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/core/component_singletons.py

@@ -1,81 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-组件单例管理器
-避免重复初始化各种组件
-"""
-
-import threading
-from typing import Optional
-
-class ComponentSingletons:
-    """组件单例管理器"""
-    
-    _instance = None
-    _lock = threading.Lock()
-    
-    def __new__(cls):
-        if cls._instance is None:
-            with cls._lock:
-                if cls._instance is None:
-                    cls._instance = super().__new__(cls)
-                    cls._instance._initialized = False
-        return cls._instance
-    
-    def __init__(self):
-        if self._initialized:
-            return
-        
-        self._llm_client = None
-        self._analytics_manager = None
-        self._alert_system = None
-        self._vehicle_manager = None
-        self._chat_manager = None
-        self._initialized = True
-    
-    def get_llm_client(self):
-        """获取LLM客户端（懒加载）"""
-        if self._llm_client is None:
-            with self._lock:
-                if self._llm_client is None:
-                    from ..core.llm_client import QwenClient
-                    self._llm_client = QwenClient()
-        return self._llm_client
-    
-    def get_analytics_manager(self):
-        """获取分析管理器（懒加载）"""
-        if self._analytics_manager is None:
-            with self._lock:
-                if self._analytics_manager is None:
-                    from ..analytics.analytics_manager import AnalyticsManager
-                    self._analytics_manager = AnalyticsManager()
-        return self._analytics_manager
-    
-    def get_alert_system(self):
-        """获取预警系统（懒加载）"""
-        if self._alert_system is None:
-            with self._lock:
-                if self._alert_system is None:
-                    from ..analytics.alert_system import AlertSystem
-                    self._alert_system = AlertSystem()
-        return self._alert_system
-    
-    def get_vehicle_manager(self):
-        """获取车辆数据管理器（懒加载）"""
-        if self._vehicle_manager is None:
-            with self._lock:
-                if self._vehicle_manager is None:
-                    from ..vehicle.vehicle_data_manager import VehicleDataManager
-                    self._vehicle_manager = VehicleDataManager()
-        return self._vehicle_manager
-    
-    def get_chat_manager(self):
-        """获取聊天管理器（懒加载）"""
-        if self._chat_manager is None:
-            with self._lock:
-                if self._chat_manager is None:
-                    from ..dialogue.realtime_chat import RealtimeChatManager
-                    self._chat_manager = RealtimeChatManager()
-        return self._chat_manager
-
-# 全局单例实例
-component_singletons = ComponentSingletons()