feat: create single test timeout debug workflow

Runs just one test ("within on form") with browser restart to confirm
that even individual tests cause the 18-minute timeout issue.

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

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

Author: DavertMik

.github/workflows/single-test-timeout.yml

@@ -0,0 +1,46 @@
+name: Single Test Timeout Debug
+
+on:
+  push:
+    branches: [feat/esm]
+  pull_request:
+    branches: [feat/esm, 3.x]
+
+jobs:
+  test-single-scenario:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use Node.js 20.x
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: 7.4
+      - name: npm install
+        run: |
+          npm i --force
+        env:
+          PUPPETEER_SKIP_CHROMIUM_DOWNLOAD: true
+      - name: Allow Release info Change
+        run: |
+          sudo apt-get update --allow-releaseinfo-change
+      - name: Install browsers and deps
+        run: npx playwright install && npx playwright install-deps
+      - name: check
+        run: './bin/codecept.js check -c test/acceptance/codecept.Playwright.js'
+        timeout-minutes: 2
+      - name: start a server
+        run: 'php -S 127.0.0.1:8000 -t test/data/app &'
+      - name: start json-server
+        run: 'npm run json-server &'
+      - name: wait for servers
+        run: 'sleep 3'
+      - name: run single test with browser restart
+        run: |
+          echo "=== Running single test with browser restart ==="
+          timeout 120 env BROWSER_RESTART=browser ./bin/codecept.js run --config test/acceptance/codecept.Playwright.js --grep "within on form" --verbose
+          echo "Exit code: $?"
+        timeout-minutes: 3