existing_preview_objects = document_asset_objects::table
+                    .filter(document_asset_objects::asset_id.eq(asset.id))
+                    .filter(document_asset_objects::tenant_id.eq(tenant_id))
+                    .order(document_asset_objects::ordinal.asc())
+                    .load(&mut conn)
+                    .map_err(|err| format!("{err:?}"))?;
+                existing_preview = Some(asset);
+            }
+            _ => {}
+        }
+    }
+
     let (supported, _) = determine_thumbnail_support(&document);
     if !supported {
         return Err("thumbnail generation not supported for this document".into());
     }
 
-    let skip = existing.is_some() && !payload.force;
+    let expected_cardinality = expected_asset_cardinality(&document, &version);
+    let preview_cardinality = existing_preview
+        .as_ref()
+        .and_then(|asset| asset.cardinality)
+        .unwrap_or_else(|| existing_preview_objects.len() as i32);
+    let thumbnail_cardinality = existing_thumbnail
+        .as_ref()
+        .and_then(|asset| asset.cardinality)
+        .unwrap_or_else(|| existing_thumbnail_objects.len() as i32);
+
+    let needs_regeneration = preview_cardinality < expected_cardinality
+        || thumbnail_cardinality < expected_cardinality
+        || (existing_preview_objects.len() as i32) < expected_cardinality
+        || (existing_thumbnail_objects.len() as i32) < expected_cardinality;
+
+    let skip = existing_thumbnail.is_some()
+        && existing_preview.is_some()
+        && !payload.force
+        && !needs_regeneration;
 
     Ok(ThumbnailContext {
         document,
         version,
+        existing_thumbnail,
+        existing_thumbnail_objects,
+        existing_preview,
+        existing_preview_objects,
         skip,
     })
 }
 
-fn generate_thumbnail(document: &Document, bytes: &[u8]) -> Result<GeneratedThumbnail, String> {
+fn generate_preview_and_thumbnail(
-    let is_pdf = document
+    document: &Document,
-        .content_type
+    bytes: &[u8],
-        .as_deref()
+) -> Result<GeneratedAssets, String> {
-        .map(|mime| mime == "application/pdf")
+    let is_pdf = document_is_pdf(document);
-        .unwrap_or_else(|| {
-            document
-                .original_name
-                .rsplit('.')
-                .next()
-                .map(|ext| ext.eq_ignore_ascii_case("pdf"))
-                .unwrap_or(false)
-        });
 
-    let (png_bytes, width, height) = if is_pdf {
+    if is_pdf {
-        generate_pdf_thumbnail(bytes)?
+        let pdf_assets = generate_pdf_assets(bytes)?;
-    } else {
+        Ok(GeneratedAssets {
-        generate_image_thumbnail(bytes)?
+            preview: pdf_assets.preview,
-    };
+            thumbnail: pdf_assets.thumbnail,
-
+            page_count: Some(pdf_assets.page_count),
-    let s3_key = format!("thumbnails/{}/{}.png", document.id, Uuid::new_v4());
-
-    Ok(GeneratedThumbnail {
-        image_bytes: png_bytes,
-        width,
-        height,
-        s3_key,
         })
+    } else {
+        let (preview, thumbnail) = generate_image_assets(bytes)?;
+        Ok(GeneratedAssets {
+            preview,
+            thumbnail,
+            page_count: None,
+        })
+    }
 }
 
-fn generate_image_thumbnail(bytes: &[u8]) -> Result<(Vec<u8>, Option<i32>, Option<i32>), String> {
+fn generate_image_assets(bytes: &[u8]) -> Result<(GeneratedAsset, GeneratedAsset), String> {
     let reader = ImageReader::new(Cursor::new(bytes))
         .with_guessed_format()
         .map_err(|err| err.to_string())?;
-    let mut image = reader.decode().map_err(|err| err.to_string())?;
+    let image = reader.decode().map_err(|err| err.to_string())?;
-    if image.width() > THUMBNAIL_WIDTH || image.height() > THUMBNAIL_HEIGHT {
-        image = image.thumbnail(THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT);
-    }
 
-    let (width, height) = image.dimensions();
+    let preview_image = if image.width() > PREVIEW_WIDTH || image.height() > PREVIEW_HEIGHT {
-    let mut cursor = Cursor::new(Vec::new());
+        image.thumbnail(PREVIEW_WIDTH, PREVIEW_HEIGHT)
-    image
+    } else {
-        .write_to(&mut cursor, ImageFormat::Png)
+        image.clone()
-        .map_err(|err| err.to_string())?;
+    };
-    let buffer = cursor.into_inner();
+
-    Ok((buffer, Some(width as i32), Some(height as i32)))
+    let thumbnail_image =
+        if preview_image.width() > THUMBNAIL_WIDTH || preview_image.height() > THUMBNAIL_HEIGHT {
+            preview_image.thumbnail(THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT)
+        } else {
+            preview_image.clone()
+        };
+
+    let preview = encode_dynamic_image(preview_image)?;
+    let thumbnail = encode_dynamic_image(thumbnail_image)?;
+
+    Ok((
+        GeneratedAsset {
+            objects: vec![preview],
+        },
+        GeneratedAsset {
+            objects: vec![thumbnail],
+        },
+    ))
 }
 
-fn generate_pdf_thumbnail(bytes: &[u8]) -> Result<(Vec<u8>, Option<i32>, Option<i32>), String> {
+struct PdfGeneratedAssets {
+    preview: GeneratedAsset,
+    thumbnail: GeneratedAsset,
+    page_count: u32,
+}
+
+fn generate_pdf_assets(bytes: &[u8]) -> Result<PdfGeneratedAssets, String> {
     let pdfium = panic::catch_unwind(|| Pdfium::default())
         .map_err(|_| "failed to initialize PDFium".to_string())?;
 
@@ -255,49 +508,118 @@ fn generate_pdf_thumbnail(bytes: &[u8]) -> Result<(Vec<u8>, Option<i32>, Option<
         .load_pdf_from_byte_slice(bytes, None)
         .map_err(|err| format!("load pdf: {err}"))?;
 
-    let page = document
+    let pages = document.pages();
-        .pages()
+    let total_pages = pages.len() as usize;
-        .get(0)
-        .map_err(|err| format!("load first page: {err}"))?;
 
     let render_config = PdfRenderConfig::new()
-        .set_target_width(THUMBNAIL_WIDTH as i32)
+        .set_target_width(PREVIEW_WIDTH as i32)
-        .set_maximum_height(THUMBNAIL_HEIGHT as i32)
+        .set_maximum_height(PREVIEW_HEIGHT as i32)
         .render_form_data(true)
         .rotate_if_landscape(PdfPageRenderRotation::None, true);
 
+    let mut preview_objects: Vec<GeneratedImage> = Vec::with_capacity(total_pages);
+    let mut thumbnail_objects: Vec<GeneratedImage> = Vec::with_capacity(total_pages);
+
+    for page_index in 0..total_pages {
+        let page = pages
+            .get(u16::try_from(page_index).map_err(|_| "page index overflow".to_string())?)
+            .map_err(|err| format!("load page {page_index}: {err}"))?;
+
         let bitmap = page
             .render_with_config(&render_config)
-        .map_err(|err| format!("render pdf page: {err}"))?;
+            .map_err(|err| format!("render pdf page {page_index}: {err}"))?;
 
-    let image = bitmap.as_image().to_rgb8();
+        let preview_buffer = bitmap.as_image().to_rgb8();
-    let (width, height) = image.dimensions();
+        let preview_image = image::DynamicImage::ImageRgb8(preview_buffer);
-    let mut cursor = Cursor::new(Vec::new());
-    PngEncoder::new(&mut cursor)
-        .write_image(image.as_raw(), width, height, ColorType::Rgb8.into())
-        .map_err(|err| format!("encode pdf thumbnail: {err}"))?;
 
-    Ok((cursor.into_inner(), Some(width as i32), Some(height as i32)))
+        let thumbnail_image = if preview_image.width() > THUMBNAIL_WIDTH
+            || preview_image.height() > THUMBNAIL_HEIGHT
+        {
+            preview_image.thumbnail(THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT)
+        } else {
+            preview_image.clone()
+        };
+
+        preview_objects.push(encode_dynamic_image(preview_image)?);
+        thumbnail_objects.push(encode_dynamic_image(thumbnail_image)?);
+    }
+
+    let page_count: u32 = total_pages
+        .try_into()
+        .map_err(|_| "page count exceeds supported range".to_string())?;
+
+    Ok(PdfGeneratedAssets {
+        preview: GeneratedAsset {
+            objects: preview_objects,
+        },
+        thumbnail: GeneratedAsset {
+            objects: thumbnail_objects,
+        },
+        page_count,
+    })
 }
 
-fn persist_thumbnail_metadata(
+fn encode_dynamic_image(image: image::DynamicImage) -> Result<GeneratedImage, String> {
+    let (width, height) = image.dimensions();
+    let mut cursor = Cursor::new(Vec::new());
+    image
+        .write_to(&mut cursor, ImageFormat::Png)
+        .map_err(|err| err.to_string())?;
+    Ok(GeneratedImage {
+        image_bytes: cursor.into_inner(),
+        width: Some(width as i32),
+        height: Some(height as i32),
+    })
+}
+
+fn persist_assets_metadata(
     state: Arc<AppState>,
     context: &ThumbnailContext,
-    generated: &GeneratedThumbnail,
+    assets: &[AssetPersistence],
 ) -> Result<(), String> {
-    let mut conn = state.db().map_err(|err| format!("{err:?}"))?;
+    let tenant_id = context.document.tenant_id;
+    let mut conn = state
+        .db_for_tenant(tenant_id)
+        .map_err(|err| format!("{err:?}"))?;
+
+    if let Some(existing_preview) = &context.existing_preview {
+        diesel::delete(document_assets::table.filter(document_assets::id.eq(existing_preview.id)))
+            .execute(&mut conn)
+            .map_err(|err| format!("{err:?}"))?;
+    }
+
+    if let Some(existing_thumbnail) = &context.existing_thumbnail {
+        diesel::delete(
+            document_assets::table.filter(document_assets::id.eq(existing_thumbnail.id)),
+        )
+        .execute(&mut conn)
+        .map_err(|err| format!("{err:?}"))?;
+    }
+
+    for asset in assets {
+        if asset.objects.is_empty() {
+            return Err(format!(
+                "asset {} has no generated objects",
+                asset.asset_type
+            ));
+        }
+
+        let object_count: i32 = asset
+            .objects
+            .len()
+            .try_into()
+            .map_err(|_| "asset contains too many objects".to_string())?;
 
         let new_asset = NewDocumentAsset {
-        id: Uuid::new_v4(),
+            id: asset.asset_id,
             document_version_id: context.version.id,
-        asset_type: THUMBNAIL_ASSET_TYPE.to_string(),
+            asset_type: asset.asset_type.to_string(),
-        s3_key: generated.s3_key.clone(),
             mime_type: "image/png".to_string(),
-        width: generated.width,
-        height: generated.height,
             metadata: json!({
                 "generated_at": Utc::now().to_rfc3339(),
             }),
+            cardinality: Some(object_count),
+            tenant_id,
         };
 
         diesel::insert_into(document_assets::table)
@@ -308,14 +630,127 @@ fn persist_thumbnail_metadata(
             ))
             .do_update()
             .set((
-            document_assets::s3_key.eq(excluded(document_assets::s3_key)),
                 document_assets::mime_type.eq(excluded(document_assets::mime_type)),
-            document_assets::width.eq(excluded(document_assets::width)),
-            document_assets::height.eq(excluded(document_assets::height)),
                 document_assets::metadata.eq(excluded(document_assets::metadata)),
+                document_assets::cardinality.eq(excluded(document_assets::cardinality)),
             ))
             .execute(&mut conn)
             .map_err(|err| format!("{err:?}"))?;
 
+        diesel::delete(
+            document_asset_objects::table
+                .filter(document_asset_objects::asset_id.eq(asset.asset_id))
+                .filter(document_asset_objects::tenant_id.eq(tenant_id)),
+        )
+        .execute(&mut conn)
+        .map_err(|err| format!("{err:?}"))?;
+
+        for object in &asset.objects {
+            let mut metadata_map = Map::new();
+            if let Some(width) = object.width {
+                metadata_map.insert("width".to_string(), Value::from(width));
+            }
+            if let Some(height) = object.height {
+                metadata_map.insert("height".to_string(), Value::from(height));
+            }
+
+            let object_metadata = Value::Object(metadata_map);
+
+            let new_object = NewDocumentAssetObject {
+                id: Uuid::new_v4(),
+                asset_id: asset.asset_id,
+                ordinal: object.ordinal,
+                s3_key: object.s3_key.clone(),
+                metadata: object_metadata,
+                tenant_id,
+            };
+
+            diesel::insert_into(document_asset_objects::table)
+                .values(&new_object)
+                .execute(&mut conn)
+                .map_err(|err| format!("{err:?}"))?;
+        }
+    }
+
+    Ok(())
+}
+
+fn persist_document_page_count(
+    state: Arc<AppState>,
+    document_id: Uuid,
+    document_version_id: Uuid,
+    page_count: u32,
+) -> Result<(), String> {
+    let mut conn = state.db_unscoped().map_err(|err| format!("{err:?}"))?;
+    let tenant_id: Uuid = documents::table
+        .find(document_id)
+        .select(documents::tenant_id)
+        .first(&mut conn)
+        .map_err(|err| format!("{err:?}"))?;
+
+    let existing_metadata: Value = document_versions::table
+        .filter(document_versions::id.eq(document_version_id))
+        .filter(document_versions::document_id.eq(document_id))
+        .filter(document_versions::tenant_id.eq(tenant_id))
+        .select(document_versions::metadata)
+        .first(&mut conn)
+        .map_err(|err| format!("{err:?}"))?;
+
+    let updated = match existing_metadata {
+        Value::Object(mut map) => {
+            map.insert("page_count".to_string(), Value::from(page_count));
+            Value::Object(map)
+        }
+        _ => {
+            let mut map = Map::new();
+            map.insert("page_count".to_string(), Value::from(page_count));
+            Value::Object(map)
+        }
+    };
+
+    diesel::update(
+        document_versions::table
+            .filter(document_versions::id.eq(document_version_id))
+            .filter(document_versions::document_id.eq(document_id))
+            .filter(document_versions::tenant_id.eq(tenant_id)),
+    )
+    .set(document_versions::metadata.eq(updated))
+    .execute(&mut conn)
+    .map_err(|err| format!("{err:?}"))?;
+
     Ok(())
 }
+
+fn document_is_pdf(document: &Document) -> bool {
+    document
+        .content_type
+        .as_deref()
+        .map(|mime| mime.eq_ignore_ascii_case("application/pdf"))
+        .unwrap_or_else(|| {
+            document
+                .original_name
+                .rsplit('.')
+                .next()
+                .map(|ext| ext.eq_ignore_ascii_case("pdf"))
+                .unwrap_or(false)
+        })
+}
+
+fn expected_asset_cardinality(document: &Document, version: &DocumentVersion) -> i32 {
+    if let Value::Object(map) = &version.metadata {
+        if let Some(count) = map.get("page_count").and_then(|v| v.as_i64()) {
+            if count > 0 {
+                return count
+                    .min(i64::from(i32::MAX))
+                    .try_into()
+                    .unwrap_or(i32::MAX);
+            }
+        }
+    }
+
+    if document_is_pdf(document) {
+        1
+    } else {
+        1
+    }
+}

backend/tests/auth_flow.rs

@@ -8,7 +8,6 @@ use serde::Deserialize;
 #[derive(Deserialize)]
 struct AuthenticatedUser {
     username: String,
-    role: String,
 }
 
 #[tokio::test]
@@ -27,7 +26,6 @@ async fn login_and_me_roundtrip() -> Result<()> {
     let user: AuthenticatedUser = serde_json::from_slice(&body)?;
 
     assert_eq!(user.username, "alice");
-    assert_eq!(user.role, "admin");
 
     app.cleanup().await?;
     Ok(())

backend/tests/common/mod.rs

@@ -8,21 +8,23 @@ use async_trait::async_trait;
 use axum::body::Body;
 use axum::http::{Method, Request, StatusCode};
 use axum::Router;
+use backend::auth::jwt::JwtService;
+use backend::config::AppConfig;
+use backend::db::{self, PgPool};
+use backend::models::{Job, NewUser, NewUserMembership, Tenant};
+use backend::routes;
+use backend::state::AppState;
+use backend::storage::ObjectStorage;
 use diesel::connection::SimpleConnection;
 use diesel::prelude::*;
+use diesel::OptionalExtension;
 use diesel::PgConnection;
 use diesel_migrations::{embed_migrations, EmbeddedMigrations, MigrationHarness};
 use http_body_util::BodyExt;
 use once_cell::sync::Lazy;
-use paperless_backend::auth::jwt::JwtService;
-use paperless_backend::config::AppConfig;
-use paperless_backend::db::{self, PgPool};
-use paperless_backend::models::{Job, NewUser};
-use paperless_backend::routes;
-use paperless_backend::state::AppState;
-use paperless_backend::storage::ObjectStorage;
 use rand::rngs::OsRng;
-use serde::Serialize;
+use serde::{Deserialize, Serialize};
+use serde_json;
 use tokio::sync::Mutex;
 use tower::util::ServiceExt;
 use uuid::Uuid;
@@ -37,6 +39,7 @@ pub struct StoredObject {
     pub key: String,
     pub bytes: Vec<u8>,
     pub content_type: Option<String>,
+    pub content_disposition: Option<String>,
 }
 
 #[derive(Default)]
@@ -51,11 +54,13 @@ impl ObjectStorage for FakeStorage {
         key: &str,
         bytes: Vec<u8>,
         content_type: Option<String>,
+        content_disposition: Option<String>,
     ) -> Result<()> {
         let stored = StoredObject {
             key: key.to_string(),
             bytes,
             content_type,
+            content_disposition,
         };
         let mut guard = self.objects.lock().await;
         guard.insert(stored.key.clone(), stored);
@@ -78,6 +83,12 @@ impl ObjectStorage for FakeStorage {
             .map(|obj| obj.bytes.clone())
             .ok_or_else(|| anyhow!("object {key} missing"))
     }
+
+    async fn delete_object(&self, key: &str) -> Result<()> {
+        let mut guard = self.objects.lock().await;
+        guard.remove(key);
+        Ok(())
+    }
 }
 
 impl FakeStorage {
@@ -107,20 +118,32 @@ impl TestApp {
 
         let config = AppConfig {
             database_url: database_url.clone(),
+            database_max_pool_size: db::DEFAULT_MAX_POOL_SIZE,
             server_host: "127.0.0.1".to_string(),
             server_port: 0,
+            webdav_host: "127.0.0.1".to_string(),
+            webdav_port: 0,
             jwt_secret: "test-secret".to_string(),
             jwt_issuer: "test-issuer".to_string(),
             jwt_audience: "test-audience".to_string(),
             jwt_expiry_minutes: 60,
+            download_token_audience: "test-download".to_string(),
+            download_token_expiry_minutes: 60,
+            refresh_token_expiry_days: 30,
+            refresh_cookie_secure: false,
+            refresh_cookie_domain: None,
+            cors_allowed_origin: None,
             aws_endpoint_url: None,
             aws_access_key_id: None,
             aws_secret_access_key: None,
             aws_region: "us-east-1".to_string(),
             s3_bucket: "test-bucket".to_string(),
+            quickwit_endpoint: None,
+            quickwit_index: None,
+            default_tenant_slug: "admin".to_string(),
         };
 
