try coverage

.github/workflows/backend.yaml

@@ -24,3 +24,10 @@ jobs:
       run: pnpm check
     - name: 'Test'
       run: pnpm vitest --watch=false
+    - name: 'Coverage'
+      run: pnpm vitest --coverage.enabled true
+    - name: "Upload Coverage"
+      uses: actions/upload-artifact@v4
+      with:
+        name: coverage
+        path: ./backend/coverage

.github/workflows/report-coverage.yaml

@@ -0,0 +1,23 @@
+name: Report Coverage
+
+on:
+  workflow_run:
+    workflows: ["Backend"]
+    types:
+      - completed
+
+jobs:
+  report:
+    runs-on: ubuntu-latest
+
+    permissions:
+      pull-requests: write
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/download-artifact@v4
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          run-id: ${{ github.event.workflow_run.id }}
+      - name: "Report Coverage"
+        uses: davelosert/vitest-coverage-report-action@v2

backend/biome.json

@@ -7,7 +7,8 @@
     "enabled": true,
     "rules": {
       "recommended": true
-    }
+    },
+    "ignore": ["./coverage"]
   },
   "formatter": {
     "enabled": true,

backend/package.json

@@ -8,11 +8,13 @@
     "drizzle:generate": "drizzle-kit generate:pg",
     "check": "biome check .",
     "fix": "biome check --apply .",
-    "test": "vitest"
+    "test": "vitest",
+    "coverage": "vitest run --coverage"
   },
   "devDependencies": {
     "@biomejs/biome": "1.6.4",
     "@testcontainers/postgresql": "^10.8.1",
+    "@vitest/coverage-istanbul": "^1.4.0",
     "drizzle-kit": "^0.20.14",
     "testcontainers": "^10.8.1",
     "tsx": "^4.7.2",