task-216: CI 接入测试阶段（.gitea/workflows/build.yml 追加 mvn test 契约+ArchUnit 阶段先于打包、新增 frontend-test job 跑 vue-tsc+npm test，失败即红/超时/双容器）+ 8 条测试

.gitea/workflows/build.yml

@@ -14,13 +14,35 @@ jobs:
   build:
     runs-on: ubuntu-latest
     container: maven:3.9-eclipse-temurin-21
+    timeout-minutes: 30
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Build with Maven
+      - name: Test (Java: unit + contract + ArchUnit)
+        working-directory: backend-java
+        run: mvn test -q
+      - name: Package
+        working-directory: backend-java
         run: mvn clean package -DskipTests -q
       - name: Upload artifact
         uses: actions/upload-artifact@v4
         with:
           name: backend-jar
-          path: target/*.jar
+          path: backend-java/target/*.jar
+
+  frontend-test:
+    runs-on: ubuntu-latest
+    container: node:24-alpine
+    timeout-minutes: 15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install dependencies
+        working-directory: frontend-vue
+        run: npm ci
+      - name: Type check (vue-tsc)
+        working-directory: frontend-vue
+        run: npm run build
+      - name: Frontend contract tests (node --test)
+        working-directory: frontend-vue
+        run: node --test tests/*.test.ts