-        let pool = db::init_pool(&config.database_url)?;
+        let pool = db::init_pool_with_size(&config.database_url, config.database_max_pool_size)?;
         prepare_database(&pool).await?;
 
         let storage = Arc::new(FakeStorage::default());
@@ -129,16 +152,20 @@ impl TestApp {
         let state = AppState::new(pool.clone(), config, storage_for_state, jwt);
         let router = routes::create_router(state.clone());
 
-        Ok(Self {
+        let app = Self {
             state,
             router,
             storage,
-        })
+        };
+
+        app.ensure_default_tenant().await?;
+
+        Ok(app)
     }
 
     pub async fn cleanup(&self) -> Result<()> {
         let pool = self.state.pool.clone();
-        tokio::task::spawn_blocking(move || -> Result<()> {
+        let _ = tokio::task::spawn_blocking(move || -> Result<()> {
             let mut conn = pool
                 .get()
                 .map_err(|err| anyhow!("failed to get cleanup connection: {err}"))?;
@@ -146,7 +173,10 @@ impl TestApp {
             Ok(())
         })
         .await
-        .context("cleanup task panicked")?
+        .context("cleanup task panicked")?;
+
+        self.ensure_default_tenant().await?;
+        Ok(())
     }
 
     #[allow(dead_code)]
@@ -154,27 +184,111 @@ impl TestApp {
         self.storage.clone()
     }
 
+    #[allow(dead_code)]
+    pub async fn storage_key_for(&self, key: &str) -> Result<String> {
+        let tenant = self
+            .state
+            .tenants
+            .get_by_slug(&self.state.config.default_tenant_slug)
+            .map_err(|err| anyhow!("default tenant not found: {:?}", err))?;
+        let root = tenant
+            .storage_root
+            .clone()
+            .ok_or_else(|| anyhow!("default tenant missing storage root"))?;
+        Ok(format!("{}{}", root, key))
+    }
+
     pub async fn insert_user(&self, username: &str, password: &str, role: &str) -> Result<Uuid> {
         let username = username.to_string();
         let password = password.to_string();
         let role = role.to_string();
+        let tenant_id = self
+            .state
+            .tenants
+            .tenant_id_for_slug(&self.state.config.default_tenant_slug)
+            .map_err(|err| anyhow!("default tenant not found: {:?}", err))?;
         self.with_conn(move |conn| {
             let password_hash = hash_password(&password)?;
             let user = NewUser {
                 id: Uuid::new_v4(),
                 username,
                 password_hash,
-                role,
             };
-            diesel::insert_into(paperless_backend::schema::users::table)
+            diesel::insert_into(backend::schema::users::table)
                 .values(&user)
                 .execute(conn)
                 .context("failed to insert user")?;
+
+            let membership = NewUserMembership {
+                id: Uuid::new_v4(),
+                user_id: user.id,
+                tenant_id,
+                role,
+            };
+
+            diesel::insert_into(backend::schema::user_memberships::table)
+                .values(&membership)
+                .execute(conn)
+                .context("failed to insert user membership")?;
             Ok(user.id)
         })
         .await
     }
 
+    async fn ensure_default_tenant(&self) -> Result<Uuid> {
+        let slug_value = self.state.config.default_tenant_slug.clone();
+        let quickwit_enabled = self.state.config.quickwit_endpoint.is_some();
+        self.with_conn(move |conn| {
+            use backend::schema::tenants::dsl as tenants_dsl;
+
+            let existing = tenants_dsl::tenants
+                .filter(tenants_dsl::slug.eq(&slug_value))
+                .first::<Tenant>(conn)
+                .optional()
+                .context("failed to load default tenant")?;
+
+            let tenant_id = if let Some(current) = existing {
+                let desired_root = current
+                    .storage_root
+                    .clone()
+                    .filter(|root| root.ends_with('/'))
+                    .unwrap_or_else(|| format!("test-tenants/{}/", current.id));
+
+                if current.storage_root.as_deref() != Some(desired_root.as_str()) {
+                    diesel::update(tenants_dsl::tenants.filter(tenants_dsl::id.eq(current.id)))
+                        .set(tenants_dsl::storage_root.eq(Some(desired_root)))
+                        .execute(conn)
+                        .context("failed to update default tenant storage root")?;
+                }
+
+                current.id
+            } else {
+                let new_id = Uuid::new_v4();
+                let root = format!("test-tenants/{}/", new_id);
+                let quickwit_value = if quickwit_enabled {
+                    Some(format!("documents-{}", new_id))
+                } else {
+                    None
+                };
+
+                diesel::insert_into(tenants_dsl::tenants)
+                    .values((
+                        tenants_dsl::id.eq(new_id),
+                        tenants_dsl::slug.eq(&slug_value),
+                        tenants_dsl::storage_root.eq(Some(root)),
+                        tenants_dsl::quickwit_index.eq(quickwit_value),
+                    ))
+                    .execute(conn)
+                    .context("failed to insert default tenant")?;
+
+                new_id
+            };
+
+            Ok(tenant_id)
+        })
+        .await
+    }
+
     pub async fn login_token(&self, username: &str, password: &str) -> Result<String> {
         #[derive(Serialize)]
         struct LoginPayload<'a> {
@@ -197,18 +311,64 @@ impl TestApp {
         );
 
         let body = body_to_vec(response.into_body()).await?;
-        #[derive(serde::Deserialize)]
+        #[derive(Deserialize)]
         struct LoginResponse {
             access_token: String,
         }
-        let parsed: LoginResponse = serde_json::from_slice(&body)?;
+
+        if let Ok(parsed) = serde_json::from_slice::<LoginResponse>(&body) {
+            return Ok(parsed.access_token);
+        }
+
+        #[derive(Deserialize)]
+        struct TenantSummary {
+            tenant_id: Uuid,
+            _slug: String,
+        }
+
+        #[derive(Deserialize)]
+        struct TenantSelectionResponse {
+            selection_token: String,
+            tenants: Vec<TenantSummary>,
+        }
+
+        let selection: TenantSelectionResponse = serde_json::from_slice(&body)?;
+        ensure!(
+            !selection.tenants.is_empty(),
+            "login returned no tenant options",
+        );
+
+        #[derive(Serialize)]
+        struct SelectTenantPayload {
+            tenant_id: Uuid,
+        }
+
+        let target_tenant = selection.tenants[0].tenant_id;
+        let select_response = self
+            .post_json(
+                "/api/auth/select-tenant",
+                &SelectTenantPayload {
+                    tenant_id: target_tenant,
+                },
+                Some(&selection.selection_token),
+            )
+            .await?;
+
+        ensure!(
+            select_response.status() == StatusCode::OK,
+            "tenant selection failed with status {}",
+            select_response.status()
+        );
+
+        let select_body = body_to_vec(select_response.into_body()).await?;
+        let parsed: LoginResponse = serde_json::from_slice(&select_body)?;
         Ok(parsed.access_token)
     }
 
     #[allow(dead_code)]
     pub async fn clear_jobs(&self) -> Result<()> {
         self.with_conn(|conn| {
-            use paperless_backend::schema::jobs::dsl::jobs as jobs_table;
+            use backend::schema::jobs::dsl::jobs as jobs_table;
             diesel::delete(jobs_table)
                 .execute(conn)
                 .context("failed to clear jobs")?;
@@ -221,9 +381,7 @@ impl TestApp {
     pub async fn jobs_by_type(&self, ty: &str) -> Result<Vec<Job>> {
         let ty = ty.to_string();
         self.with_conn(move |conn| {
-            use paperless_backend::schema::jobs::dsl::{
+            use backend::schema::jobs::dsl::{job_type as job_type_col, jobs as jobs_table};
-                job_type as job_type_col, jobs as jobs_table,
-            };
             let rows = jobs_table
                 .filter(job_type_col.eq(&ty))
                 .load::<Job>(conn)
@@ -320,6 +478,30 @@ impl TestApp {
         data: &[u8],
         folder_id: Option<Uuid>,
         token: &str,
+    ) -> Result<hyper::Response<Body>> {
+        self.upload_document_with_options(
+            path,
+            filename,
+            content_type,
+            data,
+            folder_id,
+            None,
+            None,
+            token,
+        )
+        .await
+    }
+
+    pub async fn upload_document_with_options(
+        &self,
+        path: &str,
+        filename: &str,
+        content_type: &str,
+        data: &[u8],
+        folder_id: Option<Uuid>,
+        title: Option<&str>,
+        metadata_json: Option<&str>,
+        token: &str,
     ) -> Result<hyper::Response<Body>> {
         let boundary = format!("boundary-{}", Uuid::new_v4());
         let mut body = Vec::new();
@@ -342,6 +524,20 @@ impl TestApp {
             body.extend(b"\r\n");
         }
 
+        if let Some(title_value) = title {
+            body.extend(format!("--{boundary}\r\n").as_bytes());
+            body.extend(b"Content-Disposition: form-data; name=\"title\"\r\n\r\n");
+            body.extend(title_value.as_bytes());
+            body.extend(b"\r\n");
+        }
+
+        if let Some(metadata_value) = metadata_json {
+            body.extend(format!("--{boundary}\r\n").as_bytes());
+            body.extend(b"Content-Disposition: form-data; name=\"metadata\"\r\n\r\n");
+            body.extend(metadata_value.as_bytes());
+            body.extend(b"\r\n");
+        }
+
         body.extend(format!("--{boundary}--\r\n").as_bytes());
 
         let builder = Request::builder()
@@ -408,7 +604,22 @@ async fn prepare_database(pool: &PgPool) -> Result<()> {
 
 fn truncate_all(conn: &mut PgConnection) -> Result<()> {
     conn.batch_execute(
-        "TRUNCATE TABLE document_tags, document_versions, documents, folders, tags, users RESTART IDENTITY CASCADE;",
+        "TRUNCATE TABLE \
+            document_asset_objects, \
+            document_assets, \
+            document_correspondents, \
+            correspondents, \
+            document_tags, \
+            document_versions, \
+            documents, \
+            folders, \
+            jobs, \
+            refresh_tokens, \
+            tags, \
+            user_memberships, \
+            users, \
+            tenants \
+        RESTART IDENTITY CASCADE;",
     )
     .context("failed to truncate tables")?;
     Ok(())

backend/tests/documents_flow.rs

@@ -9,19 +9,21 @@ use uuid::Uuid;
 #[derive(Deserialize)]
 struct DocumentDetail {
     document: DocumentInfo,
-    current_version: DocumentVersion,
-    assets: Vec<DocumentAssetInfo>,
 }
 
 #[derive(Deserialize)]
 struct DocumentInfo {
     id: Uuid,
     title: String,
+    filename: String,
     original_name: String,
-    current_version: i32,
     deleted_at: Option<String>,
     issued_at: Option<String>,
     tags: Vec<TagSummary>,
+    #[serde(default)]
+    correspondents: Vec<DocumentCorrespondentInfo>,
+    #[serde(default)]
+    current_version: Option<DocumentVersion>,
 }
 
 #[derive(Deserialize)]
@@ -29,6 +31,10 @@ struct DocumentVersion {
     id: Uuid,
     s3_key: String,
     size_bytes: i64,
+    version_number: i32,
+    download_path: String,
+    #[serde(default)]
+    assets: Vec<DocumentAssetInfo>,
 }
 
 #[allow(dead_code)]
@@ -41,7 +47,8 @@ struct DocumentAssetInfo {
 #[derive(Deserialize)]
 struct DocumentListItem {
     id: Uuid,
-    current_version: i32,
+    #[serde(default)]
+    current_version: Option<DocumentVersion>,
 }
 
 #[derive(Deserialize)]
@@ -71,6 +78,23 @@ struct TagSummary {
     label: String,
 }
 
+#[derive(Deserialize)]
+struct DocumentCorrespondentInfo {
+    name: String,
+    role: String,
+}
+
+#[derive(Deserialize)]
+struct CorrespondentSummary {
+    id: Uuid,
+}
+
+#[derive(Deserialize)]
+struct BulkCorrespondentResult {
+    assigned: usize,
+    removed: usize,
+}
+
 #[derive(Deserialize)]
 struct AnalyzeJobPayload {
     document_id: Uuid,
@@ -150,16 +174,23 @@ async fn upload_and_list_document() -> Result<()> {
 
     assert_eq!(detail.document.original_name, "doc.txt");
     assert_eq!(detail.document.title, "doc");
-    assert_eq!(detail.document.current_version, 1);
     assert_eq!(detail.document.deleted_at, None);
     assert!(detail.document.issued_at.is_none());
     assert!(detail.document.tags.is_empty());
-    assert_eq!(detail.current_version.size_bytes, file_bytes.len() as i64);
+    let current_version = detail
-    assert!(detail.assets.is_empty());
+        .document
+        .current_version
+        .as_ref()
+        .expect("current version detail");
+    assert!(current_version.download_path.starts_with("/download/"));
+    assert_eq!(current_version.version_number, 1);
+    assert_eq!(current_version.size_bytes, file_bytes.len() as i64);
+    assert!(current_version.assets.is_empty());
 
+    let storage_key = app.storage_key_for(&current_version.s3_key).await?;
     let stored = app
         .storage()
-        .get(&detail.current_version.s3_key)
+        .get(&storage_key)
         .await
         .expect("object stored");
     assert_eq!(stored.bytes, file_bytes);
@@ -172,7 +203,18 @@ async fn upload_and_list_document() -> Result<()> {
     assert_eq!(list.len(), 1);
     let item = list.pop().unwrap();
     assert_eq!(item.id, detail.document.id);
-    assert_eq!(item.current_version, 1);
+    assert_eq!(
+        item.current_version
+            .as_ref()
+            .map(|version| version.version_number),
+        Some(1)
+    );
+    assert!(item
+        .current_version
+        .as_ref()
+        .expect("list current version")
+        .download_path
+        .starts_with("/download/"));
 
     let download = app
         .get(
@@ -183,9 +225,55 @@ async fn upload_and_list_document() -> Result<()> {
     assert_eq!(download.status(), StatusCode::OK);
     let body = body_to_vec(download.into_body()).await?;
     let download_info: DocumentDownload = serde_json::from_slice(&body)?;
-    assert!(download_info.url.contains(&detail.current_version.s3_key));
+    assert!(download_info.url.contains(&current_version.s3_key));
     assert_eq!(download_info.filename, "doc.txt");
 
+    let redirect = app.get(&current_version.download_path, None).await?;
+    assert_eq!(redirect.status(), StatusCode::TEMPORARY_REDIRECT);
+    let location = redirect
+        .headers()
+        .get("location")
+        .expect("redirect location header");
+    let location = location.to_str().expect("location header utf8");
+    assert!(location.contains(&current_version.s3_key));
+
+    app.cleanup().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn upload_document_with_custom_title_sets_filename() -> Result<()> {
+    let _lock = acquire_db_lock().await;
+    let app = TestApp::new().await?;
+
+    let password = "passw0rd";
+    app.insert_user("nora", password, "admin").await?;
+    let token = app.login_token("nora", password).await?;
+
+    let file_bytes = b"example contract body".to_vec();
+    let title = "Vendor Contract";
+    let original_filename = "scan.pdf";
+
+    let upload = app
+        .upload_document_with_options(
+            "/api/documents",
+            original_filename,
+            "application/pdf",
+            &file_bytes,
+            None,
+            Some(title),
+            None,
+            &token,
+        )
+        .await?;
+    assert_eq!(upload.status(), StatusCode::CREATED);
+    let body = body_to_vec(upload.into_body()).await?;
+    let detail: DocumentDetail = serde_json::from_slice(&body)?;
+
+    assert_eq!(detail.document.title, title);
+    assert_eq!(detail.document.filename, format!("{title}.pdf"));
+    assert_eq!(detail.document.original_name, original_filename);
+
     app.cleanup().await?;
     Ok(())
 }
@@ -230,7 +318,13 @@ async fn duplicate_and_restore_document() -> Result<()> {
 
     assert_eq!(first_detail.document.id, second_detail.document.id);
     assert_eq!(second_detail.document.deleted_at, None);
-    assert!(second_detail.assets.is_empty());
+    assert!(second_detail
+        .document
+        .current_version
+        .as_ref()
+        .expect("second current version")
+        .assets
+        .is_empty());
     assert_eq!(app.storage().object_count().await, 1);
 
     let delete = app
@@ -263,82 +357,6 @@ async fn duplicate_and_restore_document() -> Result<()> {
     Ok(())
 }
 
