chore: enable benchmarks and align workflow caching

- Enable benchmarks in CI by setting ENABLE_BENCHMARK="true"
- Update _benchmark.yml to use split restore/save cache pattern matching _test.yml
- Remove non-functional save-always parameter
- Ensure caches are saved even on benchmark failure using if: always()

This ensures benchmark workflow has the same robust caching as the test workflow.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: arman-bd

.github/workflows/_benchmark.yml

@@ -75,32 +75,31 @@ jobs:
         echo "CXX=ccache g++" >> $GITHUB_ENV
       shell: bash
 
-    - name: Cache vendor dependencies
+    - name: Restore vendor cache
       id: cache-vendor
-      uses: actions/cache@v4
+      uses: actions/cache/restore@v4
       with:
         path: vendor
         key: vendor-${{ runner.os }}-${{ hashFiles('scripts/setup_vendors.sh') }}-v7
         restore-keys: |
           vendor-${{ runner.os }}-
-        save-always: true
 
     - name: Setup vendor dependencies
       if: steps.cache-vendor.outputs.cache-hit != 'true'
       run: |
         chmod +x scripts/setup_vendors.sh
         ./scripts/setup_vendors.sh
 
-    - name: Cache Python build artifacts
-      uses: actions/cache@v4
+    - name: Restore Python build cache
+      id: cache-python-build
+      uses: actions/cache/restore@v4
       with:
         path: |
           build/
           *.egg-info/
         key: python-build-${{ runner.os }}-${{ inputs.primary-python }}-${{ hashFiles('setup.py', 'pyproject.toml', 'src/**/*.c', 'src/**/*.cpp', 'src/**/*.h') }}
         restore-keys: |
           python-build-${{ runner.os }}-${{ inputs.primary-python }}-
-        save-always: true
 
     - name: Install package
       run: pip install -e ".[dev,benchmark]"
@@ -115,3 +114,20 @@ jobs:
         output-file-path: benchmark.json
         github-token: ${{ secrets.GITHUB_TOKEN }}
         auto-push: true
+
+    # Save caches even if benchmarks fail (using always())
+    - name: Save vendor cache
+      if: always() && steps.cache-vendor.outputs.cache-hit != 'true'
+      uses: actions/cache/save@v4
+      with:
+        path: vendor
+        key: vendor-${{ runner.os }}-${{ hashFiles('scripts/setup_vendors.sh') }}-v7
+
+    - name: Save Python build cache
+      if: always()
+      uses: actions/cache/save@v4
+      with:
+        path: |
+          build/
+          *.egg-info/
+        key: python-build-${{ runner.os }}-${{ inputs.primary-python }}-${{ hashFiles('setup.py', 'pyproject.toml', 'src/**/*.c', 'src/**/*.cpp', 'src/**/*.h') }}

.github/workflows/_config.yml

@@ -63,13 +63,14 @@ jobs:
           OS_MATRIX='[
             "windows-latest"
           ]'
+          # OS options: "windows-latest", "ubuntu-latest", "macos-latest"
 
           # Python versions to test
           # Comment out any version you want to skip during development
           PYTHON_MATRIX='[
             "3.11"
           ]'
-          # To add more versions: "3.9", "3.10", "3.12"
+          # Python versions: "3.9", "3.10", "3.11", "3.12"
 
           # Primary OS and Python for single-runner jobs
           PRIMARY_OS="ubuntu-latest"
@@ -78,7 +79,7 @@ jobs:
           # Enable/Disable Jobs
           # Set to "true" or "false"
           ENABLE_TESTS="true"
-          ENABLE_BENCHMARK="false"
+          ENABLE_BENCHMARK="true"
 
           # ============================================================
           # END CONFIGURATION