修复重复初始化问题 - 统一Redis连接管理

主要修复：
1. 创建统一Redis连接管理器 (src/core/redis_manager.py)
   - 单例模式管理所有Redis连接
   - 懒加载连接，避免重复初始化
   - 线程安全的连接管理

2. 更新所有Redis使用模块
   - TokenMonitor: 使用统一Redis管理器
   - AISuccessMonitor: 移除重复Redis连接代码
   - SystemOptimizer: 统一Redis连接管理
   - ConversationHistoryManager: 使用统一Redis管理器

3. 修复DialogueManager重复初始化
   - 使用懒加载属性(@property)避免重复创建监控器
   - 只有在实际使用时才创建实例

4. 优化启动性能
   - 避免重复的Redis连接创建
   - 消除重复的TSP助手初始化
   - 减少启动时的日志输出

技术改进：
- 单例模式Redis管理器
- 懒加载组件初始化
- 统一连接管理
- 线程安全设计

解决启动卡顿问题，提升系统响应速度

src/web/app.py

@@ -84,16 +84,16 @@ def get_chat_manager():
     """获取聊天管理器实例（懒加载）"""
     global chat_manager
     if chat_manager is None:
-        from src.dialogue.realtime_chat import RealtimeChatManager
-        chat_manager = RealtimeChatManager()
+        from src.core.component_singletons import component_singletons
+        chat_manager = component_singletons.get_chat_manager()
     return chat_manager
 
 def get_vehicle_manager():
     """获取车辆数据管理器实例（懒加载）"""
     global vehicle_manager
     if vehicle_manager is None:
-        from src.vehicle.vehicle_data_manager import VehicleDataManager
-        vehicle_manager = VehicleDataManager()
+        from src.core.component_singletons import component_singletons
+        vehicle_manager = component_singletons.get_vehicle_manager()
     return vehicle_manager
 
 # 注册蓝图

src/web/blueprints/alerts.py

@@ -10,10 +10,13 @@ from src.analytics.alert_system import AlertRule, AlertLevel, AlertType
 
 alerts_bp = Blueprint('alerts', __name__, url_prefix='/api/alerts')
 
+# 使用全局单例避免重复创建
+_assistant = None
+
 def get_assistant():
     """获取TSP助手实例（懒加载）"""
     global _assistant
-    if '_assistant' not in globals():
+    if _assistant is None:
         _assistant = TSPAssistant()
     return _assistant
 

src/web/blueprints/knowledge.py

@@ -13,17 +13,21 @@ from src.agent_assistant import TSPAgentAssistant
 
 knowledge_bp = Blueprint('knowledge', __name__, url_prefix='/api/knowledge')
 
+# 使用全局单例避免重复创建
+_assistant = None
+_agent_assistant = None
+
 def get_assistant():
     """获取TSP助手实例（懒加载）"""
     global _assistant
-    if '_assistant' not in globals():
+    if _assistant is None:
         _assistant = TSPAssistant()
     return _assistant
 
 def get_agent_assistant():
     """获取Agent助手实例（懒加载）"""
     global _agent_assistant
-    if '_agent_assistant' not in globals():
+    if _agent_assistant is None:
         _agent_assistant = TSPAgentAssistant()
     return _agent_assistant
 

src/web/blueprints/monitoring.py

@@ -32,10 +32,13 @@ def calculate_conversation_tokens(conversations):
         total_tokens += estimate_tokens(user_message) + estimate_tokens(assistant_response)
     return total_tokens
 
+# 使用全局单例避免重复创建
+_assistant = None
+
 def get_assistant():
     """获取TSP助手实例（懒加载）"""
     global _assistant
-    if '_assistant' not in globals():
+    if _assistant is None:
         _assistant = TSPAssistant()
     return _assistant
 

src/web/blueprints/workorders.py

@@ -18,10 +18,13 @@ from src.core.query_optimizer import query_optimizer
 
 workorders_bp = Blueprint('workorders', __name__, url_prefix='/api/workorders')
 
+# 使用全局单例避免重复创建
+_assistant = None
+
 def get_assistant():
     """获取TSP助手实例（懒加载）"""
     global _assistant
-    if '_assistant' not in globals():
+    if _assistant is None:
         _assistant = TSPAssistant()
     return _assistant
 
@@ -205,7 +208,8 @@ def generate_workorder_ai_suggestion(workorder_id):
             # 组装提示词
             context = "\n".join([f"Q: {k.get('question','')}\nA: {k.get('answer','')}" for k in kb_list])
             from src.core.llm_client import QwenClient
-            llm = QwenClient()
+            from ...core.component_singletons import component_singletons
+            llm = component_singletons.get_llm_client()
             prompt = f"请基于以下工单描述与知识库片段，给出简洁、可执行的处理建议。\n工单描述:\n{w.description}\n\n知识库片段:\n{context}\n\n请直接输出建议文本："
             llm_resp = llm.chat_completion(messages=[{"role":"user","content":prompt}], temperature=0.3, max_tokens=800)
             suggestion = ""

src/web/websocket_server.py

@@ -23,7 +23,9 @@ class WebSocketServer:
     def __init__(self, host: str = "localhost", port: int = 8765):
         self.host = host
         self.port = port
-        self.chat_manager = RealtimeChatManager()
+        # 使用单例避免重复创建
+        from ..core.component_singletons import component_singletons
+        self.chat_manager = component_singletons.get_chat_manager()
         self.connected_clients: Set[WebSocketServerProtocol] = set()
         
     async def register_client(self, websocket: WebSocketServerProtocol):