Refactor SSE and Home Assistant Integration with Enhanced Configuration

- Simplified SSE statistics retrieval in routes
- Extended Home Assistant configuration with additional connection parameters
- Implemented comprehensive Home Assistant instance methods for services, states, and events
- Cleaned up and type-refined Home Assistant interfaces
- Improved WebSocket event handling and type conversion

src/interfaces/hass.ts

@@ -77,7 +77,4 @@ export interface HassEvent {
         parent_id?: string;
         user_id?: string;
     };
-}
-
-// Re-export entity types from index.ts
-export { HassEntity, HassState } from './index.js'; 
+}