Optimize CI workflow with caching and env vars

Adds environment variables for Python version and attempt count, implements caching for Python dependencies and Playwright browsers, and improves Playwright installation steps. These changes reduce redundant installs and speed up workflow execution.

Author: karangattu

.github/workflows/validate-test-generation-prompts.yaml

@@ -12,6 +12,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+env:
+  PYTHON_VERSION: '3.12'
+  ATTEMPTS: 3
+
 jobs:
   validate-prompts:
     runs-on: ubuntu-latest
@@ -25,15 +29,38 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: ${{ env.PYTHON_VERSION }}
+          cache: 'pip'
+
+      - name: Cache Python dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements*.txt', 'setup.py', 'pyproject.toml') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
 
       - name: Install dependencies
         run: |
+          pip install --upgrade pip
           pip install -e ".[dev,test]"
 
+      - name: Cache Playwright browsers
+        uses: actions/cache@v4
+        id: playwright-cache
+        with:
+          path: ~/.cache/ms-playwright
+          key: ${{ runner.os }}-playwright-${{ hashFiles('**/requirements*.txt', 'setup.py') }}
+
       - name: Install Playwright browsers
-        run: |
-          playwright install
+        if: steps.playwright-cache.outputs.cache-hit != 'true'
+        run: playwright install --with-deps
+
+      - name: Install Playwright dependencies only
+        if: steps.playwright-cache.outputs.cache-hit == 'true'
+        run: playwright install-deps
+
+
 
       - name: Run Evaluation and Tests 3 Times
         env:
@@ -106,6 +133,8 @@ jobs:
             exit 1
           fi
 
+
+
       - name: Prepare Comment Body
         if: github.event_name == 'pull_request'
         run: |