feat: add test count display to Playwright PR comments (#5458)

* feat: add test count display to Playwright PR comments

- Add extract-playwright-counts.mjs script to parse test results from Playwright reports
- Update pr-playwright-deploy-and-comment.sh to extract and display test counts
- Show overall summary with passed/failed/flaky/skipped counts
- Display per-browser test counts inline with report links
- Use dynamic status icons based on test results (✅/❌/⚠️)

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

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

* feat: include skipped test count in per-browser display

- Add skipped test extraction for individual browser reports
- Update per-browser display format to show all four counts:
  (✅ passed / ❌ failed / ⚠️ flaky / ⏭️ skipped)
- Provides complete test result visibility at a glance

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

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

* fix: improve test count extraction reliability in CI

- Use absolute paths for script and report directories
- Add debug logging to help diagnose extraction issues
- Move counts display after View Report link as requested
- Format: [View Report](url) • ✅ passed / ❌ failed / ⚠️ flaky / ⏭️ skipped

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

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

* fix: generate JSON reports alongside HTML for test count extraction

- Add JSON reporter to Playwright test runs
- Generate report.json alongside HTML reports
- Store JSON report in playwright-report directory
- This enables accurate test count extraction from CI artifacts

The HTML reports alone don't contain easily extractable test statistics
as they use a React app with dynamically loaded data. JSON reports
provide direct access to test counts.

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

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

* fix: correct JSON reporter syntax for Playwright tests

- Use proper syntax for JSON reporter with outputFile option
- Run separate commands for HTML and JSON report merging
- Specify output path directly in reporter configuration
- Ensures report.json is created in playwright-report directory

This fixes the "No such file or directory" error when trying to move
report.json file, as it wasn't being created in the first place.

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

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

* Revert "fix: correct JSON reporter syntax for Playwright tests"

This reverts commit 605d7cc1e2.

* fix: use correct Playwright reporter syntax with comma-separated list

- Use --reporter=html,json syntax (comma-separated, not space)
- Move test-results.json to playwright-report/report.json after generation
- Remove incorrect PLAYWRIGHT_JSON_OUTPUT_NAME env variable
- Add || true to prevent failure if JSON file doesn't exist

The JSON reporter outputs to test-results.json by default when using
the comma-separated reporter list syntax.

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

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

* fix: improve test count extraction reliability in CI

- Use separate --reporter flags for list, html, and json
- Set PLAYWRIGHT_JSON_OUTPUT_NAME env var to specify JSON output path
- Run HTML and JSON report generation separately for merged reports
- Ensures report.json is created in playwright-report directory

The combined reporter syntax wasn't creating the JSON file properly.
Using separate reporter flags with env var ensures JSON is generated.

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

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

* Update scripts/cicd/pr-playwright-deploy-and-comment.sh

Co-authored-by: Alexander Brown <drjkl@comfy.org>

* refactor: convert extraction script to TypeScript and use tsx

- Convert extract-playwright-counts.mjs to TypeScript (.ts)
- Add proper TypeScript types for better type safety
- Use tsx for execution instead of node
- Auto-install tsx in CI if not available
- Better alignment with the TypeScript codebase

This provides better type safety and consistency with the rest of
the codebase while maintaining the same functionality.

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

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

* chore(pr-playwright-deploy-and-comment.sh): move tsx installation check to the beginning of the script for better organization and efficiency

* [auto-fix] Apply ESLint and Prettier fixes

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Alexander Brown <drjkl@comfy.org>
Co-authored-by: GitHub Action <action@github.com>

.github/workflows/test-ui.yaml

@@ -229,7 +229,13 @@ jobs:
 
       - name: Run Playwright tests (${{ matrix.browser }})
         id: playwright
-        run: npx playwright test --project=${{ matrix.browser }} --reporter=html
+        run: |
+          # Run tests with both HTML and JSON reporters
+          PLAYWRIGHT_JSON_OUTPUT_NAME=playwright-report/report.json \
+          npx playwright test --project=${{ matrix.browser }} \
+            --reporter=list \
+            --reporter=html \
+            --reporter=json
         working-directory: ComfyUI_frontend
 
       - uses: actions/upload-artifact@v4
@@ -275,7 +281,12 @@ jobs:
           merge-multiple: true
 
       - name: Merge into HTML Report
-        run: npx playwright merge-reports --reporter html ./all-blob-reports
+        run: |
+          # Generate HTML report
+          npx playwright merge-reports --reporter=html ./all-blob-reports
+          # Generate JSON report separately with explicit output path
+          PLAYWRIGHT_JSON_OUTPUT_NAME=playwright-report/report.json \
+          npx playwright merge-reports --reporter=json ./all-blob-reports
         working-directory: ComfyUI_frontend
 
       - name: Upload HTML report