chore: add husky pre-commit hook and CI lint workflow

- Add husky with biome check --staged --write pre-commit hook
- Add GitHub Actions lint workflow (biome ci on PR/push to main)
- Update CONTRIBUTING.md with pre-commit and CI documentation

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/lint.yml

@@ -0,0 +1,24 @@
+name: Lint
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+
+      - run: pnpm install --frozen-lockfile
+
+      - name: Biome CI
+        run: pnpm exec biome ci

.husky/pre-commit

@@ -0,0 +1 @@
+pnpm exec biome check --staged --write --no-errors-on-unmatched

CONTRIBUTING.md

@@ -136,15 +136,25 @@ pnpm lint:fix      # auto-fix
 
 Rust code follows standard `rustfmt` conventions.
 
+### Pre-commit Hook
+
+A [Husky](https://typicode.github.io/husky/) pre-commit hook runs automatically on every commit. It checks and auto-fixes staged files via `biome check --staged --write`, so lint issues are caught before they reach the repository.
+
+The hook is set up automatically when you run `pnpm install`.
+
+### CI
+
+A GitHub Actions workflow runs `biome ci` on every pull request and push to `main`. PRs that fail lint checks cannot be merged.
+
 ## Pull Request Process
 
 1. Fork the repository
 2. Create a feature branch (`git checkout -b feat/my-feature`)
 3. Make your changes
 4. Run tests: `pnpm test` (frontend) and `cargo test` (Rust)
-5. Run `pnpm lint` to ensure code quality
-6. Commit with a descriptive message
-7. Push to your fork and open a PR
+5. Commit — the pre-commit hook will auto-fix lint issues on staged files
+6. Push to your fork and open a PR
+7. CI will verify lint and tests pass
 
 ### Commit Convention
 

package.json

@@ -17,10 +17,12 @@
     "build:desktop": "pnpm --filter=@claude-prism/desktop tauri build",
     "lint": "pnpm exec biome check",
     "lint:fix": "pnpm exec biome check --fix",
-    "release": "echo 'To release: git tag v<version> && git push origin v<version>'"
+    "release": "echo 'To release: git tag v<version> && git push origin v<version>'",
+    "prepare": "husky"
   },
   "devDependencies": {
     "@biomejs/biome": "^2.3.13",
+    "husky": "^9.1.7",
     "turbo": "^2.7.6"
   },
   "packageManager": "pnpm@10.28.2",

pnpm-lock.yaml

@@ -18,6 +18,9 @@ importers:
       '@biomejs/biome':
         specifier: ^2.3.13
         version: 2.3.13
+      husky:
+        specifier: ^9.1.7
+        version: 9.1.7
       turbo:
         specifier: ^2.7.6
         version: 2.7.6
@@ -4538,6 +4541,11 @@ packages:
   humanize-ms@1.2.1:
     resolution: {integrity: sha512-Fl70vYtsAFb/C06PTS9dZBo7ihau+Tu/DNCk/OyHhea07S+aeMWpFFkUaXRa8fI+ScZbEI8dfSxwY7gxZ9SAVQ==}
 
+  husky@9.1.7:
+    resolution: {integrity: sha512-5gs5ytaNjBrh5Ow3zrvdUUY+0VxIuWVL4i9irt6friV+BqdCfmV11CQTWMiBYWHbXhco+J1kHfTOUkePhCDvMA==}
+    engines: {node: '>=18'}
+    hasBin: true
+
   iconv-lite@0.6.3:
     resolution: {integrity: sha512-4fCk79wshMdzMp2rH06qWrJE4iolqLhCUH+OiuIgU++RB0+94NlDL81atO7GX55uUKueo0txHNtvEyI6D7WdMw==}
     engines: {node: '>=0.10.0'}
@@ -11524,6 +11532,8 @@ snapshots:
     dependencies:
       ms: 2.1.3
 
+  husky@9.1.7: {}
+
   iconv-lite@0.6.3:
     dependencies:
       safer-buffer: 2.1.2