diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..77ba316
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,99 @@
+name: CI
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.12']
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -e .[test]
+        # Install frontend dependencies for potential frontend tests (optional)
+        cd frontend && npm ci && cd ..
+
+    # 统一配置生成，用于后端测试（与前端构建共享相同配置）
+    - name: Create config.yml for CI
+      run: |
+        cat > config.yml << 'EOF'
+        backend_port: 3000
+        frontend_port: 4000
+        max_iterations: 5
+        sub_agent:
+          max_iterations: 3
+          max_tokens: 4096
+          max_agents: 5
+          max_concurrency: 3
+        models:
+          - id: dummy
+            name: Dummy
+            api_url: https://api.example.com
+            api_key: dummy-key
+        default_model: dummy
+        db_type: sqlite
+        db_sqlite_file: ":memory:"
+        workspace_root: ./workspaces
+        EOF
+
+    - name: Run tests with pytest
+      run: |
+        python -m pytest tests/ -v
+
+    - name: Upload coverage to Codecov (optional)
+      uses: codecov/codecov-action@v3
+      if: matrix.python-version == '3.10' && github.event_name == 'push'
+      with:
+        file: ./coverage.xml
+        fail_ci_if_error: false
+  build-frontend:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+    - name: Install frontend dependencies
+      run: |
+        cd frontend && npm ci
+    # 统一配置生成，用于前端构建（与后端测试共享相同配置）
+    - name: Create config.yml for frontend build
+      run: |
+        cat > config.yml << 'EOF'
+        backend_port: 3000
+        frontend_port: 4000
+        max_iterations: 5
+        sub_agent:
+          max_iterations: 3
+          max_tokens: 4096
+          max_agents: 5
+          max_concurrency: 3
+        models:
+          - id: dummy
+            name: Dummy
+            api_url: https://api.example.com
+            api_key: dummy-key
+        default_model: dummy
+        db_type: sqlite
+        db_sqlite_file: ":memory:"
+        workspace_root: ./workspaces
+        EOF
+    - name: Build frontend
+      run: |
+        cd frontend && npm run build
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index fcd3615..ca493b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,4 +27,7 @@
 !frontend/src/**/*.vue
 !frontend/src/**/*.css
 !frontend/public/
-!frontend/public/**
\ No newline at end of file
+!frontend/public/**
+
+# CI / CD
+!.github/workflows/*
diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index 4483a15..77cb2d4 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -8,17 +8,25 @@ import { dirname, resolve } from 'path'
 const __filename = fileURLToPath(import.meta.url)
 const __dirname = dirname(__filename)
 
-const config = yaml.load(
-  fs.readFileSync(resolve(__dirname, '..', 'config.yml'), 'utf-8')
-)
+const configPath = resolve(__dirname, '..', 'config.yml');
+let config = {};
+try {
+  config = yaml.load(fs.readFileSync(configPath, 'utf-8'));
+} catch (e) {
+  console.warn(`Config file not found at ${configPath}, using defaults.`);
+  config = {};
+}
+
+const frontend_port = process.env.VITE_FRONTEND_PORT || config.frontend_port || 4000;
+const backend_port = process.env.VITE_BACKEND_PORT || config.backend_port || 3000;
 
 export default defineConfig({
   plugins: [vue()],
   server: {
-    port: config.frontend_port,
+    port: frontend_port,
     proxy: {
       '/api': {
-        target: `http://localhost:${config.backend_port}`,
+        target: `http://localhost:${backend_port}`,
         changeOrigin: true,
       },
     },