refactor(WebSocket): migrate from SSE to WebSocket for real-time messaging

- Replaced SSEClient with WSClient for handling real-time messaging.
- Updated ProcessMessageUseCase to initialize WebSocket listeners.
- Refactored messageService to prioritize WebSocket for sending messages, with fallback to HTTP.
- Removed sseService and adjusted imports across the application to utilize wsService.
- Enhanced message handling and connection management for improved performance and reliability.

src/services/api.ts

@@ -20,7 +20,7 @@ const getBaseUrl = () => {
 };
 
 const BASE_URL = getBaseUrl();
-const SSE_URL = `${BASE_URL.replace(/\/+$/, '')}/realtime/sse`;
+const WS_URL = `${BASE_URL.replace(/^https?:\/\//, 'wss://').replace(/\/api\/v1$/, '/api/v1')}/realtime/ws`;
 
 // Token 存储键
 const TOKEN_KEY = 'auth_token';
@@ -441,4 +441,4 @@ class ApiClient {
 // 导出 API 客户端实例
 export const api = new ApiClient(BASE_URL);
 
-export { SSE_URL, TOKEN_KEY, REFRESH_TOKEN_KEY };
+export { WS_URL, TOKEN_KEY, REFRESH_TOKEN_KEY };