feat: add e2e api-test job to CI

.gitea/workflows/ci.yml

@@ -28,3 +28,44 @@ jobs:
 
       - name: Test
         run: bun run test
+
+  e2e:
+    runs-on: ubuntu-latest
+    needs: ci
+
+    services:
+      postgres:
+        image: postgres:16
+        env:
+          POSTGRES_USER: lunarfront
+          POSTGRES_PASSWORD: lunarfront
+          POSTGRES_DB: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 5s
+          --health-timeout 3s
+          --health-retries 5
+
+      valkey:
+        image: valkey/valkey:8
+        options: >-
+          --health-cmd "valkey-cli ping"
+          --health-interval 5s
+          --health-timeout 3s
+          --health-retries 5
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Bun
+        run: |
+          curl -fsSL https://bun.sh/install | bash
+          echo "$HOME/.bun/bin" >> $GITHUB_PATH
+
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+
+      - name: Run API tests
+        working-directory: packages/backend
+        run: bun run api-test