test(e2e): mixed-version, two-client and phone layout baselines recorded on main (#27688)

* test(e2e): record mixed-version, two-client and phone layout baselines on main (P3)

* test(e2e): P3 review fixes: reconnect and I/O proof, restart order bounds, Linux-only baselines

* test(e2e): re-record Linux phone and serve-restart baselines

* test(e2e): P3: echo drawn in the desktop pane; bound the group selection after restart

* test(e2e): re-record serve-restart group selection

* test(e2e): name P3 baseline helpers for what they record

.github/workflows/packaged-browser-e2e.yml

@@ -1,4 +1,7 @@
 name: Packaged browser compatibility
+# Both jobs pair the current build with a pinned released one. `layout-compat` holds all the layout
+# rework baselines (P3), compared with the shapes recorded on main in
+# tests/e2e/layout-compat-baselines.json; its artifact carries the observed shapes for re-recording.
 on:
   workflow_dispatch:
     inputs:
@@ -30,27 +33,11 @@ jobs:
         with:
           native-runtime: electron
       - name: Download pinned old release
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          gh release download v1.4.188 --repo stablyai/orca --pattern orca-ide_1.4.188_amd64.deb --dir "$RUNNER_TEMP/old-orca"
-          python3 - <<'PYVERIFY'
-          import base64,hashlib,os,pathlib,subprocess
-          root=pathlib.Path(os.environ['RUNNER_TEMP'])/'old-orca'
-          package=root/'orca-ide_1.4.188_amd64.deb'
-          expected='uGONFUDfinYggxcT9ac72wnnlofLQaqasDDeP0HWOSqarBwTi1Ax3khmzKUY3vUnvuYOpSCEmsH4InzLZ2vg6g=='
-          digest=hashlib.sha512()
-          with package.open('rb') as archive:
-              for block in iter(lambda: archive.read(1024*1024), b''):
-                  digest.update(block)
-          assert base64.b64encode(digest.digest()).decode()==expected
-          extracted=root/'extracted'
-          subprocess.run(['dpkg-deb','-x',str(package),str(extracted)],check=True)
-          executable=extracted/'opt'/'Orca'/'orca-ide'
-          assert executable.is_file() and os.access(executable,os.X_OK)
-          with open(os.environ['GITHUB_ENV'],'a') as env: env.write('ORCA_CROSS_VERSION_PACKAGED_EXECUTABLE='+str(executable)+'\n')
-          print('Verified old package:',executable)
-          PYVERIFY
+        uses: ./.github/actions/download-pinned-orca-release
+        with:
+          version: 1.4.188
+          sha512: uGONFUDfinYggxcT9ac72wnnlofLQaqasDDeP0HWOSqarBwTi1Ax3khmzKUY3vUnvuYOpSCEmsH4InzLZ2vg6g==
+          github-token: ${{ github.token }}
       - name: Build current Electron app
         env:
           VITE_EXPOSE_STORE: 'true'
@@ -76,3 +63,56 @@ jobs:
           name: packaged-mixed-version-audit
           path: test-results/
           retention-days: 3
+  layout-compat:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          ref: ${{ inputs.ref || github.sha }}
+          persist-credentials: false
+      - name: Install headless tools
+        run: sudo apt-get update && sudo apt-get install -y build-essential openssh-client python3 ripgrep xvfb zsh openbox x11-utils
+      - uses: ./.github/actions/install-node-dependencies
+        with:
+          native-runtime: electron
+      - name: Download pinned old release
+        uses: ./.github/actions/download-pinned-orca-release
+        with:
+          version: 1.4.224
+          sha512: +/VyaYSgqSAuSSWe1ySrCKRjHHJ6REXqmz58g69bxvoUdV41iH9vlobM18xdxWTkgJF2kbu/tSKFvH0jMnZ0+Q==
+          github-token: ${{ github.token }}
+      - name: Build current Electron app
+        env:
+          VITE_EXPOSE_STORE: 'true'
+        run: |
+          pnpm run build:relay
+          pnpm exec electron-vite build --mode e2e
+          pnpm run build:cli
+          pnpm run build:web-from-renderer
+      # The two specs without a released build ride along, so one dispatch reruns every baseline.
+      - name: Run the layout baselines
+        env:
+          ORCA_LAYOUT_COMPAT_REPORT_DIR: test-results/layout-compat
+        run: >-
+          xvfb-run --auto-servernum bash .github/scripts/e2e-with-window-manager.sh
+          env SKIP_BUILD=1 ORCA_E2E_FORWARD_APP_LOGS=1
+          pnpm exec playwright test --config tests/playwright.config.ts
+          tests/e2e/layout-compat-old-desktop-on-new-server.spec.ts
+          tests/e2e/layout-compat-new-desktop-on-old-server.spec.ts
+          tests/e2e/layout-compat-old-phone-on-new-server.spec.ts
+          tests/e2e/layout-compat-serve-restart-keeps-at-at-terminals.spec.ts
+          --project=electron-headless --workers=1 --retries=0 --reporter=list
+      - name: Require every layout scenario to have run
+        if: always()
+        # A missing env skips the specs and passes; each run writes its observation first.
+        run: |
+          for scenario in old-desktop-on-new-server old-cli-terminal-create new-desktop-on-old-server old-phone-on-new-server serve-restart-keeps-@@-terminals; do
+            test -f "test-results/layout-compat/$scenario.linux.json" || { echo "::error::$scenario did not run"; exit 1; }
+          done
+      - uses: actions/upload-artifact@v7
+        if: always()
+        with:
+          name: packaged-layout-compat
+          path: test-results/
+          retention-days: 7