Speed up CI pipeline: merge lint+test, remove runInBand, drop unused mongo service

- Combine lint and test into a single 'ci' job (eliminates duplicate
  checkout + npm ci, saving ~60-90s)
- Remove --runInBand flag so Jest parallelizes across worker pools
- Remove unused mongo:7 service container (tests use MongoMemoryServer)
- Fix failure detection: check step outcomes instead of job result,
  which was always 'success' due to continue-on-error

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/deploy.yml

@@ -12,15 +12,17 @@ env:
 
 jobs:
   # ============================================================
-  # Lint Job - ESLint static analysis
+  # CI Job - Lint + Test in a single job (one checkout, one npm ci)
   # ============================================================
-  lint:
-    name: Run Linting
+  ci:
+    name: Lint & Test
     runs-on: ubuntu-latest
 
     outputs:
-      status: ${{ steps.lint.outcome }}
-      output: ${{ steps.lint.outputs.lint_output }}
+      lint_status: ${{ steps.lint.outcome }}
+      lint_output: ${{ steps.lint.outputs.lint_output }}
+      test_status: ${{ steps.test.outcome }}
+      test_output: ${{ steps.test.outputs.test_output }}
 
     steps:
       - name: Checkout code
@@ -47,54 +49,18 @@ jobs:
           echo "EOF" >> $GITHUB_OUTPUT
           exit $EXIT_CODE
 
-  # ============================================================
-  # Test Job - Runs first, blocks everything if tests fail
-  # ============================================================
-  test:
-    name: Run Tests
-    runs-on: ubuntu-latest
-
-    outputs:
-      status: ${{ steps.test.outcome }}
-      output: ${{ steps.test.outputs.test_output }}
-
-    services:
-      mongodb:
-        image: mongo:7
-        ports:
-          - 27018:27017
-        options: >-
-          --health-cmd "mongosh --eval 'db.runCommand(\"ping\").ok'"
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{ env.NODE_VERSION }}
-          cache: 'npm'
-
-      - name: Install dependencies
-        run: npm ci
-
       - name: Run tests
         id: test
         continue-on-error: true
         run: |
           set +e
-          OUTPUT=$(npm test -- --runInBand 2>&1)
+          OUTPUT=$(npm test 2>&1)
           EXIT_CODE=$?
           echo "test_output<<EOF" >> $GITHUB_OUTPUT
           echo "$OUTPUT" >> $GITHUB_OUTPUT
           echo "EOF" >> $GITHUB_OUTPUT
           exit $EXIT_CODE
         env:
-          MONGO_URI: mongodb://localhost:27018
           JWT_SECRET: test-jwt-secret-for-ci
           NODE_ENV: test
 
@@ -104,16 +70,16 @@ jobs:
   notify:
     name: Send Webhook Notification
     runs-on: ubuntu-latest
-    needs: [lint, test]
+    needs: [ci]
     if: always()
 
     steps:
       - name: Send results to n8n webhook
         env:
-          LINT_STATUS: ${{ needs.lint.result }}
-          TEST_STATUS: ${{ needs.test.result }}
-          RAW_LINT_OUTPUT: ${{ needs.lint.outputs.output }}
-          RAW_TEST_OUTPUT: ${{ needs.test.outputs.output }}
+          LINT_STATUS: ${{ needs.ci.outputs.lint_status }}
+          TEST_STATUS: ${{ needs.ci.outputs.test_status }}
+          RAW_LINT_OUTPUT: ${{ needs.ci.outputs.lint_output }}
+          RAW_TEST_OUTPUT: ${{ needs.ci.outputs.test_output }}
           GH_REPO: ${{ github.repository }}
           GH_BRANCH: ${{ github.head_ref || github.ref_name }}
           GH_SHA: ${{ github.sha }}
@@ -191,11 +157,11 @@ jobs:
             --fail --silent --show-error
 
       - name: Fail if lint or tests failed
-        if: needs.lint.result != 'success' || needs.test.result != 'success'
+        if: needs.ci.outputs.lint_status != 'success' || needs.ci.outputs.test_status != 'success'
         run: |
           echo "❌ Pipeline failed:"
-          echo "   Lint: ${{ needs.lint.result }}"
-          echo "   Test: ${{ needs.test.result }}"
+          echo "   Lint: ${{ needs.ci.outputs.lint_status }}"
+          echo "   Test: ${{ needs.ci.outputs.test_status }}"
           exit 1
 
   # ============================================================
@@ -228,7 +194,7 @@ jobs:
   build:
     name: Build & Push Image
     runs-on: ubuntu-latest
-    needs: [lint, test, scan-deps, notify]
+    needs: [ci, scan-deps, notify]
     if: github.ref == 'refs/heads/main' && github.event_name != 'pull_request'
 
     outputs: