ci: harden Playwright smoke retry

Use the lockfile-installed CLI and retry only runner SIGSEGV failures. Avoid reinstalling dependencies through the same unreliable transport after a transient crash.

.gitea/workflows/ci-deploy.yml

@@ -192,7 +192,13 @@ jobs:
 
       - name: Install browser smoke runtime
         working-directory: job-tracker-ui
-        run: npx playwright install --with-deps chromium
+        env:
+          PLAYWRIGHT_DOWNLOAD_CONNECTION_TIMEOUT: '120000'
+        run: |
+          # Invoke the lockfile-installed CLI directly. `npx` may create a second
+          # temporary dependency tree when its cache is damaged, which made this
+          # runner's intermittent truncated downloads substantially worse.
+          node ./node_modules/@playwright/test/cli.js install --with-deps chromium
 
       - name: Test browser smoke flows
         working-directory: job-tracker-ui
@@ -200,22 +206,25 @@ jobs:
           # Exercise the deployable frontend and avoid Turbopack's persistence crashes on
           # this runner's slow Docker volume.
           PLAYWRIGHT_STATIC_EXPORT: 'true'
-        # This self-hosted runner has twice corrupted Playwright's installed JS/browser
+        # The runner occasionally terminates an otherwise healthy Node process with
-        # payload (invalid control bytes followed by SIGSEGV/139). Retry the complete
+        # SIGSEGV/139. Retry only that infrastructure signature. Do not reinstall npm
-        # suite once from a verified, clean install. The retry is intentionally bounded;
+        # or browser payloads here: doing so used to redownload hundreds of megabytes
-        # a genuine or repeated browser-test failure still blocks deployment.
+        # through the same unreliable transport and made a transient crash persistent.
+        # Assertion/configuration failures remain terminal and always block deployment.
         run: |
-          if npm run test:e2e; then
+          set +e
+          npm run test:e2e
+          smoke_status=$?
+          set -e
+
+          if [ "$smoke_status" -eq 0 ]; then
             exit 0
-          else
+          fi
-            smoke_status=$?
+          if [ "$smoke_status" -ne 139 ]; then
+            exit "$smoke_status"
           fi
 
-          echo "Browser smoke failed ($smoke_status) — rebuilding the browser runtime and retrying once..."
+          echo "Browser smoke process crashed with SIGSEGV — retrying the unchanged suite once..."
-          rm -rf node_modules
-          recovery_cache="$(mktemp -d)"
-          npm ci --no-audit --no-fund --cache "$recovery_cache"
-          npx playwright install --with-deps --force chromium
           npm run test:e2e
 
       - name: Build frontend