-#[tokio::test]
-async fn bulk_reanalyze_documents() -> Result<()> {
-    let _lock = acquire_db_lock().await;
-    let app = TestApp::new().await?;
-
-    let password = "bulkpass";
-    app.insert_user("alex", password, "admin").await?;
-    let token = app.login_token("alex", password).await?;
-
-    app.clear_jobs().await?;
-
-    let first_bytes = b"first doc";
-    let first = app
-        .upload_document(
-            "/api/documents",
-            "first.txt",
-            "text/plain",
-            first_bytes,
-            None,
-            &token,
-        )
-        .await?;
-    assert_eq!(first.status(), StatusCode::CREATED);
-    let first_body = body_to_vec(first.into_body()).await?;
-    let first_detail: DocumentDetail = serde_json::from_slice(&first_body)?;
-
-    let second_bytes = b"second doc";
-    let second = app
-        .upload_document(
-            "/api/documents",
-            "second.txt",
-            "text/plain",
-            second_bytes,
-            None,
-            &token,
-        )
-        .await?;
-    assert_eq!(second.status(), StatusCode::CREATED);
-    let second_body = body_to_vec(second.into_body()).await?;
-    let second_detail: DocumentDetail = serde_json::from_slice(&second_body)?;
-
-    app.clear_jobs().await?;
-
-    let response = app
-        .post_json(
-            "/api/documents/reanalyze",
-            &serde_json::json!({}),
-            Some(&token),
-        )
-        .await?;
-    assert_eq!(response.status(), StatusCode::ACCEPTED);
-    let body = body_to_vec(response.into_body()).await?;
-    let bulk: BulkReanalyze = serde_json::from_slice(&body)?;
-    assert_eq!(bulk.queued, 2);
-
-    let jobs = app.jobs_by_type("analyze-document").await?;
-    assert_eq!(jobs.len(), 2);
-    let mut payload_docs = Vec::new();
-    for job in jobs {
-        let payload: AnalyzeJobPayload = serde_json::from_value(job.payload)?;
-        assert!(payload.force);
-        payload_docs.push((payload.document_id, payload.document_version_id));
-    }
-
-    let mut expected = vec![
-        (first_detail.document.id, first_detail.current_version.id),
-        (second_detail.document.id, second_detail.current_version.id),
-    ];
-    payload_docs.sort();
-    expected.sort();
-    assert_eq!(payload_docs, expected);
-
-    app.cleanup().await?;
-    Ok(())
-}
-
 #[tokio::test]
 async fn bulk_move_documents_to_folder() -> Result<()> {
     let _lock = acquire_db_lock().await;
@@ -564,6 +582,234 @@ async fn bulk_update_tags_for_selection() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test]
+async fn bulk_assign_correspondents_to_selection() -> Result<()> {
+    let _lock = acquire_db_lock().await;
+    let app = TestApp::new().await?;
+
+    let password = "bulkcorresp";
+    app.insert_user("corra", password, "admin").await?;
+    let token = app.login_token("corra", password).await?;
+
+    let first = app
+        .upload_document(
+            "/api/documents",
+            "letter-one.txt",
+            "text/plain",
+            b"letter one",
+            None,
+            &token,
+        )
+        .await?;
+    assert_eq!(first.status(), StatusCode::CREATED);
+    let first_body = body_to_vec(first.into_body()).await?;
+    let first_detail: DocumentDetail = serde_json::from_slice(&first_body)?;
+
+    let second = app
+        .upload_document(
+            "/api/documents",
+            "letter-two.txt",
+            "text/plain",
+            b"letter two",
+            None,
+            &token,
+        )
+        .await?;
+    assert_eq!(second.status(), StatusCode::CREATED);
+    let second_body = body_to_vec(second.into_body()).await?;
+    let second_detail: DocumentDetail = serde_json::from_slice(&second_body)?;
+
+    let sender = app
+        .post_json(
+            "/api/correspondents",
+            &serde_json::json!({ "name": "Acme Corp" }),
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(sender.status(), StatusCode::OK);
+    let sender_body = body_to_vec(sender.into_body()).await?;
+    let sender_summary: CorrespondentSummary = serde_json::from_slice(&sender_body)?;
+
+    let receiver = app
+        .post_json(
+            "/api/correspondents",
+            &serde_json::json!({ "name": "Bank Ltd" }),
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(receiver.status(), StatusCode::OK);
+    let receiver_body = body_to_vec(receiver.into_body()).await?;
+    let receiver_summary: CorrespondentSummary = serde_json::from_slice(&receiver_body)?;
+
+    let assign_payload = serde_json::json!({
+        "document_ids": [
+            first_detail.document.id,
+            second_detail.document.id
+        ],
+        "assignments": [
+            {
+                "correspondent_id": sender_summary.id,
+                "role": "sender"
+            },
+            {
+                "correspondent_id": receiver_summary.id,
+                "role": "receiver"
+            }
+        ]
+    });
+
+    let assign_resp = app
+        .post_json(
+            "/api/documents/bulk/correspondents",
+            &assign_payload,
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(assign_resp.status(), StatusCode::OK);
+    let assign_body = body_to_vec(assign_resp.into_body()).await?;
+    let assign_result: BulkCorrespondentResult = serde_json::from_slice(&assign_body)?;
+    assert_eq!(assign_result.assigned, 4);
+    assert_eq!(assign_result.removed, 0);
+
+    for doc_id in [first_detail.document.id, second_detail.document.id] {
+        let refreshed = app
+            .get(&format!("/api/documents/{doc_id}"), Some(&token))
+            .await?;
+        assert_eq!(refreshed.status(), StatusCode::OK);
+        let refreshed_body = body_to_vec(refreshed.into_body()).await?;
+        let detail: DocumentDetail = serde_json::from_slice(&refreshed_body)?;
+        assert_eq!(detail.document.correspondents.len(), 2);
+        assert!(detail
+            .document
+            .correspondents
+            .iter()
+            .any(|entry| entry.role == "sender" && entry.name == "Acme Corp"));
+        assert!(detail
+            .document
+            .correspondents
+            .iter()
+            .any(|entry| entry.role == "receiver" && entry.name == "Bank Ltd"));
+    }
+
+    let duplicate_resp = app
+        .post_json(
+            "/api/documents/bulk/correspondents",
+            &assign_payload,
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(duplicate_resp.status(), StatusCode::OK);
+    let duplicate_body = body_to_vec(duplicate_resp.into_body()).await?;
+    let duplicate_result: BulkCorrespondentResult = serde_json::from_slice(&duplicate_body)?;
+    assert_eq!(duplicate_result.assigned, 0);
+    assert_eq!(duplicate_result.removed, 0);
+
+    let replacement = app
+        .post_json(
+            "/api/correspondents",
+            &serde_json::json!({ "name": "Charlie" }),
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(replacement.status(), StatusCode::OK);
+    let replacement_body = body_to_vec(replacement.into_body()).await?;
+    let replacement_summary: CorrespondentSummary = serde_json::from_slice(&replacement_body)?;
+
+    let replace_payload = serde_json::json!({
+        "document_ids": [
+            first_detail.document.id,
+            second_detail.document.id
+        ],
+        "assignments": [
+            {
+                "correspondent_id": replacement_summary.id,
+                "role": "sender"
+            }
+        ]
+    });
+
+    let replace_resp = app
+        .post_json(
+            "/api/documents/bulk/correspondents",
+            &replace_payload,
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(replace_resp.status(), StatusCode::OK);
+    let replace_body = body_to_vec(replace_resp.into_body()).await?;
+    let replace_result: BulkCorrespondentResult = serde_json::from_slice(&replace_body)?;
+    assert_eq!(replace_result.assigned, 2);
+    assert_eq!(replace_result.removed, 2);
+
+    for doc_id in [first_detail.document.id, second_detail.document.id] {
+        let refreshed = app
+            .get(&format!("/api/documents/{doc_id}"), Some(&token))
+            .await?;
+        let refreshed_body = body_to_vec(refreshed.into_body()).await?;
+        let detail: DocumentDetail = serde_json::from_slice(&refreshed_body)?;
+        assert_eq!(detail.document.correspondents.len(), 2);
+        assert!(detail
+            .document
+            .correspondents
+            .iter()
+            .any(|entry| entry.role == "sender" && entry.name == "Charlie"));
+        assert!(detail
+            .document
+            .correspondents
+            .iter()
+            .any(|entry| entry.role == "receiver" && entry.name == "Bank Ltd"));
+    }
+
+    let remove_payload = serde_json::json!({
+        "document_ids": [
+            first_detail.document.id,
+            second_detail.document.id
+        ],
+        "assignments": [
+            {
+                "correspondent_id": receiver_summary.id,
+                "role": "receiver"
+            }
+        ],
+        "action": "remove"
+    });
+
+    let remove_resp = app
+        .post_json(
+            "/api/documents/bulk/correspondents",
+            &remove_payload,
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(remove_resp.status(), StatusCode::OK);
+    let remove_body = body_to_vec(remove_resp.into_body()).await?;
+    let remove_result: BulkCorrespondentResult = serde_json::from_slice(&remove_body)?;
+    assert_eq!(remove_result.assigned, 0);
+    assert_eq!(remove_result.removed, 2);
+
+    for doc_id in [first_detail.document.id, second_detail.document.id] {
+        let refreshed = app
+            .get(&format!("/api/documents/{doc_id}"), Some(&token))
+            .await?;
+        let refreshed_body = body_to_vec(refreshed.into_body()).await?;
+        let detail: DocumentDetail = serde_json::from_slice(&refreshed_body)?;
+        assert_eq!(detail.document.correspondents.len(), 1);
+        assert!(detail
+            .document
+            .correspondents
+            .iter()
+            .any(|entry| entry.role == "sender" && entry.name == "Charlie"));
+        assert!(!detail
+            .document
+            .correspondents
+            .iter()
+            .any(|entry| entry.role == "receiver"));
+    }
+
+    app.cleanup().await?;
+    Ok(())
+}
+
 #[tokio::test]
 async fn bulk_reanalyze_selected_documents() -> Result<()> {
     let _lock = acquire_db_lock().await;
@@ -648,8 +894,24 @@ async fn bulk_reanalyze_selected_documents() -> Result<()> {
         .all(|(doc_id, _)| *doc_id != second_detail.document.id));
 
     let mut expected = vec![
-        (first_detail.document.id, first_detail.current_version.id),
+        (
-        (third_detail.document.id, third_detail.current_version.id),
+            first_detail.document.id,
+            first_detail
+                .document
+                .current_version
+                .as_ref()
+                .expect("first current version")
+                .id,
+        ),
+        (
+            third_detail.document.id,
+            third_detail
+                .document
+                .current_version
+                .as_ref()
+                .expect("third current version")
+                .id,
+        ),
     ];
     payload_docs.sort();
     expected.sort();

backend/tests/folders_flow.rs

@@ -5,6 +5,7 @@ use axum::http::StatusCode;
 use common::{acquire_db_lock, body_to_vec, TestApp};
 use serde::Deserialize;
 use serde::Serialize;
+use serde_json::json;
 use uuid::Uuid;
 
 #[derive(Deserialize)]
@@ -15,10 +16,14 @@ struct FolderResponse {
 #[derive(Deserialize)]
 struct FolderInfo {
     id: Uuid,
+    name: String,
+    parent_id: Option<Uuid>,
 }
 
 #[derive(Deserialize)]
 struct FolderContents {
+    folder: Option<FolderInfo>,
+    subfolders: Vec<FolderInfo>,
     documents: Vec<DocSummary>,
 }
 
@@ -139,6 +144,78 @@ async fn folder_move_and_delete_flow() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test]
+async fn update_folder_parent_to_root() -> Result<()> {
+    let _lock = acquire_db_lock().await;
+    let app = TestApp::new().await?;
+
+    let password = "rootpass";
+    app.insert_user("root-admin", password, "admin").await?;
+    let token = app.login_token("root-admin", password).await?;
+
+    // Create a parent folder under root
+    let parent_resp = app
+        .post_json(
+            "/api/folders",
+            &CreateFolder {
+                name: "Parent",
+                parent_id: None,
+            },
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(parent_resp.status(), StatusCode::OK);
+    let parent_body = body_to_vec(parent_resp.into_body()).await?;
+    let parent: FolderResponse = serde_json::from_slice(&parent_body)?;
+
+    // Create a child folder inside the parent
+    let child_resp = app
+        .post_json(
+            "/api/folders",
+            &CreateFolder {
+                name: "Child",
+                parent_id: Some(parent.folder.id),
+            },
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(child_resp.status(), StatusCode::OK);
+    let child_body = body_to_vec(child_resp.into_body()).await?;
+    let child: FolderResponse = serde_json::from_slice(&child_body)?;
+
+    // Move the child back to the root by setting parent_id to null
+    let update_resp = app
+        .patch_json(
+            &format!("/api/folders/{}", child.folder.id),
+            &json!({ "parent_id": null }),
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(update_resp.status(), StatusCode::NO_CONTENT);
+
+    // Fetch the child folder and ensure parent_id is now null
+    let updated_resp = app
+        .get(&format!("/api/folders/{}", child.folder.id), Some(&token))
+        .await?;
+    assert_eq!(updated_resp.status(), StatusCode::OK);
+    let updated_body = body_to_vec(updated_resp.into_body()).await?;
+    let updated_folder: FolderResponse = serde_json::from_slice(&updated_body)?;
+    assert!(updated_folder.folder.parent_id.is_none());
+
+    // Root contents should include the child folder by name
+    let root_contents = app.get("/api/folders/root/contents", Some(&token)).await?;
+    assert_eq!(root_contents.status(), StatusCode::OK);
+    let root_body = body_to_vec(root_contents.into_body()).await?;
+    let root: FolderContents = serde_json::from_slice(&root_body)?;
+    assert!(root
+        .subfolders
+        .iter()
+        .any(|folder| folder.id == child.folder.id));
+
+    app.cleanup().await?;
+    Ok(())
+}
+
 #[tokio::test]
 async fn ensure_path_creates_nested_folders() -> Result<()> {
     let _lock = acquire_db_lock().await;
@@ -215,3 +292,90 @@ async fn ensure_path_creates_nested_folders() -> Result<()> {
     app.cleanup().await?;
     Ok(())
 }
+
+#[tokio::test]
+async fn folder_rename_updates_name_and_child_paths() -> Result<()> {
+    let _lock = acquire_db_lock().await;
+    let app = TestApp::new().await?;
+
+    let password = "renamepass";
+    app.insert_user("rename-admin", password, "admin").await?;
+    let token = app.login_token("rename-admin", password).await?;
+
+    let parent_resp = app
+        .post_json(
+            "/api/folders",
+            &CreateFolder {
+                name: "Projects",
+                parent_id: None,
+            },
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(parent_resp.status(), StatusCode::OK);
+    let parent_body = body_to_vec(parent_resp.into_body()).await?;
+    let parent: FolderResponse = serde_json::from_slice(&parent_body)?;
+
+    let child_resp = app
+        .post_json(
+            "/api/folders",
+            &CreateFolder {
+                name: "Q1",
+                parent_id: Some(parent.folder.id),
+            },
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(child_resp.status(), StatusCode::OK);
+    let child_body = body_to_vec(child_resp.into_body()).await?;
+    let child: FolderResponse = serde_json::from_slice(&child_body)?;
+
+    let rename_resp = app
+        .patch_json(
+            &format!("/api/folders/{}", parent.folder.id),
+            &json!({ "name": "Archive" }),
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(rename_resp.status(), StatusCode::NO_CONTENT);
+
+    let root_contents = app.get("/api/folders/root/contents", Some(&token)).await?;
+    assert_eq!(root_contents.status(), StatusCode::OK);
+    let root_body = body_to_vec(root_contents.into_body()).await?;
+    let root: FolderContents = serde_json::from_slice(&root_body)?;
+    let renamed = root
+        .subfolders
+        .iter()
+        .find(|f| f.id == parent.folder.id)
+        .expect("renamed folder present");
+    assert_eq!(renamed.name, "Archive");
+
+    let folders_only = app
+        .get(
+            &format!(
+                "/api/folders/{}/contents?include_documents=false",
+                parent.folder.id
+            ),
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(folders_only.status(), StatusCode::OK);
+    let folders_only_body = body_to_vec(folders_only.into_body()).await?;
+    let folders_only_contents: FolderContents = serde_json::from_slice(&folders_only_body)?;
+    assert!(folders_only_contents.documents.is_empty());
+
+    let child_contents = app
+        .get(
+            &format!("/api/folders/{}/contents", child.folder.id),
+            Some(&token),
+        )
+        .await?;
+    assert_eq!(child_contents.status(), StatusCode::OK);
+    let child_contents_body = body_to_vec(child_contents.into_body()).await?;
+    let child_details: FolderContents = serde_json::from_slice(&child_contents_body)?;
+    let child_folder = child_details.folder.expect("child folder info");
+    assert_eq!(child_folder.name, "Q1");
+
+    app.cleanup().await?;
+    Ok(())
+}

backend/tests/tags_flow.rs

@@ -21,11 +21,16 @@ struct DocumentInfo {
 #[derive(Deserialize)]
 struct TagInfo {
     label: String,
+    #[allow(dead_code)]
+    color: Option<String>,
 }
 
 #[derive(Deserialize)]
 struct TagResponse {
     id: Uuid,
+    label: String,
+    color: Option<String>,
+    usage_count: i64,
 }
 
 #[derive(Serialize)]
@@ -75,6 +80,53 @@ async fn tag_assignment_flow() -> Result<()> {
     assert_eq!(create_tag.status(), StatusCode::OK);
     let body = body_to_vec(create_tag.into_body()).await?;
     let tag: TagResponse = serde_json::from_slice(&body)?;
+    assert_eq!(tag.label, "Important");
+    assert_eq!(tag.color.as_deref(), Some("#FF0000"));
+    assert_eq!(tag.usage_count, 0);
+
+    let update = app
+        .patch_json(
+            &format!("/api/tags/{}", tag.id),
+            &serde_json::json!({
+                "label": "Critical",
+                "color": "#00FF00"
+            }),
+            Some(&token),
+        )
+        .await?;
+    let updated_status = update.status();
+    let updated_body = body_to_vec(update.into_body()).await?;
+    if updated_status != StatusCode::OK {
+        panic!(
+            "update tag failed: {}",
+            String::from_utf8_lossy(&updated_body)
+        );
+    }
+    let updated: TagResponse = serde_json::from_slice(&updated_body)?;
+    assert_eq!(updated.label, "Critical");
+    assert_eq!(updated.color.as_deref(), Some("#00FF00"));
+    assert_eq!(updated.usage_count, 0);
+
+    let clear_color = app
+        .patch_json(
+            &format!("/api/tags/{}", tag.id),
+            &serde_json::json!({
+                "color": null
+            }),
+            Some(&token),
+        )
+        .await?;
+    let cleared_status = clear_color.status();
+    let cleared_body = body_to_vec(clear_color.into_body()).await?;
+    if cleared_status != StatusCode::OK {
+        panic!(
+            "clear color failed: {}",
+            String::from_utf8_lossy(&cleared_body)
+        );
+    }
+    let cleared: TagResponse = serde_json::from_slice(&cleared_body)?;
+    assert_eq!(cleared.color, None);
+    assert_eq!(cleared.usage_count, 0);
 
     let assign = app
         .post_json(
@@ -97,7 +149,7 @@ async fn tag_assignment_flow() -> Result<()> {
     let refreshed_body = body_to_vec(refreshed.into_body()).await?;
     let refreshed_detail: DocumentDetail = serde_json::from_slice(&refreshed_body)?;
     assert_eq!(refreshed_detail.document.tags.len(), 1);
-    assert_eq!(refreshed_detail.document.tags[0].label, "Important");
+    assert_eq!(refreshed_detail.document.tags[0].label, "Critical");
 
     let remove = app
         .delete(

docker-compose.test.yml

@@ -2,15 +2,70 @@ services:
   postgres-test:
     image: postgres:16-alpine
     environment:
-      POSTGRES_USER: paperless
+      POSTGRES_USER: papercrate
-      POSTGRES_PASSWORD: paperless_test
+      POSTGRES_PASSWORD: papercrate_test
-      POSTGRES_DB: paperless_test
+      POSTGRES_DB: papercrate_test
     ports:
       - "5433:5432"
     tmpfs:
       - /var/lib/postgresql/data
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U paperless"]
+      test: ["CMD-SHELL", "pg_isready -U papercrate -d papercrate_test"]
       interval: 5s
       timeout: 5s
       retries: 5
+
+  quickwit-test:
+    image: quickwit/quickwit:0.8.2
+    command: ["run"]
+    environment:
+      QW_ENABLE_API_AUTH: "false"
+      QW_DATA_DIR: /quickwit/data
+    ports:
+      - "7281:7280"
+    volumes:
+      - quickwit_test_data:/quickwit/data
+    healthcheck:
+      test: ["CMD", "curl", "-sf", "http://127.0.0.1:7280/api/v1/version"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  admin-bootstrap:
+    build:
+      context: ./backend
+    depends_on:
+      postgres-test:
+        condition: service_healthy
+      quickwit-test:
+        condition: service_healthy
+    environment:
+      DATABASE_URL: postgres://papercrate:papercrate_test@postgres-test:5432/papercrate_test
+      DATABASE_MAX_POOL_SIZE: 1
+      S3_BUCKET: documents
+      JWT_SECRET: change-me-super-secret
+      QUICKWIT_ENDPOINT: http://quickwit-test:7280
+      DEFAULT_TENANT_SLUG: admin
+    entrypoint: []
+    command: >
+      /bin/sh -c "
+        echo 'Running database migrations' &&
+        diesel migration run &&
+        echo 'Ensuring tenant admin exists' &&
+        if papercrate-admin list-tenants | grep -q '^admin '; then
+          echo 'tenant admin already exists';
+        else
+          papercrate-admin create-tenant admin;
+        fi &&
+        echo 'Ensuring demo user credentials' &&
+        (papercrate-admin create-user admin adminadmin || papercrate-admin set-password admin adminadmin) &&
+        echo 'Ensuring demo membership' &&
+        papercrate-admin add-user-to-tenant admin admin admin &&
+        echo 'Ensuring Quickwit index for admin tenant' &&
+        papercrate-admin quickwit-create-index admin
+      "
+    user: root
+    restart: "no"
+
+volumes:
+  quickwit_test_data:

docker-compose.yml

@@ -1,19 +1,17 @@
-version: '3.8'
-
 services:
   postgres:
     image: postgres:16-alpine
     environment:
-      POSTGRES_USER: paperless
+      POSTGRES_USER: papercrate
-      POSTGRES_PASSWORD: paperless_dev
+      POSTGRES_PASSWORD: papercrate_dev
-      POSTGRES_DB: paperless
+      POSTGRES_DB: papercrate
     ports:
       - "5432:5432"
     volumes:
       - postgres_data:/var/lib/postgresql/data
       - ./backend/migrations:/docker-entrypoint-initdb.d
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U paperless"]
+      test: ["CMD-SHELL", "pg_isready -U papercrate"]
       interval: 5s
       timeout: 5s
       retries: 5
@@ -48,6 +46,63 @@ services:
       exit 0;
       "
 
