feat: 网页端Agent切换 + 快捷语句功能

main_v2.py

@@ -567,6 +567,13 @@ async def websocket_endpoint(websocket: WebSocket, user_id: str, db: Session = D
                 message = data.get("message", "")
                 conversation_id = data.get("conversation_id")
                 enable_thinking = data.get("enable_thinking", True)  # 可临时关闭思考
+                agent_id_override = data.get("agent_id")  # 前端可以指定agent
+                
+                # 如果前端指定了agent，使用它
+                if agent_id_override:
+                    agent = agent_service.get_agent(agent_id_override)
+                    if agent and agent.is_active:
+                        current_agent_id = agent_id_override
                 
                 if not message.strip():
                     continue