feat(安全): 实现应用黑名单检测功能

添加新的AppSecurity插件用于获取已安装应用列表
创建后端API端点获取应用黑名单
在前端添加应用拦截界面和逻辑
使用在线黑名单检测机制

backend/server.js

@@ -1102,6 +1102,18 @@ const geofence = polygon([
     }
   })
 
+  // Get App Blacklist Endpoint
+  app.get('/api/security/app-blacklist', authenticateJWT, async (req, res) => {
+    try {
+      const [rows] = await db.execute('SELECT package_name FROM app_blacklist');
+      const packageNames = rows.map(row => row.package_name);
+      res.json(packageNames);
+    } catch (error) {
+      console.error('Get app blacklist error:', error);
+      res.status(500).json({ message: 'Database error fetching app blacklist.' });
+    }
+  });
+
   // --- Server Start ---
   const httpPort = process.env.HTTP_PORT || 3000
   const httpsPort = process.env.HTTPS_PORT || 3443