+  quickwit:
+    image: quickwit/quickwit:0.8.2
+    command: ["run"]
+    environment:
+      QW_ENABLE_API_AUTH: "false"
+      QW_DATA_DIR: /quickwit/data
+    ports:
+      - "7280:7280"
+    volumes:
+      - quickwit_data:/quickwit/data
+    healthcheck:
+      test: ["CMD", "curl", "-sf", "http://127.0.0.1:7280/api/v1/version"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  admin-bootstrap:
+    build:
+      context: ./backend
+    depends_on:
+      postgres:
+        condition: service_healthy
+      quickwit:
+        condition: service_healthy
+    environment:
+      DATABASE_URL: postgres://papercrate:papercrate_dev@postgres:5432/papercrate
+      DATABASE_MAX_POOL_SIZE: 2
+      AWS_ENDPOINT_URL: http://minio:9000
+      AWS_ACCESS_KEY_ID: minioadmin
+      AWS_SECRET_ACCESS_KEY: minioadmin
+      AWS_REGION: us-east-1
+      S3_BUCKET: documents
+      JWT_SECRET: change-me-super-secret
+      QUICKWIT_ENDPOINT: http://quickwit:7280
+      DEFAULT_TENANT_SLUG: admin
+    entrypoint: []
+    command: >
+      /bin/sh -c "
+        echo 'Running database migrations' &&
+        diesel migration run &&
+        echo 'Ensuring tenant admin exists' &&
+        if papercrate-admin list-tenants | grep -q '^admin '; then
+          echo 'tenant admin already exists';
+        else
+          papercrate-admin create-tenant admin;
+        fi &&
+        echo 'Ensuring demo user credentials' &&
+        (papercrate-admin create-user admin adminadmin || papercrate-admin set-password admin adminadmin) &&
+        echo 'Ensuring demo membership' &&
+        papercrate-admin add-user-to-tenant admin admin admin &&
+        echo 'Ensuring Quickwit index for admin tenant' &&
+        papercrate-admin quickwit-create-index admin
+      "
+    user: root
+    restart: "no"
+
 volumes:
   postgres_data:
   minio_data:
+  quickwit_data:

docs/api.txt

@@ -0,0 +1,68 @@
+Papercrate REST API
+===================
+
+Unless noted otherwise, endpoints below require a valid `Authorization: Bearer <token>` header.
+
+Authentication
+--------------
+- POST /api/auth/login - Exchange username/password for an access token and refresh cookie (public).
+- POST /api/auth/refresh - Rotate the refresh cookie and return a new access token (public, requires refresh cookie).
+- POST /api/auth/logout - Revoke the caller's refresh tokens and clear the cookie.
+- GET  /api/auth/me - Return the authenticated principal payload.
+
+Health
+------
+- GET  /api/health - Lightweight liveness probe (no authentication required).
+
+Documents
+---------
+- GET  /api/documents - List or search documents. Optional filters: `folder_id` (defaults to root when omitted), `include_deleted`, `include_descendants` (defaults to true when a `folder_id` is provided and no other override is supplied), `query` (Quickwit full-text), `tags` (comma-separated tag UUIDs), and `correspondents` (comma-separated correspondent UUIDs). Each entry includes tags, correspondent assignments, and current version info.
+- GET  /api/documents/check?checksum=<sha256> - Lightweight checksum preflight. Returns `exists=false` when no document with the supplied SHA-256 checksum is present; otherwise returns `exists=true` plus the current document metadata.
+- POST /api/documents - Upload a document via multipart form-data. Required field: `file`. Optional fields: `title`, `folder_id`, JSON `metadata`, JSON array `tag_ids`, JSON array `correspondents` (each with `correspondent_id` and `role`), and `issued_at` (RFC3339). When `title` is supplied, the stored filename becomes `<title><original_extension>`. Include `skip_existing=true` to receive `204 No Content` instead of reusing a matching document.
+- POST /api/documents/bulk/move - Move multiple documents to a target folder.
+- POST /api/documents/bulk/tags - Add or remove tags across multiple documents.
+- POST /api/documents/bulk/correspondents - Bulk correspondent actions. Default `action=add` replaces existing assignments for the provided roles before adding the supplied correspondents; `action=remove` drops the specified correspondent/role pairs.
+- POST /api/documents/bulk/reanalyze - Queue re-analysis jobs for selected documents.
+- GET  /api/documents/:id - Retrieve metadata and current version details for a document.
+- PATCH /api/documents/:id - Update document metadata (currently title).
+- DELETE /api/documents/:id - Soft-delete a document.
+- GET  /api/documents/:id/download - Create a pre-signed download URL for the current version.
+- PATCH /api/documents/:id/folder - Move a document to another folder.
+- POST /api/documents/:id/tags - Assign one or more tags to a document.
+- DELETE /api/documents/:id/tags/:tag_id - Remove a single tag from a document.
+- POST /api/documents/:id/correspondents - Assign correspondents to roles (`assignments[]` with `correspondent_id` and `role`; optional `replace=true` overwrites existing assignments for those roles). Valid roles: `sender`, `receiver`, `other`.
+- DELETE /api/documents/:id/correspondents/:correspondent_id - Remove a correspondent assignment (requires `role` query string).
+
+Document Assets
+---------------
+- GET  /api/documents/:id/assets - List generated assets for the current version.
+- POST /api/documents/:id/assets - Request (re)generation of document assets; accepts optional `force` query flag.
+- GET  /api/assets/:asset_id - Fetch asset metadata plus a presigned URL for a range of objects (query params: `start` and `limit`, defaulting to the first object).
+
+Downloads
+---------
+- GET  /download/:token - Follow a one-time download token; redirects to a pre-signed URL (public token required).
+
+Folders
+-------
+- POST /api/folders - Create a folder (optionally under a parent).
+- POST /api/folders/path - Ensure a nested folder path exists, creating missing segments.
+- GET  /api/folders/:id - Fetch folder metadata.
+- GET  /api/folders/:id/contents - List subfolders and documents inside a folder; use `root` for the workspace root.
+- DELETE /api/folders/:id - Soft-delete a folder.
+- PATCH /api/folders/:id - Update a folder's parent (`parent_id`) and/or rename it (`name`).
+- GET  /api/docs/openapi.json - Generated OpenAPI specification (JSON).
+
+Tags
+----
+- GET  /api/tags - List all tags with usage counts.
+- POST /api/tags - Create a new tag.
+- PATCH /api/tags/:id - Update a tag's label or color.
+- DELETE /api/tags/:id - Remove a tag; fails with 400 if still assigned to any document.
+
+Correspondents
+--------------
+- GET  /api/correspondents - List correspondents with usage totals and per-role counts (roles: `sender`, `receiver`, `other`).
+- POST /api/correspondents - Create a correspondent (name + optional metadata JSON).
+- PATCH /api/correspondents/:id - Update name and/or metadata.
+- DELETE /api/correspondents/:id - Remove a correspondent; fails with 400 if referenced by any document.

docs/testing.md

@@ -6,10 +6,10 @@ The backend integration tests talk to a real Postgres database. To spin up an ep
 docker compose -f docker-compose.test.yml up -d
 ```
 
-This starts Postgres on port `5433` with the database/user both named `paperless` and password `paperless_test`. Point the test harness at it:
+This starts Postgres on port `5433` with the database/user both named `papercrate` and password `papercrate_test`. Point the test harness at it:
 
