fix: unset NODE_ENV in e2e job so devDependencies install

npm treats NODE_ENV=production as --omit=dev, so `npm install` in the
frontend-e2e job skipped typescript and the build died on `tsc: not found`.
The same env var would have stripped vite and @playwright/test from the
frontend install, and flipped the session cookie to Secure on a run served
over plain http.

The reported summarize crash was a symptom: the job aborted before Playwright
ran, but Summarize is `if: always()` and threw ENOENT on the missing JSON,
burying the real failure. Both summarize scripts now report the missing file
and exit 0 -- the job still fails via its own step.

Also split build from start, replaced `sleep 3` with a readiness poll against
/api/config, and dump the backend log when e2e fails.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.gitea/workflows/tests.yml

@@ -107,7 +107,10 @@ jobs:
       PORT: 3000
       DEMO_MODE: 'true'
       UPLOADS_DIR: /tmp/redefined-uploads
-      NODE_ENV: production
+      # NODE_ENV is deliberately unset: `npm install` omits devDependencies when
+      # NODE_ENV=production, which strips tsc/vite/@playwright/test and breaks the
+      # build. It would also flip the session cookie to Secure, which the e2e run
+      # serves over plain http.
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -125,12 +128,24 @@ jobs:
         run: node migrate.js up
         working-directory: backend
 
-      - name: Build and start backend
+      - name: Build backend
+        run: npm run build
+        working-directory: backend
+
+      - name: Start backend
         run: |
           mkdir -p /tmp/redefined-uploads
-          npm run build
-          node dist/server.js &
-          sleep 3
+          node dist/server.js > /tmp/backend.log 2>&1 &
+          for i in $(seq 1 30); do
+            if node -e "require('http').get('http://localhost:3000/api/config', r => process.exit(r.statusCode === 200 ? 0 : 1)).on('error', () => process.exit(1))"; then
+              echo "Backend ready after ${i}s"
+              exit 0
+            fi
+            sleep 1
+          done
+          echo "Backend did not become ready within 30s:"
+          cat /tmp/backend.log
+          exit 1
         working-directory: backend
 
       - name: Install frontend deps
@@ -149,6 +164,10 @@ jobs:
         run: npx playwright test --reporter=json
         working-directory: frontend
 
+      - name: Backend log
+        if: steps.e2e.outcome == 'failure'
+        run: cat /tmp/backend.log
+
       - name: Summarize
         if: always()
         run: node scripts/summarize-playwright.js frontend/playwright-results.json