Update testing docs workflows and validation

Removed the auto-update workflow for testing documentation, added a new workflow to validate changes in the controller directory and prompt for documentation updates, and renamed the conventional commits workflow for clarity.

Author: karangattu

.github/workflows/testing-docs-update.yml

@@ -0,0 +1,70 @@
+name: Validate Testing Documentation
+
+on:
+  pull_request:
+    paths:
+      - 'docs/_quartodoc-testing.yml'
+      - 'shiny/playwright/controller/**'
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  validate-controller-changes:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Check for controller changes
+        id: check-controller
+        run: |
+          # Check if any files in shiny/playwright/controller have changed
+          if git diff --name-only origin/${{ github.base_ref }}...HEAD | grep -q '^shiny/playwright/controller/'; then
+            echo "controller_changed=true" >> $GITHUB_OUTPUT
+            echo "Changes detected in shiny/playwright/controller directory"
+          else
+            echo "controller_changed=false" >> $GITHUB_OUTPUT
+            echo "No changes detected in shiny/playwright/controller directory"
+          fi
+
+      - name: Comment on PR about testing docs update
+        if: steps.check-controller.outputs.controller_changed == 'true'
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          header: testing-docs-update
+          message: |
+            🤖 **Testing Documentation Update Required**
+
+            We detected changes in the `shiny/playwright/controller` directory. These changes may affect the testing documentation used by the `shiny add test` command.
+
+            **Please run the following commands to update the testing documentation:**
+
+            ```bash
+            # Install repomix if not already installed
+            npm install -g repomix
+
+            # Generate updated testing documentation
+            repomix docs/api/testing -o shiny/testing/utils/scripts/repomix-output-testing.xml
+            python shiny/testing/utils/scripts/process_docs.py --input shiny/testing/utils/scripts/repomix-output-testing.xml --output shiny/testing/generator/data/docs/documentation_testing.json
+
+            # Clean up temporary files
+            rm -f shiny/testing/utils/scripts/repomix-output-testing.xml
+            ```
+
+            This will ensure that the AI test generator has access to the latest controller API documentation.
+
+            ---
+            *This comment was automatically generated by the validate_testing_docs workflow.*
+
+      - name: Remove comment when no controller changes
+        if: steps.check-controller.outputs.controller_changed == 'false'
+        uses: marocchino/sticky-pull-request-comment@v2
+        with:
+          header: testing-docs-update
+          delete: true