 ```bash
-export TEST_DATABASE_URL=postgres://paperless:paperless_test@localhost:5433/paperless_test
+export TEST_DATABASE_URL=postgres://papercrate:papercrate_test@localhost:5433/papercrate_test
 ```
 
 Run the tests as usual:

frontend/Dockerfile

@@ -0,0 +1,25 @@
+# syntax=docker/dockerfile:1
+
+FROM node:20-alpine AS build
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+RUN npm ci --no-audit --no-fund
+
+COPY . .
+RUN npm run build
+
+FROM nginx:alpine
+WORKDIR /usr/share/nginx/html
+
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=build /app/dist ./
+
+ENV API_BASE_URL=""
+
+COPY docker-entrypoint.sh /docker-entrypoint.sh
+RUN chmod +x /docker-entrypoint.sh
+
+EXPOSE 80
+ENTRYPOINT ["/docker-entrypoint.sh"]
+CMD ["nginx", "-g", "daemon off;"]

frontend/README.md

@@ -1,6 +1,6 @@
-# Paperless-NEO Frontend
+# Papercrate Frontend
 
-A minimal Webpack-powered SPA to interact with the Paperless-NEO Milestone 1 backend.
+A minimal Webpack-powered SPA to interact with the Papercrate Milestone 1 backend.
 
 ## Prerequisites
 
@@ -41,3 +41,7 @@ npm run build
 - Tag management (create/assign/remove) from the detail panel
 - Login via the seeded admin account (`admin` / `adminadmin`) with stored JWT session
 - Inline status banner for quick feedback on API interactions
+
+## Assets
+
+- The folder icon (`src/assets/folder.svg`) is derived from the Adwaita icon theme by the [GNOME Project](http://www.gnome.org/).

frontend/docker-entrypoint.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+set -euo pipefail
+
+API_BASE_URL_TRIMMED="${API_BASE_URL:-}"
+API_BASE_URL_TRIMMED="${API_BASE_URL_TRIMMED%%/}"
+
+cat <<CONFIG > /usr/share/nginx/html/config.js
+window.__PAPERCRATE_API_BASE_URL = "${API_BASE_URL_TRIMMED}";
+CONFIG
+
+exec "$@"

frontend/nginx.conf

@@ -0,0 +1,11 @@
+server {
+    listen 80;
+    server_name _;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location / {
+        try_files $uri /index.html;
+    }
+}

frontend/package-lock.json

@@ -1,13 +1,14 @@
 {
-  "name": "paperless-neo-frontend",
+  "name": "papercrate-frontend",
   "version": "0.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "paperless-neo-frontend",
+      "name": "papercrate-frontend",
       "version": "0.1.0",
       "dependencies": {
+        "@tabler/icons-react": "3.11.0",
         "axios": "1.7.7",
         "react": "18.3.1",
         "react-dom": "18.3.1",
@@ -17,6 +18,7 @@
         "@babel/core": "7.26.0",
         "@babel/preset-env": "7.26.0",
         "@babel/preset-react": "7.26.3",
+        "@svgr/webpack": "8.1.0",
         "babel-loader": "9.2.1",
         "css-loader": "7.1.2",
         "dotenv": "16.4.5",
@@ -640,6 +642,22 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/plugin-syntax-typescript": {
+      "version": "7.27.1",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-typescript/-/plugin-syntax-typescript-7.27.1.tgz",
+      "integrity": "sha512-xfYCBMxveHrRMnAWl1ZlPXOZjzkN82THFvLhQhFXFt81Z5HnN+EtUkZhv/zcKpmT3fzmWZB0ywiBrbC3vogbwQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-plugin-utils": "^7.27.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0-0"
+      }
+    },
     "node_modules/@babel/plugin-syntax-unicode-sets-regex": {
       "version": "7.18.6",
       "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-unicode-sets-regex/-/plugin-syntax-unicode-sets-regex-7.18.6.tgz",
@@ -1299,6 +1317,22 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/plugin-transform-react-constant-elements": {
+      "version": "7.27.1",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-react-constant-elements/-/plugin-transform-react-constant-elements-7.27.1.tgz",
+      "integrity": "sha512-edoidOjl/ZxvYo4lSBOQGDSyToYVkTAwyVoa2tkuYTSmjrB1+uAedoL5iROVLXkxH+vRgA7uP4tMg2pUJpZ3Ug==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-plugin-utils": "^7.27.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0-0"
+      }
+    },
     "node_modules/@babel/plugin-transform-react-display-name": {
       "version": "7.28.0",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-react-display-name/-/plugin-transform-react-display-name-7.28.0.tgz",
@@ -1498,6 +1532,26 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/plugin-transform-typescript": {
+      "version": "7.28.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-typescript/-/plugin-transform-typescript-7.28.0.tgz",
+      "integrity": "sha512-4AEiDEBPIZvLQaWlc9liCavE0xRM0dNca41WtBeM3jgFptfUOSG9z0uteLhq6+3rq+WB6jIvUwKDTpXEHPJ2Vg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-annotate-as-pure": "^7.27.3",
+        "@babel/helper-create-class-features-plugin": "^7.27.1",
+        "@babel/helper-plugin-utils": "^7.27.1",
+        "@babel/helper-skip-transparent-expression-wrappers": "^7.27.1",
+        "@babel/plugin-syntax-typescript": "^7.27.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0-0"
+      }
+    },
     "node_modules/@babel/plugin-transform-unicode-escapes": {
       "version": "7.27.1",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-unicode-escapes/-/plugin-transform-unicode-escapes-7.27.1.tgz",
@@ -1695,6 +1749,26 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/preset-typescript": {
+      "version": "7.27.1",
+      "resolved": "https://registry.npmjs.org/@babel/preset-typescript/-/preset-typescript-7.27.1.tgz",
+      "integrity": "sha512-l7WfQfX0WK4M0v2RudjuQK4u99BS6yLHYEmdtVPP7lKV013zr9DygFuWNlnbvQ9LR+LS0Egz/XAvGx5U9MX0fQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-plugin-utils": "^7.27.1",
+        "@babel/helper-validator-option": "^7.27.1",
+        "@babel/plugin-syntax-jsx": "^7.27.1",
+        "@babel/plugin-transform-modules-commonjs": "^7.27.1",
+        "@babel/plugin-transform-typescript": "^7.27.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0-0"
+      }
+    },
     "node_modules/@babel/template": {
       "version": "7.27.2",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.27.2.tgz",
@@ -1963,6 +2037,326 @@
         "node": ">=14.0.0"
       }
     },
+    "node_modules/@svgr/babel-plugin-add-jsx-attribute": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/@svgr/babel-plugin-add-jsx-attribute/-/babel-plugin-add-jsx-attribute-8.0.0.tgz",
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+        "node": ">=14"
+      },
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+        "type": "github",
+        "url": "https://github.com/sponsors/gregberge"
+      },
+      "peerDependencies": {
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+      }
+    },
+    "node_modules/@svgr/babel-plugin-remove-jsx-attribute": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/@svgr/babel-plugin-remove-jsx-attribute/-/babel-plugin-remove-jsx-attribute-8.0.0.tgz",
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+    "node_modules/svgo/node_modules/domhandler": {
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-5.0.3.tgz",
+      "integrity": "sha512-cgwlv/1iFQiFnU96XXgROh8xTeetsnJiDsTc7TYCLFd9+/WNkIqPTxiM/8pSd8VIrhXGTf1Ny1q1hquVqDJB5w==",
+      "dev": true,
+      "license": "BSD-2-Clause",
+      "dependencies": {
+        "domelementtype": "^2.3.0"
+      },
+      "engines": {
+        "node": ">= 4"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/domhandler?sponsor=1"
+      }
+    },
+    "node_modules/svgo/node_modules/domutils": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/domutils/-/domutils-3.2.2.tgz",
+      "integrity": "sha512-6kZKyUajlDuqlHKVX1w7gyslj9MPIXzIFiz/rGu35uC1wMi+kMhQwGhl4lt9unC9Vb9INnY9Z3/ZA3+FhASLaw==",
+      "dev": true,
+      "license": "BSD-2-Clause",
+      "dependencies": {
+        "dom-serializer": "^2.0.0",
+        "domelementtype": "^2.3.0",
+        "domhandler": "^5.0.3"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/domutils?sponsor=1"
+      }
+    },
+    "node_modules/svgo/node_modules/entities": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz",
+      "integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==",
+      "dev": true,
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=0.12"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/entities?sponsor=1"
+      }
+    },
     "node_modules/tapable": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/tapable/-/tapable-2.3.0.tgz",

frontend/package.json

@@ -1,14 +1,15 @@
 {
-  "name": "paperless-neo-frontend",
+  "name": "papercrate-frontend",
   "version": "0.1.0",
   "private": true,
-  "description": "Rudimentary Webpack SPA for Paperless-NEO Milestone 1",
+  "description": "Rudimentary Webpack SPA for Papercrate Milestone 1",
   "scripts": {
     "dev": "webpack serve --mode development --open",
     "build": "webpack --mode production",
     "lint": "echo \"No linting configured\""
   },
   "dependencies": {
+    "@tabler/icons-react": "3.11.0",
     "axios": "1.7.7",
     "react": "18.3.1",
     "react-dom": "18.3.1",
@@ -25,6 +26,7 @@
     "style-loader": "4.0.0",
     "webpack": "5.95.0",
     "webpack-cli": "5.1.4",
-    "webpack-dev-server": "5.1.0"
+    "webpack-dev-server": "5.1.0",
+    "@svgr/webpack": "8.1.0"
   }
 }

frontend/public/config.js

@@ -0,0 +1 @@
+window.__PAPERCRATE_API_BASE_URL = window.__PAPERCRATE_API_BASE_URL || '';

frontend/src/appShellContext.js

@@ -0,0 +1,12 @@
+import React from 'react';
+
+export const AppShellContext = React.createContext(null);
+
+export const useAppShell = () => {
+  const context = React.useContext(AppShellContext);
+  if (!context) {
+    throw new Error('AppShellContext not found. Ensure routes are nested under AppLayout.');
+  }
+  return context;
+};
+

frontend/src/asset_manager.js

@@ -0,0 +1,419 @@
+export const getAssetFromGroup = (assets, assetType) => {
+  if (!assetType || !assets) {
+    return null;
+  }
+
+  if (Array.isArray(assets)) {
+    return assets.find((entry) => entry?.asset_type === assetType) || null;
+  }
+
+  return assets?.[assetType] || null;
+};
+
+export const getAssetFromVersion = (currentVersion, assetType) => {
+  if (!currentVersion) {
+    return null;
+  }
+  return getAssetFromGroup(currentVersion.assets, assetType);
+};
+
+const normalizeAssetObjects = (objects) => {
+  if (!Array.isArray(objects)) {
+    return [];
+  }
+  return objects
+    .filter((entry) => Number.isInteger(entry?.ordinal))
+    .slice()
+    .sort((a, b) => a.ordinal - b.ordinal);
+};
+
+const mergeAssetObjects = (existingObjects, incomingObjects) => {
+  const merged = new Map();
+
+  normalizeAssetObjects(existingObjects).forEach((entry) => {
+    merged.set(entry.ordinal, { ...entry });
+  });
+
+  normalizeAssetObjects(incomingObjects).forEach((entry) => {
+    const current = merged.get(entry.ordinal) || {};
+    merged.set(entry.ordinal, { ...current, ...entry });
+  });
+
+  return [...merged.entries()]
+    .sort((a, b) => a[0] - b[0])
+    .map(([, value]) => value);
+};
+
+export class AssetView {
+  constructor(asset) {
+    this.asset = asset || null;
+    this._objectsRef = null;
+    this._sortedObjects = [];
+  }
+
+  getCardinality() {
+    if (!this.asset) {
+      return 0;
+    }
+
+    const reported = Number(this.asset.cardinality);
+    if (Number.isFinite(reported) && reported > 0) {
+      return reported;
+    }
+
+    const objectsCount = this.getObjects().length;
+    if (objectsCount > 0) {
+      return objectsCount;
+    }
+
+    return this.asset.metadata ? 1 : 0;
+  }
+
+  getObjects() {
+    if (!this.asset || !Array.isArray(this.asset.objects) || this.asset.objects.length === 0) {
+      return [];
+    }
+
+    if (this._objectsRef === this.asset.objects) {
+      return this._sortedObjects;
+    }
+
+    this._objectsRef = this.asset.objects;
+    this._sortedObjects = normalizeAssetObjects(this.asset.objects);
+    return this._sortedObjects;
+  }
+
+  getObject(ordinal = 1) {
+    const fromObjects = this.getObjects().find((entry) => entry.ordinal === ordinal);
+    if (fromObjects) {
+      return fromObjects;
+    }
+
+    if (ordinal === 1 && this.asset) {
+      if (this.asset.url || this.asset.metadata) {
+        return {
+          ordinal: 1,
+          url: this.asset.url || null,
+          metadata: this.asset.metadata || null,
+          expires_at: this.asset.expiresAt ?? null,
+        };
+      }
+    }
+
+    return null;
+  }
+
+  getPrimaryObject() {
+    return this.getObject(1);
+  }
+
+  getPrimaryMetadata() {
+    return this.getPrimaryObject()?.metadata || null;
+  }
+
+  getPrimaryUrl() {
+    return this.getPrimaryObject()?.url || null;
+  }
+
+  hasObject(ordinal) {
+    return Boolean(this.getObject(ordinal));
+  }
+}
+
+export const createAssetView = (asset) => new AssetView(asset);
+
+export const resolveDocumentAssetUrl = (
+  doc,
+  type,
+  { ensureAssetUrl, getAsset, ensureOptions, objectOrdinal = 1 } = {},
+) => {
+  if (!doc || !type) {
+    return null;
+  }
+  const asset = typeof getAsset === 'function' ? getAsset(doc, type) : null;
+  if (!asset) {
+    return null;
+  }
+  const view = createAssetView(asset);
+  const object = view.getObject(objectOrdinal);
+  const url = object?.url || (objectOrdinal === 1 ? view.getPrimaryUrl() : null);
+  const expiresAt = typeof object?.expires_at === 'number'
+    ? object.expires_at
+    : objectOrdinal === 1 && typeof asset.expiresAt === 'number'
+      ? asset.expiresAt
+      : null;
+  const now = Date.now();
+  if (url && (!expiresAt || expiresAt > now)) {
+    return url;
+  }
+  if (doc.id && asset.id && typeof ensureAssetUrl === 'function') {
+    const force = Boolean(url && expiresAt && expiresAt <= now);
+    const options = {
+      force,
+      start: objectOrdinal,
+      limit: 1,
+      ...(ensureOptions || {}),
+    };
+    if (!options.start) {
+      options.start = objectOrdinal;
+    }
+    if (!options.limit) {
+      options.limit = 1;
+    }
+    ensureAssetUrl(doc.id, asset, options).catch(() => {});
+  }
+  return null;
+};
+
+class AssetManager {
+  constructor({ api, assetPresignTtlMs }) {
+    this.api = api;
+    this.assetPresignTtlMs = assetPresignTtlMs;
+    this.assetCache = new Map();
+    this.assetInflight = new Map();
+  }
+
+  setApi(api) {
+    this.api = api;
+  }
+
+  rememberAsset(entry) {
+    if (entry?.id) {
+      this.assetCache.set(entry.id, entry);
+    }
+  }
+
+  hydrateAsset(asset) {
+    if (!asset || !asset.id) {
+      return asset;
+    }
+    const cached = this.assetCache.get(asset.id);
+    if (!cached) {
+      const normalized = mergeAssetObjects(null, asset.objects);
+      if (normalized.length) {
+        return { ...asset, objects: normalized };
+      }
+      return asset;
+    }
+    const merged = { ...cached, ...asset };
+    if (cached.url && !asset.url) {
+      merged.url = cached.url;
+    }
+    if (cached.expiresAt) {
+      const cachedExpires = Number(cached.expiresAt) || null;
+      const assetExpires = Number(asset.expiresAt) || null;
+      if (!assetExpires || (cachedExpires && cachedExpires > assetExpires)) {
+        merged.expiresAt = cachedExpires;
+      }
+    }
+    const mergedObjects = mergeAssetObjects(cached.objects, asset.objects);
+    if (mergedObjects.length) {
+      merged.objects = mergedObjects;
+    }
+    return merged;
+  }
+
+  hydrateDocument(document) {
+    if (!document) {
+      return document;
+    }
+
+    const currentVersion = document.current_version || null;
+    if (!currentVersion) {
+      return document;
+    }
+
+    let changed = false;
+    let nextAssets = currentVersion.assets;
+
+    if (nextAssets && !Array.isArray(nextAssets)) {
+      const hydrated = {};
+      Object.keys(nextAssets).forEach((key) => {
+        hydrated[key] = this.hydrateAsset(nextAssets[key]);
+        if (hydrated[key] !== nextAssets[key]) {
+          changed = true;
+        }
+      });
+      if (changed) {
+        nextAssets = { ...nextAssets, ...hydrated };
+      }
+    } else if (Array.isArray(nextAssets)) {
+      const hydratedList = nextAssets.map((item) => this.hydrateAsset(item));
+      if (
+        hydratedList.length !== nextAssets.length ||
+        hydratedList.some((item, index) => item !== nextAssets[index])
+      ) {
+        changed = true;
+        nextAssets = hydratedList;
+      }
+    }
+
+    if (!changed) {
+      return document;
+    }
+
+    const nextCurrentVersion = { ...currentVersion, assets: nextAssets };
+    return { ...document, current_version: nextCurrentVersion };
+  }
+
+  hydrateDocuments(documents) {
+    if (!Array.isArray(documents)) {
+      return documents;
+    }
+    return documents.map((doc) => this.hydrateDocument(doc));
+  }
+
+  hydrateDetail(detail) {
+    if (!detail) {
+      return detail;
+    }
+    let changed = false;
+    const next = { ...detail };
+
+    if (detail.document) {
+      const hydratedDocument = this.hydrateDocument(detail.document);
+      if (hydratedDocument !== detail.document) {
+        next.document = hydratedDocument;
+        changed = true;
+      }
+    }
+
+    if (Array.isArray(detail.assets)) {
+      const hydratedAssets = detail.assets.map((item) => this.hydrateAsset(item));
+      if (
+        hydratedAssets.length !== detail.assets.length ||
+        hydratedAssets.some((item, index) => item !== detail.assets[index])
+      ) {
+        next.assets = hydratedAssets;
+        changed = true;
+      }
+    }
+
+    return changed ? next : detail;
+  }
+
+  hydrateFolderContents(contents) {
+    if (!contents) {
+      return contents;
+    }
+    const next = { ...contents };
+    if (Array.isArray(contents.documents)) {
+      next.documents = this.hydrateDocuments(contents.documents);
+    }
+    if (contents.document) {
+      next.document = this.hydrateDocument(contents.document);
+    }
+    return next;
+  }
+
+  ensureAsset(documentId, asset, { force = false, start = null, limit = null } = {}) {
+    if (!documentId || !asset?.id) {
+      return Promise.resolve(asset || null);
+    }
+
+    const requestedStart = Number.isInteger(start) && start > 0 ? start : 1;
+    const requestedLimit = Number.isInteger(limit) && limit > 0 ? limit : 1;
+    const requestedEnd = requestedStart + requestedLimit - 1;
+
+    const baseAsset = this.assetCache.get(asset.id) || asset;
+    const view = createAssetView(baseAsset);
+    const assetExpiresAt = typeof baseAsset.expiresAt === 'number' ? baseAsset.expiresAt : null;
+    const now = Date.now();
+
+    const isOrdinalSatisfied = (ordinal) => {
+      const object = view.getObject(ordinal);
+      if (!object) {
+        return false;
+      }
+      if (!object.url) {
+        return false;
+      }
+      if (typeof object.expires_at === 'number') {
+        return object.expires_at > now;
+      }
+      if (ordinal === 1 && baseAsset.url && (!assetExpiresAt || assetExpiresAt > now)) {
+        return true;
+      }
+      return true;
+    };
+
+    let needsFetch = force;
+    if (!needsFetch) {
+      for (let ordinal = requestedStart; ordinal <= requestedEnd; ordinal += 1) {
+        if (!isOrdinalSatisfied(ordinal)) {
+          needsFetch = true;
+          break;
+        }
+      }
+    }
+
+    if (!needsFetch) {
+      this.rememberAsset(baseAsset);
+      return Promise.resolve(baseAsset);
+    }
+
+    const inflightKey = `${documentId}:${asset.id}:${start ?? 'd'}:${limit ?? 'd'}`;
+    if (!force && this.assetInflight.has(inflightKey)) {
+      return this.assetInflight.get(inflightKey);
+    }
+
+    if (!this.api) {
+      return Promise.reject(new Error('AssetManager API client is not configured.'));
+    }
+
+    const params = {};
+    if (Number.isInteger(start) && start > 0) {
+      params.start = start;
+    }
+    if (Number.isInteger(limit) && limit > 0) {
+      params.limit = limit;
+    }
+
+    const requestConfig = Object.keys(params).length ? { params } : undefined;
+
+    const request = this.api
+      .get(`/assets/${asset.id}`, requestConfig)
+      .then(({ data }) => {
+        const incomingObjects = Array.isArray(data.objects) ? data.objects : [];
+        const cachedEntry = this.assetCache.get(asset.id) || baseAsset;
+        const mergedObjects = mergeAssetObjects(cachedEntry?.objects, incomingObjects);
+        const combined = { ...cachedEntry, ...asset, ...data, objects: mergedObjects };
+        const view = createAssetView(combined);
+        const primaryObject = view.getPrimaryObject();
+        const expiresAt = typeof primaryObject?.expires_at === 'number'
+          ? primaryObject.expires_at
+          : Date.now() + this.assetPresignTtlMs;
+        const cardinality = (() => {
+          const reported = Number(data.cardinality ?? asset.cardinality ?? cachedEntry?.cardinality);
+          const objectsCount = mergedObjects.length;
+          if (Number.isFinite(reported) && reported > 0) {
+            return Math.max(reported, objectsCount) || null;
+          }
+          return objectsCount || null;
+        })();
+
+        const entry = {
+          ...combined,
+          cardinality,
+          url: view.getPrimaryUrl(),
+          expiresAt,
+        };
+
+        this.rememberAsset(entry);
+        return entry;
+      })
+      .finally(() => {
+        this.assetInflight.delete(inflightKey);
+      });
+
+    this.assetInflight.set(inflightKey, request);
+    return request;
+  }
+
+  reset() {
+    this.assetCache.clear();
+    this.assetInflight.clear();
+  }
+}
+
+export default AssetManager;

frontend/src/assets/folder.svg

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg viewBox="0 0 128 128" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <linearGradient id="a" gradientTransform="matrix(0.45451 0 0 0.455522 -1210.292114 616.172607)" gradientUnits="userSpaceOnUse" x1="2689.251953" x2="2918.069824" y1="-1106.802979" y2="-1106.802979">
+        <stop offset="0" stop-color="#62a0ea"/>
+        <stop offset="0.0576991" stop-color="#afd4ff"/>
+        <stop offset="0.122204" stop-color="#62a0ea"/>
+        <stop offset="0.873306" stop-color="#62a0ea"/>
+        <stop offset="0.955997" stop-color="#c0d5ea"/>
+        <stop offset="1" stop-color="#62a0ea"/>
+    </linearGradient>
+    <path d="m 21.976562 12 c -5.527343 0 -9.976562 4.460938 -9.976562 10 v 86.03125 c 0 5.542969 4.449219 10 9.976562 10 h 84.042969 c 5.53125 0 9.980469 -4.457031 9.980469 -10 v -72.085938 c 0 -6.628906 -5.359375 -12 -11.972656 -12 h -46.027344 c -2.453125 0 -4.695312 -1.386718 -5.796875 -3.582031 l -1.503906 -2.992187 c -1.65625 -3.292969 -5.019531 -5.371094 -8.699219 -5.371094 z m 0 0" fill="#438de6"/>
+    <path d="m 65.976562 36 c -2.746093 0 -5.226562 1.101562 -7.027343 2.890625 c -2.273438 2.253906 -5.382813 5.109375 -8.632813 5.109375 h -28.339844 c -5.527343 0 -9.976562 4.460938 -9.976562 10 v 54.03125 c 0 5.542969 4.449219 10 9.976562 10 h 84.042969 c 5.53125 0 9.980469 -4.457031 9.980469 -10 v -62.03125 c 0 -5.539062 -4.449219 -10 -9.980469 -10 z m 0 0" fill="url(#a)"/>
+    <path d="m 65.976562 32 c -2.746093 0 -5.226562 1.101562 -7.027343 2.890625 c -2.273438 2.253906 -5.382813 5.109375 -8.632813 5.109375 h -28.339844 c -5.527343 0 -9.976562 4.460938 -9.976562 10 v 55.976562 c 0 5.539063 4.449219 10 9.976562 10 h 84.042969 c 5.53125 0 9.980469 -4.460937 9.980469 -10 v -63.976562 c 0 -5.539062 -4.449219 -10 -9.980469 -10 z m 0 0" fill="#a4caee"/>
