diff --git a/frontend/README.md b/frontend/README.md
index 95da726..68f7742 100644
--- a/frontend/README.md
+++ b/frontend/README.md
@@ -33,6 +33,15 @@ npm run build
 - Output written to `dist/`
 - Set `API_BASE_URL` in `.env.local` if the API is not served from the same origin.
 
+## Code Quality
+
+```bash
+npm run check
+```
+
+- Runs TypeScript type checking (`tsc`) and ESLint.
+- Use this before committing changes.
+
 ## Features
 
 - Finder-style layout: folder tree, document table, and detail pane with metadata & tags