feat: Add CI workflow for cloud E2E tests

- Create ci-tests-e2e-cloud.yaml workflow
- Manual trigger via workflow_dispatch
- Uses CLOUD_TEST_EMAIL and CLOUD_TEST_PASSWORD secrets
- Add CLOUD_TESTS.md documentation

.github/workflows/ci-tests-e2e-cloud.yaml

@@ -0,0 +1,52 @@
+name: "CI: Tests E2E Cloud"
+description: "Cloud E2E testing with Playwright against stagingcloud.comfy.org"
+
+on:
+  workflow_dispatch: # Manual trigger for now
+  # Uncomment to enable on push/PR:
+  # push:
+  #   branches: [cloud/*, main]
+  # pull_request:
+  #   branches: [main]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  playwright-tests-cloud:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Setup frontend
+        uses: ./.github/actions/setup-frontend
+        with:
+          include_build_step: false # Cloud tests don't need build
+
+      - name: Setup Playwright
+        uses: ./.github/actions/setup-playwright
+
+      - name: Run Playwright cloud tests
+        id: playwright
+        env:
+          CLOUD_TEST_EMAIL: ${{ secrets.CLOUD_TEST_EMAIL }}
+          CLOUD_TEST_PASSWORD: ${{ secrets.CLOUD_TEST_PASSWORD }}
+        run: |
+          PLAYWRIGHT_JSON_OUTPUT_NAME=playwright-report/report.json \
+          pnpm exec playwright test --config=playwright.cloud.config.ts \
+            --reporter=list \
+            --reporter=html \
+            --reporter=json
+
+      - name: Upload Playwright report
+        uses: actions/upload-artifact@v4
+        if: always()
+        with:
+          name: playwright-report-cloud
+          path: ./playwright-report/
+          retention-days: 30

browser_tests/tests/CLOUD_TESTS.md

@@ -0,0 +1,36 @@
+# Cloud E2E Tests
+
+## Setup
+
+Cloud tests run against `https://stagingcloud.comfy.org` with Firebase authentication.
+
+### Required GitHub Secrets
+
+Add these to repository settings → Secrets → Actions:
+
+- `CLOUD_TEST_EMAIL`: Firebase test account email
+- `CLOUD_TEST_PASSWORD`: Firebase test account password
+
+### Running Locally
+
+```bash
+# Set environment variables
+export CLOUD_TEST_EMAIL="your-test-email@example.com"
+export CLOUD_TEST_PASSWORD="your-password"
+
+# Run cloud tests
+pnpm exec playwright test --config=playwright.cloud.config.ts
+```
+
+### Running in CI
+
+Workflow: `.github/workflows/ci-tests-e2e-cloud.yaml`
+
+Trigger manually via Actions tab → "CI: Tests E2E Cloud" → Run workflow
+
+### Test Structure
+
+- Tests tagged with `@cloud` run only in cloud config
+- Auth handled once in `globalSetupCloud.ts`
+- Auth state saved to `browser_tests/.auth/cloudUser.json`
+- Cloud fixture in `fixtures/ComfyPageCloud.ts`