+</svg>

frontend/src/assets/papercorner.svg

@@ -0,0 +1,19 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%" viewBox="0 0 128 128" xml:space="preserve" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;">
+    <defs>
+        <filter id="cornerShadow" x="-20%" y="-20%" width="200%" height="200%">
+            <feDropShadow dx="-4" dy="4" stdDeviation="8" flood-opacity="0.24"/>
+        </filter>
+        <linearGradient id="cornerGradient" gradientUnits="userSpaceOnUse" x1="32" y1="0" x2="0" y2="64">
+            <stop offset="0%" stop-color="#ffffff"/>
+            <stop offset="100%" stop-color="#f3f3f3"/>
+        </linearGradient>
+    </defs>
+    <g filter="url(#cornerShadow)">
+        <g transform="matrix(-1.81626,-1.81626,0.460023,-0.460023,180.663,203.387)">
+            <path d="M70.488,10.11L89.954,86.966L51.022,86.966L70.488,10.11Z" fill="url(#cornerGradient)"/>
+        </g>
+        <g transform="matrix(1.81626,1.81626,-0.460023,0.460023,4.6259,-132.676)">
+            <path d="M70.488,10.11L89.954,86.966L51.022,86.966L70.488,10.11Z" fill="#fdfdfd"/>
+        </g>
+    </g>
+</svg>

frontend/src/constants/correspondents.js

@@ -0,0 +1,3 @@
+export const CORRESPONDENT_ROLES = ['sender', 'receiver', 'other'];
+
+export default CORRESPONDENT_ROLES;

frontend/src/correspondents/CorrespondentsPanel.jsx

@@ -0,0 +1,240 @@
+import React, { useCallback, useState } from 'react';
+
+function CorrespondentsPanel({
+  correspondents = [],
+  onRefresh,
+  onCreate,
+  onUpdate,
+  onDelete,
+  onNotify,
+}) {
+  const [editingId, setEditingId] = useState(null);
+  const [draftName, setDraftName] = useState('');
+  const [createName, setCreateName] = useState('');
+  const [saving, setSaving] = useState(false);
+  const [creating, setCreating] = useState(false);
+  const [deletingId, setDeletingId] = useState(null);
+
+  const startEdit = useCallback((correspondent) => {
+    setEditingId(correspondent.id);
+    setDraftName(correspondent.name || '');
+  }, []);
+
+  const cancelEdit = useCallback(() => {
+    setEditingId(null);
+    setDraftName('');
+    setSaving(false);
+  }, []);
+
+  const handleSave = useCallback(async () => {
+    if (!editingId) return;
+    const trimmed = draftName.trim();
+    if (!trimmed) {
+      onNotify?.('Correspondent name cannot be empty.', 'error');
+      return;
+    }
+
+    setSaving(true);
+    try {
+      await onUpdate(editingId, { name: trimmed });
+      cancelEdit();
+    } catch (
+      // eslint-disable-next-line no-empty
+      error
+    ) {}
+  }, [editingId, draftName, onUpdate, cancelEdit, onNotify]);
+
+  const handleDelete = useCallback(
+    async (correspondent) => {
+      if (!correspondent?.id) return;
+      setDeletingId(correspondent.id);
+      try {
+        await onDelete(correspondent.id);
+        if (editingId === correspondent.id) {
+          cancelEdit();
+        }
+      } catch (
+        // eslint-disable-next-line no-empty
+        error
+      ) {
+        return;
+      } finally {
+        setDeletingId(null);
+      }
+    },
+    [onDelete, editingId, cancelEdit],
+  );
+
+  const handleCreate = useCallback(
+    async (event) => {
+      event.preventDefault();
+      const trimmed = createName.trim();
+      if (!trimmed) {
+        onNotify?.('Correspondent name cannot be empty.', 'error');
+        return;
+      }
+      setCreating(true);
+      try {
+        await onCreate({ name: trimmed });
+        setCreateName('');
+      } catch (
+        // eslint-disable-next-line no-empty
+        error
+      ) {
+        return;
+      } finally {
+        setCreating(false);
+      }
+    },
+    [createName, onCreate, onNotify],
+  );
+
+  const handleKeyDown = useCallback(
+    (event) => {
+      if (event.key === 'Enter') {
+        event.preventDefault();
+        handleSave();
+      } else if (event.key === 'Escape') {
+        event.preventDefault();
+        cancelEdit();
+      }
+    },
+    [handleSave, cancelEdit],
+  );
+
+  const renderUsage = useCallback((usage) => {
+    if (!usage) {
+      return '0';
+    }
+    const total = typeof usage.total === 'number' ? usage.total : 0;
+    const entries = usage.by_role ? Object.entries(usage.by_role) : [];
+    if (!entries.length) {
+      return total.toString();
+    }
+    const roleSummary = entries
+      .map(([role, count]) => `${role}: ${count}`)
+      .join(', ');
+    return `${total} (${roleSummary})`;
+  }, []);
+
+  return (
+    <section className="correspondents-panel column">
+      <div className="column-header">
+        <div className="column-header__titles">
+          <h2>Correspondents</h2>
+          <div className="column-subtitle">{correspondents.length} total</div>
+        </div>
+        <div className="header-actions correspondents-actions">
+          <form className="correspondents-actions__form" onSubmit={handleCreate}>
+            <input
+              type="text"
+              placeholder="New correspondent name"
+              value={createName}
+              onChange={(event) => setCreateName(event.target.value)}
+              disabled={creating}
+            />
+            <button type="submit" disabled={creating || !createName.trim()}>
+              {creating ? 'Creating…' : 'Create'}
+            </button>
+          </form>
+          <button
+            className="secondary"
+            type="button"
+            onClick={onRefresh}
+            disabled={saving || creating || Boolean(deletingId)}
+          >
+            Refresh
+          </button>
+        </div>
+      </div>
+      <div className="column-body tags-panel__body">
+        {correspondents.length === 0 ? (
+          <div className="empty-state">No correspondents created yet.</div>
+        ) : (
+          <div className="tags-table">
+            <table>
+              <thead>
+                <tr>
+                  <th scope="col">Name</th>
+                  <th scope="col" className="numeric">
+                    Usage
+                  </th>
+                  <th scope="col" className="actions">
+                    Actions
+                  </th>
+                </tr>
+              </thead>
+              <tbody>
+                {correspondents.map((correspondent) => {
+                  const isEditing = editingId === correspondent.id;
+                  return (
+                    <tr key={correspondent.id} className={isEditing ? 'editing' : ''}>
+                      <td className="tags-table__label">
+                        {isEditing ? (
+                          <input
+                            className="tags-table__label-input"
+                            value={draftName}
+                            onChange={(event) => setDraftName(event.target.value)}
+                            onKeyDown={handleKeyDown}
+                            disabled={saving}
+                            autoFocus
+                          />
+                        ) : (
+                          <span>{correspondent.name}</span>
+                        )}
+                      </td>
+                      <td className="numeric">{renderUsage(correspondent.usage)}</td>
+                      <td className="actions">
+                        {isEditing ? (
+                          <div className="tags-table__edit-controls">
+                            <button
+                              type="button"
+                              className="secondary"
+                              onClick={handleSave}
+                              disabled={saving}
+                            >
+                              Save
+                            </button>
+                            <button
+                              type="button"
+                              className="secondary"
+                              onClick={cancelEdit}
+                              disabled={saving}
+                            >
+                              Cancel
+                            </button>
+                          </div>
+                        ) : (
+                          <div className="tags-table__row-actions">
+                            <button
+                              type="button"
+                              className="secondary"
+                              onClick={() => startEdit(correspondent)}
+                              disabled={deletingId === correspondent.id}
+                            >
+                              Edit
+                            </button>
+                            <button
+                              type="button"
+                              className="danger"
+                              onClick={() => handleDelete(correspondent)}
+                              disabled={deletingId === correspondent.id}
+                            >
+                              Delete
+                            </button>
+                          </div>
+                        )}
+                      </td>
+                    </tr>
+                  );
+                })}
+              </tbody>
+            </table>
+          </div>
+        )}
+      </div>
+    </section>
+  );
+}
+
+export default CorrespondentsPanel;

frontend/src/documents/DocumentsTable.jsx

@@ -0,0 +1,840 @@
+import React, { useCallback, useEffect, useMemo, useRef } from 'react';
+import { getAssetFromVersion, resolveDocumentAssetUrl, createAssetView } from '../asset_manager';
+import { getTagColorStyle } from '../utils/colors';
+import { DownloadIcon, EditIcon, ViewListIcon, ViewGridIcon, FolderIcon } from '../ui/icons';
+
+const TAG_MIME_TYPES = ['application/x-papercrate-tag', 'text/papercrate-tag'];
+const DEFAULT_GRID_ICON_SIZE = 96;
+const DEFAULT_GRID_TITLE_SIZE = '11px';
+const LIST_ICON_SIZE = 48;
+
+const getPageCount = (doc) =>
+  Number.isFinite(doc?.current_version?.metadata?.page_count)
+    ? doc.current_version.metadata.page_count
+    : null;
+
+const DocumentThumbnailImage = ({
+  document,
+  ensureAssetUrl,
+  getDocumentAsset,
+  alt,
+  maxSize = LIST_ICON_SIZE,
+}) => {
+  const resolvedMaxSize = Math.max(1, Math.round(maxSize || 1));
+  const thumbnailAsset = useMemo(
+    () => getAssetFromVersion(document?.current_version, 'thumbnail'),
+    [document?.current_version],
+  );
+  const thumbnailView = useMemo(() => createAssetView(thumbnailAsset), [thumbnailAsset]);
+  const primaryMetadata = thumbnailView.getPrimaryMetadata() || {};
+  const assetWidth = Number(primaryMetadata?.width);
+  const assetHeight = Number(primaryMetadata?.height);
+
+  const dimensions = useMemo(() => {
+    if (!Number.isFinite(assetWidth) || assetWidth <= 0 || !Number.isFinite(assetHeight) || assetHeight <= 0) {
+      return { width: resolvedMaxSize, height: resolvedMaxSize };
+    }
+    const scale = Math.min(1, resolvedMaxSize / assetWidth, resolvedMaxSize / assetHeight);
+    return {
+      width: Math.max(1, Math.round(assetWidth * scale)),
+      height: Math.max(1, Math.round(assetHeight * scale)),
+    };
+  }, [assetWidth, assetHeight, resolvedMaxSize]);
+
+  const innerStyle = useMemo(
+    () => ({ width: `${dimensions.width}px`, height: `${dimensions.height}px` }),
+    [dimensions.height, dimensions.width],
+  );
+  const url = useMemo(
+    () =>
+      resolveDocumentAssetUrl(document, 'thumbnail', {
+        ensureAssetUrl,
+        getAsset: getDocumentAsset,
+      }),
+    [document, ensureAssetUrl, getDocumentAsset],
+  );
+
+  const pageCount = getPageCount(document);
+  const showMultiPageBadge = Number.isFinite(pageCount) && pageCount > 1;
+  const innerClasses = ['document-thumbnail-inner'];
+  if (showMultiPageBadge) {
+    innerClasses.push('document-thumbnail-inner--multipage');
+  }
+
+  return (
+    <div className="document-thumbnail-wrapper">
+      <div className={innerClasses.join(' ')} style={innerStyle}>
+        {url ? (
+          <img
+            src={url}
+            alt={alt || ''}
+            className="document-thumbnail"
+            draggable={false}
+            onDragStart={(event) => event.preventDefault()}
+          />
+        ) : (
+          <div className="thumb-placeholder">DOC</div>
+        )}
+      </div>
+    </div>
+  );
+};
+
+const DocumentsTable = ({
+  currentFolderName,
+  breadcrumbs,
+  onRefresh,
+  onShowSkeuoWorkspace = () => {},
+  onRequestCreateFolder,
+  creatingFolder = false,
+  subfolders,
+  documents,
+  searchResults,
+  isFilterActive,
+  onFolderSelect,
+  onFolderDrop,
+  onFolderDragOver,
+  onFolderDragLeave,
+  onFolderDragStart,
+  onFolderDragEnd,
+  draggedFolderId,
+  onFolderDelete,
+  selectedFolderIds = [],
+  onFolderRowClick,
+  onDocumentRowClick,
+  onDocumentOpen,
+  selectedDocumentIds,
+  focusedDocumentId,
+  focusedRowKey,
+  draggingDocumentIds = [],
+  onDocumentDragStart,
+  onDocumentDragEnd,
+  onDocumentDelete,
+  onFolderRename,
+  onDocumentRename,
+  tagLookupById,
+  onDocumentListFocus,
+  onDocumentListKeyDown,
+  onFocusedRowChange,
+  ensureAssetUrl = null,
+  getDocumentAsset = () => null,
+  getDownloadHref,
+  onTagClick,
+  isSearchLoading = false,
+  onDocumentTagDrop,
+  viewMode = 'list',
+  onViewModeChange,
+  onClearSelection,
+}) => {
+  const showingSearchResults = searchResults !== null;
+  const rows = showingSearchResults ? searchResults : documents;
+
+  const selectedSet = useMemo(
+    () => new Set(selectedDocumentIds),
+    [selectedDocumentIds],
+  );
+  const selectedFolderSet = useMemo(
+    () => new Set(selectedFolderIds || []),
+    [selectedFolderIds],
+  );
+  const draggingSet = useMemo(
+    () => new Set(draggingDocumentIds || []),
+    [draggingDocumentIds],
+  );
+  const scrollRef = useRef(null);
+  const isGridView = viewMode === 'grid';
+  const gridIconSize = DEFAULT_GRID_ICON_SIZE;
+  const handleSetViewMode = useCallback(
+    (nextMode) => {
+      if (!onViewModeChange) {
+        return;
+      }
+      onViewModeChange(nextMode);
+      if (scrollRef.current) {
+        scrollRef.current.scrollTop = 0;
+      }
+    },
+    [onViewModeChange],
+  );
+  const isTagDragEvent = useCallback((event) => {
+    const types = Array.from(event.dataTransfer?.types || []);
+    return TAG_MIME_TYPES.some((type) => types.includes(type));
+  }, []);
+  const ensureFocusedRowVisible = useCallback(() => {
+    if (!focusedRowKey) return;
+    const container = scrollRef.current;
+    if (!container) return;
+    let selector = null;
+    if (focusedRowKey.startsWith('document:')) {
+      selector = `#document-row-${focusedRowKey.slice('document:'.length)}`;
+    } else if (focusedRowKey.startsWith('folder:')) {
+      selector = `#folder-row-${focusedRowKey.slice('folder:'.length)}`;
+    }
+    if (!selector) {
+      return;
+    }
+    const row = container.querySelector(selector);
+    if (!row || !container.contains(row)) {
+      return;
+    }
+
+    const header = container.querySelector('thead');
+    const headerHeight = header ? header.getBoundingClientRect().height : 0;
+    const rowTop = row.offsetTop;
+    const rowBottom = rowTop + row.offsetHeight;
+    const visibleTop = container.scrollTop + headerHeight;
+    const visibleBottom = container.scrollTop + container.clientHeight;
+
+    if (rowTop < visibleTop) {
+      container.scrollTop = Math.max(rowTop - headerHeight, 0);
+      return;
+    }
+
+    if (rowBottom > visibleBottom) {
+      const nextScrollTop = rowBottom - container.clientHeight;
+      container.scrollTop = Math.max(nextScrollTop, 0);
+    }
+  }, [focusedRowKey]);
+
+  useEffect(() => {
+    ensureFocusedRowVisible();
+  }, [ensureFocusedRowVisible]);
+
+  const activeDescendantId = useMemo(() => {
+    if (!focusedRowKey) return undefined;
+    if (focusedRowKey.startsWith('document:')) {
+      return `document-row-${focusedRowKey.slice('document:'.length)}`;
+    }
+    if (focusedRowKey.startsWith('folder:')) {
+      return `folder-row-${focusedRowKey.slice('folder:'.length)}`;
+    }
+    return undefined;
+  }, [focusedRowKey]);
+
+  const handleDocumentTagDragOver = useCallback(
+    (event) => {
+      if (!isTagDragEvent(event)) {
+        return;
+      }
+      event.preventDefault();
+      event.dataTransfer.dropEffect = 'copy';
+      event.currentTarget.classList.add('tag-drop-target');
+    },
+    [isTagDragEvent],
+  );
+
+  const handleDocumentTagDragLeave = useCallback(
+    (event) => {
+      if (!isTagDragEvent(event)) {
+        return;
+      }
+      if (event.relatedTarget && event.currentTarget.contains(event.relatedTarget)) {
+        return;
+      }
+      event.currentTarget.classList.remove('tag-drop-target');
+    },
+    [isTagDragEvent],
+  );
+
+  const handleDocumentTagDrop = useCallback(
+    (event, documentId) => {
+      if (!isTagDragEvent(event)) {
+        return;
+      }
+      event.preventDefault();
+      event.stopPropagation();
+      event.currentTarget.classList.remove('tag-drop-target');
+      const payload =
+        event.dataTransfer.getData('application/x-papercrate-tag') ||
+        event.dataTransfer.getData('text/papercrate-tag');
+      if (!payload) {
+        return;
+      }
+      try {
+        const parsed = JSON.parse(payload);
+        if (parsed?.id && onDocumentTagDrop) {
+          onDocumentTagDrop(documentId, parsed);
+        }
+      } catch (
+        // eslint-disable-next-line no-empty
+        error
+      ) {}
+    },
+    [isTagDragEvent, onDocumentTagDrop],
+  );
+
+  const handleGridBackgroundClick = useCallback(
+    (event) => {
+      if (event.target !== event.currentTarget) {
+        return;
+      }
+      onClearSelection?.();
+    },
+    [onClearSelection],
+  );
+
+  const showDefaultEmptyState = !showingSearchResults && !subfolders.length && rows.length === 0;
+  const showListSearchEmptyState =
+    showingSearchResults && rows.length === 0 && !isGridView && !isSearchLoading;
+  const showGridSearchEmptyState =
+    isGridView && showingSearchResults && rows.length === 0 && !isSearchLoading;
+  const showSearchHint = showingSearchResults && rows.length > 0;
+
+  return (
+    <section
+      className={`documents-panel column documents-panel--view-${isGridView ? 'grid' : 'list'}`}
+    >
+      <div className="column-header">
+        <div className="column-header__titles">
+          <nav className="breadcrumb" aria-label="Folder breadcrumbs">
+            {breadcrumbs.map((crumb, index) => {
+              const isLast = index === breadcrumbs.length - 1;
+              return (
+                <span key={crumb.id} className="breadcrumb-item">
+                  {isLast ? (
+                    <span className="breadcrumb-current">{crumb.name}</span>
+                  ) : (
+                    <a
+                      href="#"
+                      onClick={(event) => {
+                        event.preventDefault();
+                        onFolderSelect(crumb.id);
+                      }}
+                    >
+                      {crumb.name}
+                    </a>
+                  )}
+                  {!isLast && <span className="breadcrumb-separator">›</span>}
+                </span>
+              );
+            })}
+          </nav>
+          {showingSearchResults && (
+            <div className="column-subtitle">Search results</div>
+          )}
+        </div>
+        <div className="header-actions">
+          <div className="view-toggle" role="group" aria-label="Change view">
+            <button
+              type="button"
+              className={`view-toggle__button${isGridView ? '' : ' active'}`}
+              onClick={() => handleSetViewMode('list')}
+              aria-pressed={!isGridView}
+              title="List view"
+            >
+              <ViewListIcon className="view-toggle__icon" size={18} />
+            </button>
+            <button
+              type="button"
+              className={`view-toggle__button${isGridView ? ' active' : ''}`}
+              onClick={() => handleSetViewMode('grid')}
+              aria-pressed={isGridView}
+              title="Icons view"
+            >
+              <ViewGridIcon className="view-toggle__icon" size={18} />
+            </button>
+          </div>
+          <button
+            type="button"
+            onClick={onRequestCreateFolder}
+            disabled={creatingFolder}
+          >
+            {creatingFolder ? 'Creating…' : 'New folder'}
+          </button>
+          <button className="secondary" onClick={onRefresh}>
+            Refresh
+          </button>
+          <button className="secondary" type="button" onClick={onShowSkeuoWorkspace}>
+            Desk View
+          </button>
+        </div>
+      </div>
+      {showDefaultEmptyState && (
+        <div className="empty-state">
+          Drop files anywhere or onto a folder to upload documents.
+        </div>
+      )}
+      {showGridSearchEmptyState && (
+        <div className="empty-state empty-state--global">
+          No documents match the current filters.
+        </div>
+      )}
+      <div className="column-body">
+        <div
+          ref={scrollRef}
+          className="documents-scroll"
+          onFocus={(event) => {
+            if (event.target === scrollRef.current) {
+              onDocumentListFocus?.();
+            }
+          }}
+          onKeyDown={(event) => {
+            if (event.target !== scrollRef.current) {
+              return;
+            }
+            if (onDocumentListKeyDown) {
+              onDocumentListKeyDown(event);
+            }
+          }}
+          aria-activedescendant={isGridView ? undefined : activeDescendantId}
+        >
+          {showDefaultEmptyState ? null : isGridView ? (
+            <div
+              className="documents-grid"
+              role="list"
+              onClick={handleGridBackgroundClick}
+              style={{ '--documents-grid-icon-size': `${gridIconSize}px` }}
+            >
+              {!showingSearchResults &&
+                subfolders.map((folder) => {
+                  const canDragFolder = folder.id !== 'root';
+                  const isDraggingFolder = draggedFolderId === folder.id;
+                  const isSelectedFolder = selectedFolderSet.has(folder.id);
+                  const classes = ['document-card', 'folder-card'];
+                  if (isDraggingFolder) classes.push('is-dragging');
+                  if (isSelectedFolder) classes.push('selected');
+                  return (
+                    <div
+                      key={folder.id}
+                      className={classes.join(' ')}
+                      role="listitem"
+                      id={`folder-card-${folder.id}`}
+                      draggable={canDragFolder}
+                      onClick={(event) => {
+                        onFolderRowClick?.(folder.id, event);
+                        const shouldNavigate =
+                          !event.defaultPrevented &&
+                          !event.metaKey &&
+                          !event.ctrlKey &&
+                          !event.shiftKey;
+                        if (shouldNavigate) {
+                          onFolderSelect(folder.id);
+                        }
