feat(sleep): 为睡眠系统添加随机时间偏移功能

- 新增每日睡眠和起床时间随机偏移量配置选项
- 实现缓存机制确保同一天内使用相同的偏移量
- 重构睡眠时间检查逻辑以支持动态时间偏移
- 更新相关配置类和插件清单格式

src/chat/chat_loop/sleep_manager/time_checker.py

@@ -1,5 +1,6 @@
-from datetime import datetime, time
+from datetime import datetime, time, timedelta
 from typing import Optional
+import random
 
 from src.common.logger import get_logger
 from src.config.config import global_config
@@ -10,15 +11,37 @@ logger = get_logger("time_checker")
 class TimeChecker:
     def __init__(self, schedule_source):
         self.schedule_source = schedule_source
+        # 缓存当天的偏移量，确保一天内使用相同的偏移量
+        self._daily_sleep_offset = None
+        self._daily_wake_offset = None
+        self._offset_date = None
+    
+    def _get_daily_offsets(self):
+        """获取当天的睡眠和起床时间偏移量，每天生成一次"""
+        today = datetime.now().date()
+        
+        # 如果是新的一天，重新生成偏移量
+        if self._offset_date != today:
+            sleep_offset_range = global_config.sleep_system.sleep_time_offset_minutes
+            wake_offset_range = global_config.sleep_system.wake_up_time_offset_minutes
+            
+            # 生成 ±offset_range 范围内的随机偏移量
+            self._daily_sleep_offset = random.randint(-sleep_offset_range, sleep_offset_range)
+            self._daily_wake_offset = random.randint(-wake_offset_range, wake_offset_range)
+            self._offset_date = today
+            
+            logger.debug(f"生成新的每日偏移量 - 睡觉时间偏移: {self._daily_sleep_offset}分钟, 起床时间偏移: {self._daily_wake_offset}分钟")
+        
+        return self._daily_sleep_offset, self._daily_wake_offset
 
     def is_in_theoretical_sleep_time(self, now_time: time) -> tuple[bool, Optional[str]]:
         if global_config.sleep_system.sleep_by_schedule:
             if self.schedule_source.get_today_schedule():
                 return self._is_in_schedule_sleep_time(now_time)
             else:
-                return self._is_in_fixed_sleep_time(now_time)
+                return self._is_in_sleep_time(now_time)
         else:
-            return self._is_in_fixed_sleep_time(now_time)
+            return self._is_in_sleep_time(now_time)
 
     def _is_in_schedule_sleep_time(self, now_time: time) -> tuple[bool, Optional[str]]:
         """检查当前时间是否落在日程表的任何一个睡眠活动中"""
@@ -49,20 +72,33 @@ class TimeChecker:
                     continue
         return False, None
 
-    def _is_in_fixed_sleep_time(self, now_time: time) -> tuple[bool, Optional[str]]:
-        """检查当前时间是否在固定的睡眠时间内"""
+    def _is_in_sleep_time(self, now_time: time) -> tuple[bool, Optional[str]]:
+        """检查当前时间是否在固定的睡眠时间内（应用偏移量）"""
         try:
             start_time_str = global_config.sleep_system.fixed_sleep_time
             end_time_str = global_config.sleep_system.fixed_wake_up_time
-            start_time = datetime.strptime(start_time_str, "%H:%M").time()
-            end_time = datetime.strptime(end_time_str, "%H:%M").time()
+            
+            # 获取当天的偏移量
+            sleep_offset, wake_offset = self._get_daily_offsets()
+            
+            # 解析基础时间
+            base_start_time = datetime.strptime(start_time_str, "%H:%M")
+            base_end_time = datetime.strptime(end_time_str, "%H:%M")
+            
+            # 应用偏移量
+            actual_start_time = (base_start_time + timedelta(minutes=sleep_offset)).time()
+            actual_end_time = (base_end_time + timedelta(minutes=wake_offset)).time()
+            
+            logger.debug(f"固定睡眠时间检查 - 基础时间: {start_time_str}-{end_time_str}, "
+                        f"偏移后时间: {actual_start_time.strftime('%H:%M')}-{actual_end_time.strftime('%H:%M')}, "
+                        f"当前时间: {now_time.strftime('%H:%M')}")
 
-            if start_time <= end_time:
-                if start_time <= now_time < end_time:
-                    return True, "固定睡眠时间"
+            if actual_start_time <= actual_end_time:
+                if actual_start_time <= now_time < actual_end_time:
+                    return True, f"固定睡眠时间(偏移后: {actual_start_time.strftime('%H:%M')}-{actual_end_time.strftime('%H:%M')})"
             else:
-                if now_time >= start_time or now_time < end_time:
-                    return True, "固定睡眠时间"
+                if now_time >= actual_start_time or now_time < actual_end_time:
+                    return True, f"固定睡眠时间(偏移后: {actual_start_time.strftime('%H:%M')}-{actual_end_time.strftime('%H:%M')})"
         except ValueError as e:
             logger.error(f"固定的睡眠时间格式不正确，请使用 HH:MM 格式: {e}")
         return False, None

src/chat/replyer/default_generator.py

@@ -283,6 +283,7 @@ class DefaultReplyer:
                 return False, None, None
             from src.plugin_system.core.event_manager import event_manager
 
+            # 触发 POST_LLM 事件（请求 LLM 之前）
             if not from_plugin:
                 result = await event_manager.trigger_event(
                     EventType.POST_LLM, plugin_name="SYSTEM", prompt=prompt, stream_id=stream_id
@@ -304,6 +305,7 @@ class DefaultReplyer:
                     "model": model_name,
                     "tool_calls": tool_call,
                 }
+                
                 # 触发 AFTER_LLM 事件
                 if not from_plugin:
                     result = await event_manager.trigger_event(