ci: add clean checkout and verification for frontend linting

- Force clean checkout to avoid stale cached files
- Clean /tmp/frontend-build before copying
- Add verification step to list lib directory contents
- This should resolve persistent frontend linting errors in CI

.gitea/workflows/ci.yml

@@ -58,12 +58,21 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+        with:
+          clean: true
       
       - name: Install dependencies and run linting
         run: |
+          # Clean any previous build artifacts
+          rm -rf /tmp/frontend-build
+          
           # Copy frontend to /tmp to avoid noexec issues with DynamicUser
           cp -r frontend /tmp/frontend-build
           
+          # Verify lib files are present
+          echo "Verifying frontend lib files..."
+          ls -la /tmp/frontend-build/src/lib/ || echo "WARNING: lib directory not found!"
+          
           # Install dependencies in executable location
           nix develop --quiet --command bash -c "
             cd /tmp/frontend-build