feat: Implement LiveCode module with WebSocket and SSE support

- Added config management using `useConfig` for environment variables.
- Created `LiveCode` class to manage WebSocket connections and routing.
- Implemented `SSEManager` for Server-Sent Events handling.
- Developed `WSSManager` for managing WebSocket connections with heartbeat functionality.
- Introduced `ReconnectingWebSocket` class for robust WebSocket client with automatic reconnection.
- Added test files for live application demonstrating WebSocket and TCP server integration.

assistant/src/routes/index.ts

@@ -5,8 +5,6 @@ import './ai/index.ts';
 import './user/index.ts';
 import './call/index.ts'
 
-// TODO: 移除
-// import './hot-api/key-sender/index.ts';
 import './opencode/index.ts';
 import './remote/index.ts';
 import './kevisual/index.ts'