+                      }}
+                      onDoubleClick={(event) => {
+                        event.preventDefault();
+                        onFolderSelect(folder.id);
+                      }}
+                      onDragOver={(event) => onFolderDragOver(event, folder.id)}
+                      onDragLeave={onFolderDragLeave}
+                      onDrop={(event) => onFolderDrop(event, folder.id)}
+                      onDragStart={(event) => {
+                        if (canDragFolder) {
+                          onFolderDragStart(event, folder.id);
+                        }
+                      }}
+                      onDragEnd={(event) => {
+                        if (canDragFolder) {
+                          onFolderDragEnd(event);
+                        }
+                      }}
+                    >
+                      <div className="folder-card__icon">
+                        <FolderIcon
+                          className="folder-card__icon-svg"
+                          size={gridIconSize}
+                        />
+                      </div>
+                      <div className="folder-card__meta">
+                        <div className="folder-card__name" title={folder.name}>
+                          {folder.name}
+                        </div>
+                      </div>
+                    </div>
+                  );
+                })}
+              {rows.map((doc) => {
+                const isSelected = selectedSet.has(doc.id);
+                const isDraggingDoc = draggingSet.has(doc.id);
+                const tagList = Array.isArray(doc.tags) ? doc.tags : [];
+                const visibleTags = tagList.slice(0, 3);
+                const remainingTagCount = tagList.length > 3 ? tagList.length - 3 : 0;
+                const cardClasses = ['document-card', 'document'];
+                if (isSelected) cardClasses.push('selected');
+                if (isDraggingDoc) cardClasses.push('is-dragging');
+                return (
+                  <div
+                    key={doc.id}
+                    className={cardClasses.join(' ')}
+                    role="listitem"
+                    id={`document-card-${doc.id}`}
+                    data-doc-id={doc.id}
+                    onClick={(event) => onDocumentRowClick(doc.id, event)}
+                    onDoubleClick={() => onDocumentOpen(doc.id)}
+                    draggable
+                    onDragStart={(event) => onDocumentDragStart(event, doc)}
+                    onDragEnd={onDocumentDragEnd}
+                    onDragOver={(event) => handleDocumentTagDragOver(event)}
+                    onDragOverCapture={(event) => handleDocumentTagDragOver(event)}
+                    onDragLeave={handleDocumentTagDragLeave}
+                    onDragLeaveCapture={handleDocumentTagDragLeave}
+                    onDrop={(event) => handleDocumentTagDrop(event, doc.id)}
+                    onDropCapture={(event) => handleDocumentTagDrop(event, doc.id)}
+                  >
+                    <DocumentThumbnailImage
+                      document={doc}
+                      ensureAssetUrl={ensureAssetUrl}
+                      getDocumentAsset={getDocumentAsset}
+                      alt={`Thumbnail for ${doc.title || doc.original_name}`}
+                      maxSize={gridIconSize}
+                    />
+                    <div className="document-card__meta">
+                      <div
+                        className="document-card__title"
+                        title={doc.title || doc.original_name}
+                      >
+                        {doc.title || doc.original_name}
+                      </div>
+                      {visibleTags.length > 0 && (
+                        <div className="document-card__tags">
+                          {visibleTags.map((tag) => {
+                            const colorSource = tag?.color || tagLookupById?.get(tag.id)?.color;
+                            const style = getTagColorStyle(colorSource);
+                            return (
+                              <span
+                                key={tag.id}
+                                className="badge tag-chip"
+                                style={style || undefined}
+                                title={tag.label}
+                                onClick={(event) => {
+                                  event.stopPropagation();
+                                  if (onTagClick) {
+                                    onTagClick(tag.id);
+                                  }
+                                }}
+                                role="button"
+                                draggable
+                                onDragStart={(event) => {
+                                  event.stopPropagation();
+                                  try {
+                                    if (event.dataTransfer) {
+                                      event.dataTransfer.effectAllowed = 'copyMove';
+                                    }
+                                    const payload = JSON.stringify({
+                                      id: tag.id,
+                                      label: tag.label,
+                                      sourceDocId: doc.id,
+                                    });
+                                    event.dataTransfer?.setData('application/x-papercrate-tag', payload);
+                                    event.dataTransfer?.setData('text/papercrate-tag', payload);
+                                    event.dataTransfer?.setData('text/plain', tag.label || 'Tag');
+                                  } catch (
+                                    // eslint-disable-next-line no-empty
+                                    error
+                                  ) {}
+                                }}
+                                onDragEnd={(event) => {
+                                  event.stopPropagation();
+                                }}
+                                onKeyDown={(event) => {
+                                  if (event.key === 'Enter' || event.key === ' ') {
+                                    event.preventDefault();
+                                    event.stopPropagation();
+                                    if (onTagClick) {
+                                      onTagClick(tag.id);
+                                    }
+                                  }
+                                }}
+                              >
+                                {tag.label}
+                              </span>
+                            );
+                          })}
+                          {remainingTagCount > 0 && (
+                            <span className="badge tag-chip tag-chip--more">+{remainingTagCount}</span>
+                          )}
+                        </div>
+                      )}
+                    </div>
+                  </div>
+                );
+              })}
+            </div>
+          ) : (
+            <table aria-multiselectable="true">
+              <thead>
+                <tr>
+                  <th className="thumb-column">Preview</th>
+                  <th>Name</th>
+                  <th>Type</th>
+                  <th>Updated</th>
+                  <th className="actions-column">Actions</th>
+                </tr>
+              </thead>
+              <tbody>
+                {!showingSearchResults &&
+                  subfolders.map((folder) => {
+                    const canDragFolder = folder.id !== 'root';
+                    const isDraggingFolder = draggedFolderId === folder.id;
+                    const isSelectedFolder = selectedFolderSet.has(folder.id);
+                    return (
+                      <tr
+                        key={folder.id}
+                        className={`folder${isDraggingFolder ? ' is-dragging' : ''}${
+                          focusedRowKey === `folder:${folder.id}` ? ' focused' : ''
+                        }${isSelectedFolder ? ' selected' : ''}`}
+                        id={`folder-row-${folder.id}`}
+                        onClick={(event) => {
+                          onFolderRowClick?.(folder.id, event);
+                          const shouldNavigate =
+                            !event.defaultPrevented &&
+                            !event.metaKey &&
+                            !event.ctrlKey &&
+                            !event.shiftKey;
+                          if (shouldNavigate) {
+                            onFolderSelect(folder.id);
+                          }
+                          if (scrollRef.current) {
+                            scrollRef.current.focus({ preventScroll: true });
+                          }
+                          onFocusedRowChange?.(`folder:${folder.id}`);
+                        }}
+                        onDoubleClick={(event) => {
+                          event.preventDefault();
+                          onFolderSelect(folder.id);
+                        }}
+                        onDragOver={(event) => onFolderDragOver(event, folder.id)}
+                        onDragLeave={onFolderDragLeave}
+                        onDrop={(event) => onFolderDrop(event, folder.id)}
+                        draggable={canDragFolder}
+                        onDragStart={(event) => {
+                          if (canDragFolder) {
+                            onFolderDragStart(event, folder.id);
+                          }
+                        }}
+                        onDragEnd={(event) => {
+                          if (canDragFolder) {
+                            onFolderDragEnd(event);
+                          }
+                        }}
+                      >
+                        <td className="thumb-cell">
+                          <div className="thumb-icon">
+                            <FolderIcon
+                              className="thumb-icon__image"
+                              size={32}
+                            />
+                          </div>
+                        </td>
+                        <td className="doc-list__name">
+                          <div className="doc-list__name-content">
+                            <span>{folder.name}</span>
+                            {folder.id !== 'root' && (
+                              <button
+                                type="button"
+                                className="icon-button ghost doc-list__icon-button"
+                                onClick={(event) => {
+                                  event.stopPropagation();
+                                  if (!onFolderRename) return;
+                                  const nextName = window.prompt('Rename folder', folder.name || '');
+                                  if (!nextName) {
+                                    return;
+                                  }
+                                  const trimmed = nextName.trim();
+                                  if (!trimmed || trimmed === folder.name) {
+                                    return;
+                                  }
+                                  onFolderRename(folder.id, trimmed);
+                                }}
+                                title="Rename folder"
+                                aria-label={`Rename folder ${folder.name}`}
+                              >
+                                <EditIcon className="doc-list__icon" size={16} />
+                              </button>
+                            )}
+                          </div>
+                        </td>
+                        <td>Folder</td>
+                        <td>—</td>
+                        <td className="actions">
+                          <button
+                            type="button"
+                            className="icon-button danger"
+                            onClick={(event) => {
+                              event.stopPropagation();
+                              onFolderDelete(folder.id);
+                            }}
+                          >
+                            Delete
+                          </button>
+                        </td>
+                      </tr>
+                    );
+                  })}
+                {rows.map((doc) => {
+                  const isSelected = selectedSet.has(doc.id);
+                  const isDraggingDoc = draggingSet.has(doc.id);
+                  const rowClasses = ['document'];
+                  if (isSelected) rowClasses.push('selected');
+                  if (isDraggingDoc) rowClasses.push('is-dragging');
+                  const downloadHref = getDownloadHref?.(doc) || null;
+
+                  return (
+                    <tr
+                      key={doc.id}
+                      className={rowClasses.join(' ')}
+                      id={`document-row-${doc.id}`}
+                      data-doc-id={doc.id}
+                      onClick={(event) => onDocumentRowClick(doc.id, event)}
+                      onDoubleClick={() => onDocumentOpen(doc.id)}
+                      draggable
+                      onDragStart={(event) => onDocumentDragStart(event, doc)}
+                      onDragEnd={onDocumentDragEnd}
+                      onDragOver={handleDocumentTagDragOver}
+                      onDragLeave={handleDocumentTagDragLeave}
+                      onDrop={(event) => handleDocumentTagDrop(event, doc.id)}
+                    >
+                      <td className="thumb-cell">
+                        <DocumentThumbnailImage
+                          document={doc}
+                          ensureAssetUrl={ensureAssetUrl}
+                          getDocumentAsset={getDocumentAsset}
+                          alt={`Thumbnail for ${doc.title || doc.original_name}`}
+                        />
+                      </td>
+                      <td className="doc-list__name">
+                        <div className="doc-name">
+                          <div className="doc-list__name-content">
+                            <span className="doc-name__title">{doc.title || doc.original_name}</span>
+                            <button
+                              type="button"
+                              className="icon-button ghost doc-list__icon-button"
+                              onClick={(event) => {
+                                event.stopPropagation();
+                                if (!onDocumentRename) return;
+                                const nextName = window.prompt(
+                                  'Rename document',
+                                  doc.title || doc.original_name || '',
+                                );
+                                if (!nextName) {
+                                  return;
+                                }
+                                const trimmed = nextName.trim();
+                                if (!trimmed || trimmed === (doc.title || doc.original_name)) {
+                                  return;
+                                }
+                                onDocumentRename(doc.id, trimmed);
+                              }}
+                              title="Rename document"
+                              aria-label={`Rename document ${doc.title || doc.original_name}`}
+                            >
+                              <EditIcon className="doc-list__icon" size={16} />
+                            </button>
+                          </div>
+                          {(doc.tags || []).length > 0 && (
+                            <div className="doc-name__tags">
+                              {(doc.tags || []).map((tag) => {
+                                const colorSource = tag?.color || tagLookupById?.get(tag.id)?.color;
+                                const style = getTagColorStyle(colorSource);
+                                return (
+                                  <span
+                                    key={tag.id}
+                                    className="badge tag-chip"
+                                    style={style || undefined}
+                                    title={tag.label}
+                                    onClick={(event) => {
+                                      event.stopPropagation();
+                                      if (onTagClick) {
+                                        onTagClick(tag.id);
+                                      }
+                                    }}
+                                    role="button"
+                                    draggable
+                                    onDragStart={(event) => {
+                                      event.stopPropagation();
+                                      try {
+                                        if (event.dataTransfer) {
+                                          event.dataTransfer.effectAllowed = 'copyMove';
+                                        }
+                                        const payload = JSON.stringify({
+                                          id: tag.id,
+                                          label: tag.label,
+                                          sourceDocId: doc.id,
+                                        });
+                                        event.dataTransfer?.setData('application/x-papercrate-tag', payload);
+                                        event.dataTransfer?.setData('text/papercrate-tag', payload);
+                                        event.dataTransfer?.setData('text/plain', tag.label || 'Tag');
+                                      } catch (
+                                        // eslint-disable-next-line no-empty
+                                        error
+                                      ) {}
+                                    }}
+                                    onDragEnd={(event) => {
+                                      event.stopPropagation();
+                                    }}
+                                    onKeyDown={(event) => {
+                                      if (event.key === 'Enter' || event.key === ' ') {
+                                        event.preventDefault();
+                                        event.stopPropagation();
+                                        if (onTagClick) {
+                                          onTagClick(tag.id);
+                                        }
+                                      }
+                                    }}
+                                  >
+                                    {tag.label}
+                                  </span>
+                                );
+                              })}
+                            </div>
+                          )}
+                        </div>
+                      </td>
+                      <td>{doc.content_type || 'Document'}</td>
+                      <td>
+                        {doc.updated_at
+                          ? new Date(doc.updated_at).toLocaleString()
+                          : '—'}
+                      </td>
+                      <td className="actions">
+                        <div className="action-buttons">
+                          {downloadHref ? (
+                            <a
+                              className="button-link with-icon"
+                              href={downloadHref}
+                              target="_blank"
+                              rel="noopener noreferrer"
+                              onClick={(event) => event.stopPropagation()}
+                              onAuxClick={(event) => event.stopPropagation()}
+                              onContextMenu={(event) => event.stopPropagation()}
+                            >
+                              <DownloadIcon className="icon-inline" />
+                              <span>Download</span>
+                            </a>
+                          ) : (
+                            <span className="meta">No download</span>
+                          )}
+                          <button
+                            type="button"
+                            className="danger"
+                            onClick={(event) => {
+                              event.stopPropagation();
+                              onDocumentDelete?.(doc.id);
+                            }}
+                          >
+                            Delete
+                          </button>
+                        </div>
+                      </td>
+                    </tr>
+                  );
+                })}
+              </tbody>
+            </table>
+          )}
+        </div>
+        {showListSearchEmptyState && (
+          <div className="empty-state">No documents match the current filters.</div>
+        )}
+        {showSearchHint && (
+          <div className="search-hint">
+            Showing {rows.length} document{rows.length === 1 ? '' : 's'} in {currentFolderName} and subfolders.
+          </div>
+        )}
+      </div>
+    </section>
+  );
+};
+
+export default DocumentsTable;
+export { DocumentThumbnailImage };

frontend/src/hooks/useApiError.js

@@ -0,0 +1,33 @@
+import { useCallback } from 'react';
+
+const noop = () => {};
+
+const normalizeMessage = (error) => {
+  if (!error) return 'Something went wrong.';
+  if (typeof error === 'string') {
+    return error;
+  }
+  const { response, message } = error;
+  if (response?.data?.error) return response.data.error;
+  if (response?.data?.message) return response.data.message;
+  return message || 'Something went wrong.';
+};
+
+const useApiError = ({
+  logger = console,
+  onReport = noop,
+} = {}) => {
+  return useCallback(
+    (error, { message, variant = 'error', retry = null } = {}) => {
+      const normalizedMessage = message || normalizeMessage(error);
+      if (logger && typeof logger.error === 'function') {
+        logger.error('[API]', normalizedMessage, error);
+      }
+      onReport({ message: normalizedMessage, variant, retry, error });
+      return normalizedMessage;
+    },
+    [logger, onReport],
+  );
+};
+
+export default useApiError;

frontend/src/hooks/useAssetNavigator.js

@@ -0,0 +1,133 @@
+import { useCallback, useEffect, useMemo, useState } from 'react';
+import { createAssetView } from '../asset_manager';
+
+const clampOrdinalValue = (value, cardinality, defaultOrdinal) => {
+  const raw = Number.isFinite(value) ? value : defaultOrdinal;
+  let next = Math.max(1, Math.floor(raw));
+  if (cardinality && cardinality > 0) {
+    next = Math.min(next, cardinality);
+  }
+  return next;
+};
+
+export const useAssetNavigator = ({
+  document,
+  assetType,
+  ensureAssetUrl,
+  getAsset,
+  prefetch = 2,
+  defaultOrdinal = 1,
+}) => {
+  const documentId = document?.id || null;
+
+  const asset = useMemo(() => {
+    if (!document || typeof getAsset !== 'function') {
+      return null;
+    }
+    return getAsset(document, assetType);
+  }, [document, assetType, getAsset]);
