From 665114036b3deb79ba232f4e741eeb9ad4e32dec Mon Sep 17 00:00:00 2001
From: Nils Schneider <nils.schneider@posteo.de>
Date: Mon, 22 Dec 2025 21:12:29 +0100
Subject: [PATCH] refactor: remove lattice-store crate and update roadmap tasks

---
 Cargo.toml                     |  2 --
 docs/roadmap.md                |  3 +--
 lattice-store/Cargo.toml       | 15 ---------------
 lattice-store/src/lib.rs       | 12 ------------
 lattice-store/src/snapshot.rs  |  6 ------
 lattice-store/src/store.rs     | 35 ----------------------------------
 lattice-store/src/watermark.rs |  9 ---------
 7 files changed, 1 insertion(+), 81 deletions(-)
 delete mode 100644 lattice-store/Cargo.toml
 delete mode 100644 lattice-store/src/lib.rs
 delete mode 100644 lattice-store/src/snapshot.rs
 delete mode 100644 lattice-store/src/store.rs
 delete mode 100644 lattice-store/src/watermark.rs

diff --git a/Cargo.toml b/Cargo.toml
index 2a298b4..254a280 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,6 @@ resolver = "2"
 members = [
     "lattice-core",
     "lattice-net",
-    "lattice-store",
     "lattice-cli",
 ]
 
@@ -16,7 +15,6 @@ license = "MIT"
 # Workspace crates
 lattice-core = { path = "lattice-core" }
 lattice-net = { path = "lattice-net" }
-lattice-store = { path = "lattice-store" }
 lattice-cli = { path = "lattice-cli" }
 
 # CLI
diff --git a/docs/roadmap.md b/docs/roadmap.md
index f50b4c3..9255f7b 100644
--- a/docs/roadmap.md
+++ b/docs/roadmap.md
@@ -139,8 +139,7 @@
 
 **Post-M2 Refactoring:**
 - [ ] Unify `node.rs` from `lattice-cli` and `lattice-core`
-- [ ] Move `Store` code into `lattice-store` crate
-- [ ] Move `StoreActor` code into `lattice-store` crate
+- [ ] Use prost for node status in store
 
 ---
 
diff --git a/lattice-store/Cargo.toml b/lattice-store/Cargo.toml
deleted file mode 100644
index 1595012..0000000
--- a/lattice-store/Cargo.toml
+++ /dev/null
@@ -1,15 +0,0 @@
-[package]
-name = "lattice-store"
-description = "Log-based KV store with snapshots and watermarks"
-version.workspace = true
-edition.workspace = true
-license.workspace = true
-
-[dependencies]
-lattice-core = { workspace = true }
-tokio = { workspace = true }
-thiserror = { workspace = true }
-tracing = { workspace = true }
-
-[dev-dependencies]
-tokio-test = { workspace = true }
diff --git a/lattice-store/src/lib.rs b/lattice-store/src/lib.rs
deleted file mode 100644
index ac31584..0000000
--- a/lattice-store/src/lib.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-//! Lattice Store
-//!
-//! Log-based Key-Value store:
-//! - State is a "view" generated by replaying entries
-//! - Watermarks for agreeing on safe compaction points
-//! - Snapshots for replacing old logs
-
-pub mod store;
-pub mod snapshot;
-pub mod watermark;
-
-pub use store::Store;
diff --git a/lattice-store/src/snapshot.rs b/lattice-store/src/snapshot.rs
deleted file mode 100644
index 25ef69e..0000000
--- a/lattice-store/src/snapshot.rs
+++ /dev/null
@@ -1,6 +0,0 @@
-//! Snapshots for log compaction
-
-/// A verified snapshot that can replace old log entries.
-pub struct Snapshot {
-    // TODO: snapshot data, watermark, verification
-}
diff --git a/lattice-store/src/store.rs b/lattice-store/src/store.rs
deleted file mode 100644
index 2309df3..0000000
--- a/lattice-store/src/store.rs
+++ /dev/null
@@ -1,35 +0,0 @@
-//! The main KV store
-
-use std::collections::HashMap;
-
-/// A log-based Key-Value store.
-///
-/// The store is a dynamic "view" generated by replaying entries.
-pub struct Store {
-    data: HashMap<Vec<u8>, Vec<u8>>,
-}
-
-impl Store {
-    /// Create a new empty store.
-    pub fn new() -> Self {
-        Self {
-            data: HashMap::new(),
-        }
-    }
-
-    /// Get a value by key.
-    pub fn get(&self, key: &[u8]) -> Option<&[u8]> {
-        self.data.get(key).map(|v| v.as_slice())
-    }
-
-    /// Set a value (this would normally go through the log).
-    pub fn set(&mut self, key: Vec<u8>, value: Vec<u8>) {
-        self.data.insert(key, value);
-    }
-}
-
-impl Default for Store {
-    fn default() -> Self {
-        Self::new()
-    }
-}
diff --git a/lattice-store/src/watermark.rs b/lattice-store/src/watermark.rs
deleted file mode 100644
index 589e5cf..0000000
--- a/lattice-store/src/watermark.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-//! Watermarks for agreeing on safe compaction points
-
-/// A watermark representing a safe cut-off point for log compaction.
-///
-/// Nodes use watermarks to agree on which entries can be safely
-/// deleted and replaced with snapshots.
-pub struct Watermark {
-    // TODO: watermark data
-}