ci(frontend): reuse production build in smoke

.gitea/workflows/ci-deploy.yml

@@ -190,6 +190,30 @@ jobs:
           echo "Frontend test process crashed with SIGSEGV — retrying the complete suite once..."
           npm test -- --watchAll=false --runInBand
 
+      - name: Build frontend
+        working-directory: job-tracker-ui
+        env:
+          CI: 'false'
+          GENERATE_SOURCEMAP: 'false'
+          NODE_OPTIONS: --max-old-space-size=4096
+        # Build once, then make Playwright serve this exact export. A SIGSEGV-only retry preserves
+        # the runner workaround without hiding an ordinary compiler or type-check failure.
+        run: |
+          set +e
+          npm run build
+          build_status=$?
+          set -e
+
+          if [ "$build_status" -eq 0 ]; then
+            exit 0
+          fi
+          if [ "$build_status" -ne 139 ]; then
+            exit "$build_status"
+          fi
+
+          echo "Frontend build process crashed with SIGSEGV — retrying once..."
+          npm run build
+
       - name: Install browser smoke runtime
         working-directory: job-tracker-ui
         env:
@@ -206,6 +230,7 @@ jobs:
           # Exercise the deployable frontend and avoid Turbopack's persistence crashes on
           # this runner's slow Docker volume.
           PLAYWRIGHT_STATIC_EXPORT: 'true'
+          PLAYWRIGHT_PREBUILT_EXPORT: 'true'
         # The runner occasionally terminates an otherwise healthy Node process with
         # SIGSEGV/139. Retry only that infrastructure signature. Do not reinstall npm
         # or browser payloads here: doing so used to redownload hundreds of megabytes
@@ -227,19 +252,6 @@ jobs:
           echo "Browser smoke process crashed with SIGSEGV — retrying the unchanged suite once..."
           npm run test:e2e
 
-      - name: Build frontend
-        working-directory: job-tracker-ui
-        env:
-          CI: 'false'
-          GENERATE_SOURCEMAP: 'false'
-          NODE_OPTIONS: --max-old-space-size=4096
-        # CRA's build (Terser minify + fork-ts-checker workers) has repeatedly died silently on
-        # this runner with no error output (OOM/SIGSEGV signature — same resource-starved-runner
-        # class as the npm ci and dotnet-install flakes elsewhere in this workflow). Retry once.
-        run: |
-          npm run build \
-            || ( echo "Frontend build failed ($?) — retrying once..." && npm run build )
-
   deploy:
     needs: test
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'