feat: integrate Sentry for global error monitoring

.github/workflows/backend-ci.yml

@@ -14,90 +14,55 @@ on:
       - ".github/workflows/backend-ci.yml"
 
 jobs:
-  test:
-    name: Test Backend
+  ci:
+    name: Lint · TypeCheck · Test · Build
     runs-on: ubuntu-latest
-    timeout-minutes: 10
+    timeout-minutes: 5
 
-    strategy:
-      matrix:
-        node-version: [18.x, 20.x]
+    env:
+      NODE_ENV: test
+      # SENTRY_DSN intentionally absent — every step must pass without it
+      SENTRY_DSN: ""
 
     steps:
-      - name: Checkout code
+      - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup Node.js ${{ matrix.node-version }}
+      - name: Setup Node.js 20
         uses: actions/setup-node@v4
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: "20.x"
           cache: "npm"
           cache-dependency-path: backend/package-lock.json
 
       - name: Install dependencies
         working-directory: ./backend
         run: npm ci
 
-      - name: Run linter
+      - name: Lint
         working-directory: ./backend
         run: npm run lint:check
 
-      - name: Check formatting
+      - name: Format check
         working-directory: ./backend
         run: npm run format:check
 
-      - name: Run tests
+      - name: TypeScript check — blocks PR on type errors
+        working-directory: ./backend
+        run: npx tsc --noEmit
+
+      - name: Unit tests
         working-directory: ./backend
         run: npm run test:ci
 
-      - name: Upload coverage reports
-        if: matrix.node-version == '20.x'
+      - name: Build
+        working-directory: ./backend
+        run: npm run build
+
+      - name: Upload coverage
         uses: codecov/codecov-action@v4
         with:
           directory: ./backend/coverage
           flags: backend
           fail_ci_if_error: false
           token: ${{ secrets.CODECOV_TOKEN }}
-
-  build:
-    name: Build Backend
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: "20.x"
-          cache: "npm"
-          cache-dependency-path: backend/package-lock.json
-
-      - name: Install dependencies
-        working-directory: ./backend
-        run: npm ci
-
-      - name: Build project
-        working-directory: ./backend
-        run: npm run build
-
-      - name: Check for TypeScript errors
-        working-directory: ./backend
-        run: npx tsc --noEmit
-
-  status-check:
-    name: CI Status Check
-    runs-on: ubuntu-latest
-    needs: [test, build]
-    if: always()
-
-    steps:
-      - name: Check if all jobs passed
-        run: |
-          if [[ "${{ needs.test.result }}" == "failure" || "${{ needs.build.result }}" == "failure" ]]; then
-            echo "❌ CI checks failed"
-            exit 1
-          fi
-          echo "✅ All CI checks passed"

backend/.eslintrc.js

@@ -1,7 +1,7 @@
 module.exports = {
   parser: "@typescript-eslint/parser",
   parserOptions: {
-    project: "tsconfig.json",
+    project: "tsconfig.eslint.json",
     tsconfigRootDir: __dirname,
     sourceType: "module",
   },