fix: restore correct paths for main branch in pre-commit workflow

Restored original pre-commit.yml with correct src/llama_stack paths and
npm cache path, then applied only the UV env var changes needed for mypy.

Also removed UV_INDEX_URL (only use UV_EXTRA_INDEX_URL).

.github/workflows/pre-commit.yml

@@ -43,25 +43,43 @@ jobs:
         with:
           node-version: '20'
           cache: 'npm'
-          cache-dependency-path: 'llama_stack/ui/'
+          cache-dependency-path: 'src/llama_stack/ui/'
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@2ddd2b9cb38ad8efd50337e8ab201519a34c9f24 # v7.1.1
 
       - name: Install npm dependencies
         run: npm ci
-        working-directory: llama_stack/ui
+        working-directory: src/llama_stack/ui
+
+      - name: Install pre-commit
+        run: python -m pip install pre-commit
+
+      - name: Cache pre-commit
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
+        with:
+          path: ~/.cache/pre-commit
+          key: pre-commit-3|${{ env.pythonLocation }}|${{ hashFiles('.pre-commit-config.yaml') }}
 
       - name: Run pre-commit
         id: precommit
-        uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # v3.0.1
-        continue-on-error: true
+        run: |
+          set +e
+          pre-commit run --show-diff-on-failure --color=always --all-files 2>&1 | tee /tmp/precommit.log
+          status=${PIPESTATUS[0]}
+          echo "status=$status" >> $GITHUB_OUTPUT
+          exit 0
         env:
-          SKIP: no-commit-to-branch
+          SKIP: no-commit-to-branch,mypy
           RUFF_OUTPUT_FORMAT: github
 
       - name: Check pre-commit results
-        if: steps.precommit.outcome == 'failure'
+        if: steps.precommit.outputs.status != '0'
         run: |
           echo "::error::Pre-commit hooks failed. Please run 'pre-commit run --all-files' locally and commit the fixes."
-          echo "::warning::Some pre-commit hooks failed. Check the output above for details."
+          echo ""
+          echo "Failed hooks output:"
+          cat /tmp/precommit.log
           exit 1
 
       - name: Debug
@@ -112,56 +130,37 @@ jobs:
             exit 1
           fi
 
-      - name: Install uv for mypy
-        uses: astral-sh/setup-uv@6b9c6063abd6010835644d4c2e1bef4cf5cd0fca # v6.0.1
-        with:
-          python-version: "3.12"
-          version: 0.7.6
-
       - name: Configure client installation
         id: client-config
         uses: ./.github/actions/install-llama-stack-client
 
-      - name: Sync dev dependencies for mypy
+      - name: Sync dev + type_checking dependencies
         env:
           UV_EXTRA_INDEX_URL: ${{ steps.client-config.outputs.uv-extra-index-url }}
-          UV_INDEX_STRATEGY: ${{ steps.client-config.outputs.uv-extra-index-url && 'unsafe-best-match' || '' }}
         run: |
-          # Check if type_checking group exists, otherwise just use dev
-          if grep -q "type.checking" pyproject.toml; then
-            echo "Found type_checking group, syncing with both groups"
-            uv sync --group dev --group type_checking
-            MYPY_CMD="uv run --group dev --group type_checking mypy"
-          else
-            echo "No type_checking group found, syncing with dev only"
-            uv sync --group dev
-            MYPY_CMD="uv run --group dev mypy"
+          if [ -n "$UV_EXTRA_INDEX_URL" ]; then
+            export UV_INDEX_STRATEGY="unsafe-best-match"
           fi
 
+          uv sync --group dev --group type_checking
+
           # Install specific client version after sync if needed
           if [ "${{ steps.client-config.outputs.install-after-sync }}" = "true" ]; then
             echo "Installing llama-stack-client from: ${{ steps.client-config.outputs.install-source }}"
             uv pip install ${{ steps.client-config.outputs.install-source }}
           fi
 
-          echo "MYPY_CMD=$MYPY_CMD" >> $GITHUB_ENV
-
-      - name: Run mypy (full type checking)
+      - name: Run mypy (full type_checking)
         env:
           UV_EXTRA_INDEX_URL: ${{ steps.client-config.outputs.uv-extra-index-url }}
-          UV_INDEX_STRATEGY: ${{ steps.client-config.outputs.uv-extra-index-url && 'unsafe-best-match' || '' }}
         run: |
-          set +e
-          output=$($MYPY_CMD 2>&1)
-          status=$?
-
-          # If mypy isn't available (common on older release branches), skip gracefully
-          if echo "$output" | grep -q "Failed to spawn.*mypy"; then
-            echo "::warning::mypy not available, skipping type checking (expected on release-0.3.x)"
-            exit 0
+          if [ -n "$UV_EXTRA_INDEX_URL" ]; then
+            export UV_INDEX_STRATEGY="unsafe-best-match"
           fi
 
-          echo "$output"
+          set +e
+          uv run --group dev --group type_checking mypy
+          status=$?
           if [ $status -ne 0 ]; then
             echo "::error::Full mypy failed. Reproduce locally with 'uv run pre-commit run mypy-full --hook-stage manual --all-files'."
           fi