command简化，修复unregister的bug

src/plugin_system/base/base_command.py

@@ -1,5 +1,5 @@
 from abc import ABC, abstractmethod
-from typing import Dict, Tuple, Optional, List
+from typing import Dict, Tuple, Optional
 from src.common.logger import get_logger
 from src.plugin_system.base.component_types import CommandInfo, ComponentType
 from src.chat.message_receive.message import MessageRecv
@@ -26,9 +26,6 @@ class BaseCommand(ABC):
     # 默认命令设置
     command_pattern: str = r""
     """命令匹配的正则表达式"""
-    command_help: str = ""
-    """命令帮助信息"""
-    command_examples: List[str] = []
 
     def __init__(self, message: MessageRecv, plugin_config: Optional[dict] = None):
         """初始化Command组件
@@ -228,6 +225,4 @@ class BaseCommand(ABC):
             component_type=ComponentType.COMMAND,
             description=cls.command_description,
             command_pattern=cls.command_pattern,
-            command_help=cls.command_help,
-            command_examples=cls.command_examples.copy() if cls.command_examples else [],
         )

src/plugin_system/base/component_types.py

@@ -140,13 +140,9 @@ class CommandInfo(ComponentInfo):
     """命令组件信息"""
 
     command_pattern: str = ""  # 命令匹配模式（正则表达式）
-    command_help: str = ""  # 命令帮助信息
-    command_examples: List[str] = field(default_factory=list)  # 命令使用示例
 
     def __post_init__(self):
         super().__post_init__()
-        if self.command_examples is None:
-            self.command_examples = []
         self.component_type = ComponentType.COMMAND
 
 

src/plugin_system/core/events_manager.py

@@ -182,17 +182,17 @@ class EventsManager:
 
     async def cancel_handler_tasks(self, handler_name: str) -> None:
         tasks_to_be_cancelled = self._handler_tasks.get(handler_name, [])
-        remaining_tasks = [task for task in tasks_to_be_cancelled if not task.done()]
-        for task in remaining_tasks:
-            task.cancel()
-        try:
-            await asyncio.wait_for(asyncio.gather(*remaining_tasks, return_exceptions=True), timeout=5)
-            logger.info(f"已取消事件处理器 {handler_name} 的所有任务")
-        except asyncio.TimeoutError:
-            logger.warning(f"取消事件处理器 {handler_name} 的任务超时，开始强制取消")
-        except Exception as e:
-            logger.error(f"取消事件处理器 {handler_name} 的任务时发生异常: {e}")
-        finally:
+        if remaining_tasks := [task for task in tasks_to_be_cancelled if not task.done()]:
+            for task in remaining_tasks:
+                task.cancel()
+            try:
+                await asyncio.wait_for(asyncio.gather(*remaining_tasks, return_exceptions=True), timeout=5)
+                logger.info(f"已取消事件处理器 {handler_name} 的所有任务")
+            except asyncio.TimeoutError:
+                logger.warning(f"取消事件处理器 {handler_name} 的任务超时，开始强制取消")
+            except Exception as e:
+                logger.error(f"取消事件处理器 {handler_name} 的任务时发生异常: {e}")
+        if handler_name in self._handler_tasks:
             del self._handler_tasks[handler_name]
 
     async def unregister_event_subscriber(self, handler_name: str) -> bool: