ci: split workflow into backend, frontend, and perf workflows with path filters, and configure Vercel ignoreBuildStep

.github/workflows/backend.yml

@@ -0,0 +1,43 @@
+name: Backend CI
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'backend/**'
+      - 'tests/backend/**'
+      - 'ruff.toml'
+      - 'pytest.ini'
+      - '.github/workflows/backend.yml'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'backend/**'
+      - 'tests/backend/**'
+      - 'ruff.toml'
+      - 'pytest.ini'
+      - '.github/workflows/backend.yml'
+
+jobs:
+  backend-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install ruff pytest-cov
+          pip install -r backend/requirements.txt
+      
+      - name: Lint with ruff
+        run: ruff check backend/ tests/backend/
+
+      - name: Run pytest
+        run: python -m pytest tests/backend -q --cov=backend --cov-report=term-missing

.github/workflows/ci.yml

@@ -1,101 +0,0 @@
-name: CI
-
-on:
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
-
-jobs:
-  backend-tests:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install ruff pytest-cov
-          pip install -r backend/requirements.txt
-      
-      - name: Lint with ruff
-        run: ruff check backend/ tests/backend/
-
-      - name: Run pytest
-        run: python -m pytest tests/backend -q --cov=backend --cov-report=term-missing
-
-  perf-metrics:
-    runs-on: ubuntu-latest
-    needs: backend-tests
-    # Only run on push to main – not on PRs (no live deployment to hit)
-    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-    permissions:
-      contents: write
-    environment: Test
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.11'
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install httpx pandas openpyxl
-
-      - name: Measure deployed performance
-        env:
-          BACKEND_URL: https://bulk-questionnaire-upload.onrender.com
-        run: python scripts/measure_perf.py
-
-      - name: Update README metrics table
-        run: python scripts/update_readme_metrics.py
-
-      - name: Commit updated README
-        run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "github-actions[bot]@users.noreply.github.com"
-          git add README.md
-          if git diff --cached --quiet; then
-            echo "No changes to README metrics."
-          else
-            git commit -m "chore: update performance metrics from CI [skip ci]"
-            git push
-          fi
-
-  frontend-tests:
-    runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: frontend
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Setup Node
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-          cache: 'npm'
-          cache-dependency-path: frontend/package-lock.json
-
-      - name: Install dependencies
-        run: npm ci
-
-      - name: Build (type-check + Angular compilation)
-        run: npm run build
-
-      - name: Run Vitest
-        run: npm run test:run
-

.github/workflows/frontend.yml

@@ -0,0 +1,41 @@
+name: Frontend CI
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'frontend/**'
+      - 'tests/frontend/**'
+      - '.github/workflows/frontend.yml'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'frontend/**'
+      - 'tests/frontend/**'
+      - '.github/workflows/frontend.yml'
+
+jobs:
+  frontend-tests:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: frontend
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build (type-check + Angular compilation)
+        run: npm run build
+
+      - name: Run Vitest
+        run: npm run test:run

.github/workflows/perf.yml

@@ -0,0 +1,52 @@
+name: Deployed Performance Metrics CI
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'backend/**'
+      - 'tests/backend/**'
+      - 'scripts/**'
+      - '.github/workflows/perf.yml'
+
+jobs:
+  perf-metrics:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    environment: Test
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install httpx pandas openpyxl
+
+      - name: Measure deployed performance
+        env:
+          BACKEND_URL: https://bulk-questionnaire-upload.onrender.com
+        run: python scripts/measure_perf.py
+
+      - name: Update README metrics table
+        run: python scripts/update_readme_metrics.py
+
+      - name: Commit updated README
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git add README.md
+          if git diff --cached --quiet; then
+            echo "No changes to README metrics."
+          else
+            git commit -m "chore: update performance metrics from CI [skip ci]"
+            git push
+          fi

frontend/vercel.json

@@ -3,6 +3,9 @@
   "buildCommand": "npm run build",
   "outputDirectory": "dist/mform-upload/browser",
   "installCommand": "npm install",
+  "git": {
+    "ignoreBuildStep": "git log -1 --pretty=%B | grep -q '\\[skip ci\\]' || git diff --quiet HEAD^ HEAD -- ."
+  },
   "rewrites": [
     { "source": "/(.*)", "destination": "/index.html" }
   ]