+
+  const view = useMemo(() => createAssetView(asset), [asset]);
+  const cardinality = view.getCardinality();
+
+  const [ordinal, setOrdinalInternal] = useState(defaultOrdinal);
+
+  useEffect(() => {
+    setOrdinalInternal(defaultOrdinal);
+  }, [documentId, assetType, defaultOrdinal]);
+
+  const setOrdinal = useCallback(
+    (next) => {
+      setOrdinalInternal((prev) => {
+        const target = typeof next === 'function' ? next(prev) : next;
+        return clampOrdinalValue(target, cardinality, defaultOrdinal);
+      });
+    },
+    [cardinality, defaultOrdinal],
+  );
+
+  const goPrev = useCallback(() => setOrdinal((value) => value - 1), [setOrdinal]);
+  const goNext = useCallback(() => setOrdinal((value) => value + 1), [setOrdinal]);
+
+  const objects = view.getObjects();
+  const currentObject = view.getObject(ordinal);
+  const currentUrl = currentObject?.url || view.getPrimaryUrl();
+  const currentMetadata = currentObject?.metadata || view.getPrimaryMetadata() || null;
+
+  const canGoPrev = ordinal > 1;
+  const canGoNext = cardinality ? ordinal < cardinality : true;
+
+  const ordinalsNeedingLoad = useMemo(() => {
+    const missing = [];
+    if (!asset) {
+      return missing;
+    }
+    const maxOrdinal = cardinality && cardinality > 0
+      ? Math.min(cardinality, ordinal + Math.max(1, prefetch) - 1)
+      : ordinal + Math.max(1, prefetch) - 1;
+
+    for (let ord = ordinal; ord <= maxOrdinal; ord += 1) {
+      const object = view.getObject(ord);
+      if (!object?.url) {
+        missing.push(ord);
+      }
+    }
+
+    return missing;
+  }, [asset, view, ordinal, prefetch, cardinality]);
+
+  const fetchStart = ordinalsNeedingLoad.length ? ordinalsNeedingLoad[0] : null;
+  const fetchEnd = ordinalsNeedingLoad.length ? ordinalsNeedingLoad[ordinalsNeedingLoad.length - 1] : null;
+  const fetchLimit = fetchStart && fetchEnd ? fetchEnd - fetchStart + 1 : null;
+
+  const [loading, setLoading] = useState(false);
+
+  useEffect(() => {
+    if (!documentId || !asset || !ensureAssetUrl) {
+      setLoading(false);
+      return;
+    }
+    if (!fetchStart || !fetchLimit) {
+      setLoading(false);
+      return;
+    }
+
+    let cancelled = false;
+    setLoading(true);
+    ensureAssetUrl(documentId, asset, {
+      start: fetchStart,
+      limit: fetchLimit,
+    })
+      .catch(() => {})
+      .finally(() => {
+        if (!cancelled) {
+          setLoading(false);
+        }
+      });
+
+    return () => {
+      cancelled = true;
+    };
+  }, [documentId, asset, ensureAssetUrl, fetchStart, fetchLimit]);
+
+  return {
+    document,
+    documentId,
+    asset,
+    assetType,
+    ordinal,
+    setOrdinal,
+    goPrev,
+    goNext,
+    canGoPrev,
+    canGoNext,
+    cardinality,
+    currentObject,
+    currentUrl,
+    currentMetadata,
+    objects,
+    isLoading: loading,
+  };
+};
+
+export default useAssetNavigator;

frontend/src/index.html

@@ -3,9 +3,10 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Paperless-NEO</title>
+    <title>Papercrate</title>
   </head>
   <body>
+    <script src="/config.js"></script>
     <main id="app"></main>
   </body>
 </html>

frontend/src/preview/PreviewWorkspace.jsx

@@ -0,0 +1,92 @@
+import React from 'react';
+import { DownloadIcon } from '../ui/icons';
+import { formatFileSize } from '../utils/format';
+
+const PreviewWorkspace = ({
+  document,
+  previewEntry,
+  resolveApiPath,
+  onClose,
+  onRegenerateThumbnails,
+}) => {
+  if (!document) {
+    return null;
+  }
+
+  const title = document.title || document.original_name || 'Document';
+  const mime = previewEntry?.contentType || document.content_type || 'application/pdf';
+  const downloadHref = document.current_version?.download_path
+    ? resolveApiPath(document.current_version.download_path)
+    : null;
+  const sizeBytes = Number(document.current_version?.size_bytes) || 0;
+  const sizeLabel = sizeBytes > 0 ? formatFileSize(sizeBytes) : null;
+  const metadata =
+    document.metadata && Object.keys(document.metadata).length > 0 ? document.metadata : null;
+
+  return (
+    <section className="preview-workspace">
+      <header className="preview-workspace__header">
+        <div className="preview-workspace__meta">
+          <button
+            type="button"
+            className="secondary"
+            onClick={() => onClose(document.folder_id ?? 'root')}
+          >
+            ← Back
+          </button>
+          <div>
+            <h2>{title}</h2>
+            <span className="meta">
+              {document.content_type || mime}
+              {sizeLabel ? ` · ${sizeLabel}` : ''}
+            </span>
+          </div>
+        </div>
+        <div className="preview-workspace__actions">
+          <a
+            className="button-link with-icon"
+            href={downloadHref || '#'}
+            target="_blank"
+            rel="noopener noreferrer"
+            aria-disabled={!downloadHref}
+            onClick={(event) => {
+              if (!downloadHref) {
+                event.preventDefault();
+              }
+            }}
+          >
+            <DownloadIcon className="icon-inline" />
+            <span>Download</span>
+          </a>
+          <button
+            type="button"
+            className="secondary"
+            onClick={() => onRegenerateThumbnails(document.id)}
+          >
+            Re-run analysis
+          </button>
+        </div>
+      </header>
+      <div className="preview-workspace__body">
+        {!previewEntry?.url ? (
+          <div className="preview-workspace__message">Loading preview…</div>
+        ) : (
+          <iframe
+            src={previewEntry.url}
+            title={`Preview of ${title}`}
+            className="preview-workspace__object"
+          />
+        )}
+      </div>
+      {metadata && (
+        <section className="preview-workspace__metadata">
+          <h3>Metadata</h3>
+          <pre>{JSON.stringify(metadata, null, 2)}</pre>
+        </section>
+      )}
+    </section>
+  );
+};
+
+export default PreviewWorkspace;
+

frontend/src/routes/DocumentViewerRoute.jsx

@@ -0,0 +1,72 @@
+import React, { useEffect } from 'react';
+import { useNavigate, useParams } from 'react-router-dom';
+
+import { useAppShell } from '../appShellContext';
+import PreviewWorkspace from '../preview/PreviewWorkspace';
+
+const DocumentViewerRoute = () => {
+  const {
+    previewWorkspaceDocument,
+    previewWorkspaceEntry,
+    closeDocumentPreview,
+    handleThumbnailRegeneration,
+    ensurePreviewData,
+    notifyApiError,
+    resolveApiPath,
+  } = useAppShell();
+  const { documentId } = useParams();
+  const navigate = useNavigate();
+
+  useEffect(() => {
+    if (!documentId) {
+      navigate('/documents', { replace: true });
+      return;
+    }
+
+    let cancelled = false;
+
+    const hydrate = async () => {
+      try {
+        await ensurePreviewData(documentId);
+      } catch (error) {
+        if (cancelled) {
+          return;
+        }
+        notifyApiError(error, 'Failed to open document preview.');
+        navigate('/documents', { replace: true });
+      }
+    };
+
+    hydrate();
+
+    return () => {
+      cancelled = true;
+    };
+  }, [documentId, ensurePreviewData, notifyApiError, navigate]);
+
+  const isReady =
+    documentId && previewWorkspaceDocument && previewWorkspaceDocument.id === documentId;
+
+  if (!isReady) {
+    return (
+      <main className="preview-main">
+        <div className="preview-workspace__message">Loading preview…</div>
+      </main>
+    );
+  }
+
+  return (
+    <main className="preview-main">
+      <PreviewWorkspace
+        document={previewWorkspaceDocument}
+        previewEntry={previewWorkspaceEntry}
+        resolveApiPath={resolveApiPath}
+        onClose={closeDocumentPreview}
+        onRegenerateThumbnails={handleThumbnailRegeneration}
+      />
+    </main>
+  );
+};
+
+export default DocumentViewerRoute;
+

frontend/src/sidebar/Sidebar.jsx

@@ -0,0 +1,301 @@
+import React, { useCallback, useMemo } from 'react';
+import { ChevronIcon, TrashIcon, EditIcon, FolderIcon } from '../ui/icons';
+
+import { getTagColorStyle } from '../utils/colors';
+
+const FolderNode = ({
+  node,
+  depth,
+  isSelected,
+  onToggle,
+  onSelect,
+  onDrop,
+  onDragOver,
+  onDragLeave,
+  onDelete,
+  onRename,
+  renderChildren,
+  onFolderDragStart,
+  onFolderDragEnd,
+  draggingFolderId,
+}) => {
+  const isRoot = node.id === 'root';
+  const hasChildren = node.children.length > 0;
+  const canToggle = !isRoot && (hasChildren || !node.loaded);
+  const showChevron = !isRoot && hasChildren;
+  const icon = showChevron ? <ChevronIcon className="toggle-icon" /> : null;
+  const canDrag = !isRoot;
+  const isDragging = draggingFolderId === node.id;
+  const isExpanded = isRoot ? true : Boolean(node.expanded);
+  const rowClasses = ['folder-row'];
+  if (isSelected) {
+    rowClasses.push('active');
+  }
+
+  const handleToggleClick = (event) => {
+    event.stopPropagation();
+    if (canToggle) {
+      onToggle(node.id);
+    }
+  };
+
+  return (
+    <li className={`folder-node${isDragging ? ' is-dragging' : ''}`}>
+      <div
+        className={rowClasses.join(' ')}
+        draggable={canDrag}
+        onClick={() => onSelect(node.id)}
+        onDragOver={(event) => onDragOver(event, node.id)}
+        onDragLeave={onDragLeave}
+        onDrop={(event) => onDrop(event, node.id)}
+        onDragStart={(event) => {
+          if (!canDrag || !onFolderDragStart) return;
+          onFolderDragStart(event, node.id);
+        }}
+        onDragEnd={(event) => {
+          if (onFolderDragEnd) {
+            onFolderDragEnd(event);
+          }
+        }}
+      >
+        {!isRoot && (
+          <span
+            className={`toggle${showChevron ? '' : ' invisible'}${isExpanded ? ' expanded' : ''}`}
+            onClick={handleToggleClick}
+          >
+            {icon}
+          </span>
+        )}
+        <span className="name">
+          <FolderIcon className="folder-icon-image" size={16} />
+          {node.name}
+        </span>
+        {node.id !== 'root' && (
+          <div className="folder-row__actions">
+            <button
+              type="button"
+              className="icon-button ghost"
+              onClick={(event) => {
+                event.stopPropagation();
+                if (!onRename) return;
+                const nextName = window.prompt('Rename folder', node.name || '');
+                if (!nextName) {
+                  return;
+                }
+                const trimmed = nextName.trim();
+                if (!trimmed || trimmed === node.name) {
+                  return;
+                }
+                onRename(node.id, trimmed);
+              }}
+              title="Rename folder"
+              aria-label={`Rename folder ${node.name}`}
+            >
+              <EditIcon className="icon-edit" size={18} />
+            </button>
+            <button
+              type="button"
+              className="icon-button ghost"
+              onClick={(event) => {
+                event.stopPropagation();
+                onDelete(node.id);
+              }}
+              title="Delete folder"
+              aria-label={`Delete folder ${node.name}`}
+            >
+              <TrashIcon className="icon-trash" size={18} />
+            </button>
+          </div>
+        )}
+      </div>
+      {isExpanded && node.children.length > 0 && (
+        <ul className={`folder-children${depth === 0 ? ' folder-children--level1' : ''}`}>
+          {renderChildren(node.children, depth + 1)}
+        </ul>
+      )}
+    </li>
+  );
+};
+
+const Sidebar = ({
+  folderNodes,
+  onToggle,
+  onSelect,
+  onDrop,
+  onDragOver,
+  onDragLeave,
+  onDeleteFolder,
+  onRenameFolder,
+  selectedFolder,
+  onFolderDragStart,
+  onFolderDragEnd,
+  draggedFolderId,
+  tags = [],
+  activeTagIds = [],
+  onToggleTagFilter,
+  correspondents = [],
+  activeCorrespondentIds = [],
+  onToggleCorrespondentFilter,
+}) => {
+  const sortedCorrespondents = useMemo(
+    () =>
+      [...correspondents].sort((a, b) =>
+        (a?.name || '').localeCompare(b?.name || '', undefined, { sensitivity: 'base' }),
+      ),
+    [correspondents],
+  );
+  const activeCorrespondentSet = useMemo(
+    () => new Set(activeCorrespondentIds || []),
+    [activeCorrespondentIds],
+  );
+  const handleToggleTag = onToggleTagFilter || (() => {});
+  const activeTagSet = new Set(activeTagIds);
+
+  const renderNodes = useCallback(
+    (ids, depth) =>
+      ids.map((id) => {
+        const node = folderNodes.get(id);
+        if (!node) return null;
+        return (
+          <FolderNode
+            key={id}
+            node={node}
+            depth={depth}
+            isSelected={selectedFolder === id}
+            onToggle={() => onToggle(id)}
+            onSelect={onSelect}
+            onDrop={onDrop}
+            onDragOver={onDragOver}
+            onDragLeave={onDragLeave}
+            onDelete={onDeleteFolder}
+            onRename={onRenameFolder}
+            renderChildren={renderNodes}
+            onFolderDragStart={onFolderDragStart}
+            onFolderDragEnd={onFolderDragEnd}
+            draggingFolderId={draggedFolderId}
+          />
+        );
+      }),
+    [
+      folderNodes,
+      selectedFolder,
+      onToggle,
+      onSelect,
+      onDrop,
+      onDragOver,
+      onDragLeave,
+      onDeleteFolder,
+      onRenameFolder,
+      onFolderDragStart,
+      onFolderDragEnd,
+      draggedFolderId,
+    ],
+  );
+
+  const rootNode = folderNodes.get('root');
+
+  return (
+    <aside className="sidebar column">
+      <div className="sidebar-section sidebar-section--folders">
+        <div className="sidebar-section__header">
+          <h3>Folders</h3>
+        </div>
+        <ul className="folder-tree">
+          {rootNode && renderNodes([rootNode.id], 0)}
+        </ul>
+      </div>
+      <div className="sidebar-section">
+        <div className="sidebar-section__header">
+          <h3>Tags</h3>
+          <span className="meta">{tags.length}</span>
+        </div>
+        <div
+          className={`sidebar-tag-cloud${
+            activeTagSet.size ? ' sidebar-tag-cloud--has-active' : ''
+          }`}
+          role="list"
+        >
+          {tags.length ? (
+            tags.map((tag) => {
+              const isActive = activeTagSet.has(tag.id);
+              const style = getTagColorStyle(tag.color);
+              const className = `sidebar-tag-pill${isActive ? ' active' : ''}`;
+              return (
+                <button
+                  key={tag.id}
+                  type="button"
+                  role="listitem"
+                  className={className}
+                  style={style || undefined}
+                  onClick={() => handleToggleTag(tag.id)}
+                  aria-pressed={isActive}
+                  draggable
+                  onDragStart={(event) => {
+                    try {
+                      const payload = JSON.stringify({
+                        id: tag.id,
+                        label: tag.label,
+                        color: tag.color || null,
+                      });
+                      event.dataTransfer.effectAllowed = 'copy';
+                      event.dataTransfer.setData('application/x-papercrate-tag', payload);
+                      event.dataTransfer.setData('text/papercrate-tag', payload);
+                    } catch (
+                      // eslint-disable-next-line no-empty
+                      error
+                    ) {}
+                  }}
+                >
+                  {tag.label}
+                </button>
+              );
+            })
+          ) : (
+            <span className="meta">No tags yet</span>
+          )}
+        </div>
+      </div>
+      <div className="sidebar-section">
+        <div className="sidebar-section__header">
+          <h3>Correspondents</h3>
+          <span className="meta">{correspondents.length}</span>
+        </div>
+        <ul className="sidebar-correspondent-list">
+          {sortedCorrespondents.length ? (
+            sortedCorrespondents.map((correspondent) => {
+              const isActive = activeCorrespondentSet.has(correspondent.id);
+              const className = `sidebar-correspondent-item${isActive ? ' active' : ''}`;
+              const label = correspondent.name || 'Unnamed';
+              const handleSelect = () => {
+                const nextId = isActive ? null : correspondent.id;
+                onToggleCorrespondentFilter?.(nextId);
+              };
+              return (
+                <li key={correspondent.id}>
+                  <span
+                    className={className}
+                    role="button"
+                    onClick={handleSelect}
+                    onKeyDown={(event) => {
+                      if (event.key === 'Enter' || event.key === ' ') {
+                        event.preventDefault();
+                        handleSelect();
+                      }
+                    }}
+                  >
+                    {label}
+                  </span>
+                </li>
+              );
+            })
+          ) : (
+            <li className="meta">No correspondents yet</li>
+          )}
+        </ul>
+      </div>
+    </aside>
+  );
+};
+
+export default Sidebar;
+export { FolderNode };

frontend/src/skeuomorphic_ws.css

@@ -0,0 +1,310 @@
+/* Skeuomorphic workspace styles */
+.skeuo-main {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+}
+
+.skeuo-shell {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  grid-column: 2 / -1;
+  min-height: 0;
+  position: relative;
+  background-color: var(--surface-subtle);
+}
+
+.skeuo-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 1rem;
+  padding: 0.75rem 1rem 0.5rem;
+  background-color: var(--surface-subtle);
+}
+
+.skeuo-header__meta {
+  display: flex;
+  flex-direction: column;
+  gap: 0.35rem;
+}
+
+.skeuo-header__meta h2 {
+  margin: 0;
+  font-size: 1.25rem;
+  font-weight: 600;
+}
+
+.skeuo-breadcrumbs {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.35rem;
+  font-size: 0.85rem;
+  color: var(--muted);
+}
+
+.skeuo-crumb {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.35rem;
+}
+
+.skeuo-crumb.is-current {
+  color: var(--fg);
+  font-weight: 600;
+}
+
+.skeuo-crumb-separator {
+  opacity: 0.4;
+}
+
+.skeuo-header__actions {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+}
+
+.skeuo-canvas {
+  flex: 1;
+  position: relative;
+  overflow: hidden;
+  margin: 0;
+}
+
+.skeuo-empty {
+  height: 100%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 3rem;
+  text-align: center;
+  color: var(--muted);
+  font-size: 0.95rem;
+}
+
+.skeuo-item {
+  position: absolute;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  width: auto;
+  cursor: grab;
+  touch-action: none;
+  transform-origin: center center;
+  transition: transform 0.28s ease, box-shadow 0.16s ease;
+  outline: none;
+  will-change: transform;
+}
+
+.skeuo-item__body {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  transition: width 0.28s ease, height 0.28s ease;
+}
+
+.skeuo-item:focus-visible {
+  outline: 2px solid var(--accent);
+  outline-offset: 4px;
+}
+
+.skeuo-item.is-dragging {
+  cursor: grabbing;
+  transition: none;
+}
+
+.skeuo-item.is-zoomed {
+  cursor: pointer;
+}
+
+.skeuo-item.is-tag-target .skeuo-item__card {
+  outline: 1em dashed var(--accent);
+  outline-offset: 1.41em;
+}
+
+.skeuo-item.is-tag-pending .skeuo-item__card {
+  opacity: 0.6;
+}
+
+.skeuo-item.is-filtered-out {
+  opacity: 0.12;
+  pointer-events: none;
+  filter: blur(15px) grayscale(100%);
+  transition: opacity 0.6s ease, filter 0.28s ease;
+  z-index: 0 !important;
+}
+
+.skeuo-item__tags {
+  --tag-scale: 1;
+  position: absolute;
+  top: 0;
+  right: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 0.35rem;
+  align-items: flex-end;
+  transform-origin: top right;
+  transform: scale(var(--tag-scale)) translate(-0.5em, 0.5em);
+  transition: transform 0.28s ease;
+}
+
+.skeuo-tag {
+  display: inline-flex;
+  align-items: center;
+  justify-content: flex-start;
+  padding: 0.28rem 0.7rem;
+  border-radius: 1rem;
+  background: linear-gradient(180deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0) 70%), var(--surface);
+  color: var(--fg);
+  font-size: 1rem;
+  font-weight: 600;
+  box-shadow: 2px 2px 3px rgba(0, 0, 0, 0.18);
+  text-align: left;
+  white-space: nowrap;
+  user-select: none;
+}
+
+.skeuo-item__tags .skeuo-tag {
+  font-size: 0.75rem;
+  padding: 0.18rem 0.55rem;
+  pointer-events: auto;
+  cursor: grab;
+  transition: transform 0.16s ease, opacity 0.2s ease;
+}
+
+.skeuo-tag.is-drag-hidden {
+  opacity: 0.4;
+  pointer-events: none;
+}
+
+.skeuo-tag span {
+  display: block;
+  pointer-events: none;
+  user-select: none;
+}
+
+
+.skeuo-card__nav {
+  position: absolute;
+  bottom: calc(3em * 0.707 * var(--nav-scale));
+  left: 50%;
+  transform: translateX(-50%) scale(calc(0.707 * var(--nav-scale, 1)));
+  transform-origin: center;
+  display: flex;
+  gap: 2rem;
+  opacity: 0;
+  pointer-events: none;
+  transition: opacity 0.2s ease;
+}
+
+.skeuo-item__card:hover .skeuo-card__nav {
+  opacity: 1;
+  pointer-events: auto;
+}
+
+.skeuo-card__nav-button {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 3.3em;
+  height: 3.3em;
+  padding: 0.36em;
+  border-radius: 3.3em;
+  border: none;
+  background: rgba(0, 0, 0, 0.55);
+  color: #fff;
+  cursor: pointer;
+  transition: background 0.15s ease, opacity 0.15s ease;
+}
+
+.skeuo-card__nav-button:hover:not([disabled]) {
+  background: rgba(0, 0, 0, 0.75);
+}
+
+.skeuo-card__nav-button:disabled {
+  opacity: 0.4;
+  cursor: default;
+}
+
+.skeuo-card__nav-button:focus-visible {
+  outline: 2px solid var(--accent, #2684ff);
+  outline-offset: 2px;
+}
+
+.skeuo-card__nav-button svg {
+  width: 100%;
+  height: 100%;
+}
+
+.skeuo-item__tags .skeuo-tag.is-tear-pending {
+  opacity: 0.4;
+}
+
+body.skeuo-cursor-remove,
+body.skeuo-cursor-remove * {
+  cursor: not-allowed !important;
+}
+
+.skeuo-item__shadow {
+  display: none;
+}
+
+.skeuo-item__card {
+  position: relative;
+  border-radius: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  box-shadow: 0 24px 72px rgba(0, 0, 0, 0.24);
+  overflow: hidden;
+  --nav-scale: 1;
+}
+
+.skeuo-item__card--empty {
+  background:
+    radial-gradient(circle at 28% 24%, rgba(255, 255, 255, 0.32), transparent 60%),
+    radial-gradient(circle at 72% 78%, rgba(0, 0, 0, 0.08), transparent 65%),
+    linear-gradient(135deg, #e6e1d6 0%, #d2cdc2 100%);
+  width: 100%;
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 0.5rem;
+}
+
+.skeuo-item__placeholder {
+  font-size: 0.95rem;
+  font-weight: 500;
+  letter-spacing: normal;
+  color: var(--muted);
+}
+
+.skeuo-item__empty {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  width: 100%;
+  height: 100%;
+  gap: 0.5rem;
+  padding: 1rem;
+  text-align: center;
+}
+
+.skeuo-item__title {
+  font-size: 0.95rem;
+  font-weight: 500;
+  color: #3b3b3b;
+  max-width: 90%;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}