feat: 重构项目心跳数据结构并实现项目列表API

- 新增统一项目列表Redis键和迁移工具
- 实现GET /api/projects端点获取项目列表
- 实现POST /api/projects/migrate端点支持数据迁移
- 更新前端ProjectSelector组件使用真实项目数据
- 扩展projectStore状态管理
- 更新相关文档和OpenSpec规范
- 添加测试用例验证新功能

openspec/changes/update-command-control-api/tasks.md

@@ -0,0 +1,27 @@
+## 1. OpenSpec
+
+- [ ] 1.1 Add command spec delta for HTTP control (remove Redis control queue)
+- [ ] 1.2 Add design notes for baseUrl mapping + request format
+- [ ] 1.3 Run `openspec validate update-command-control-api --strict`
+
+## 2. Backend
+
+- [ ] 2.1 Add Redis heartbeat parsing (apiBaseUrl + lastActiveAt) and offline detection (10s)
+- [ ] 2.2 Update POST `/api/commands` to parse `apiName` + args and call target HTTP API using heartbeat apiBaseUrl
+- [ ] 2.3 Return structured result to frontend (success/failed + upstream status/body)
+
+## 3. Frontend
+
+- [ ] 3.1 Update Console send behavior + UI copy to reflect API control
+- [ ] 3.2 Validate input format (needs at least apiName)
+
+## 4. Docs
+
+- [ ] 4.1 Update docs/redis-integration-protocol.md: remove control queue; add HTTP control API section
+- [ ] 4.2 Update .env.example with new optional variables (timeouts/offline threshold)
+
+## 5. Verify
+
+- [ ] 5.1 Run `npm run lint`
+- [ ] 5.2 Run `npm run build`
+- [ ] 5.3 Smoke test backend endpoints