perf(methods): 通过移除不必要的 self 参数优化方法签名

在包括 chat、plugin_system、schedule 和 mais4u 在内的多个模块中，消除冗余的实例引用。此次改动将无需访问实例状态的实用函数转换为静态方法，从而提升了内存效率，并使方法依赖关系更加清晰。

src/plugin_system/core/component_registry.py

@@ -31,6 +31,7 @@ class ComponentRegistry:
 
     def __init__(self):
         # 命名空间式组件名构成法 f"{component_type}.{component_name}"
+        self._plus_command_registry: Dict[str, Type[PlusCommand]] = {}
         self._components: Dict[str, ComponentInfo] = {}
         """组件注册表 命名空间式组件名 -> 组件信息"""
         self._components_by_type: Dict[ComponentType, Dict[str, ComponentInfo]] = {types: {} for types in ComponentType}
@@ -618,7 +619,7 @@ class ComponentRegistry:
     def get_plus_command_registry(self) -> Dict[str, Type[PlusCommand]]:
         """获取PlusCommand注册表"""
         if not hasattr(self, "_plus_command_registry"):
-            self._plus_command_registry: Dict[str, Type[PlusCommand]] = {}
+            pass
         return self._plus_command_registry.copy()
 
     def get_registered_plus_command_info(self, command_name: str) -> Optional[PlusCommandInfo]:
@@ -667,7 +668,8 @@ class ComponentRegistry:
         plugin_info = self.get_plugin_info(plugin_name)
         return plugin_info.components if plugin_info else []
 
-    def get_plugin_config(self, plugin_name: str) -> dict:
+    @staticmethod
+    def get_plugin_config(plugin_name: str) -> dict:
         """获取插件配置
 
         Args:

src/plugin_system/core/event_manager.py

@@ -7,6 +7,7 @@ from typing import Dict, Type, List, Optional, Any, Union
 from threading import Lock
 
 from src.common.logger import get_logger
+from src.plugin_system import BaseEventHandler
 from src.plugin_system.base.base_event import BaseEvent, HandlerResultsCollection
 from src.plugin_system.base.base_events_handler import BaseEventHandler
 from src.plugin_system.base.component_types import EventType
@@ -198,7 +199,7 @@ class EventManager:
         """
         return self._event_handlers.get(handler_name)
 
-    def get_all_event_handlers(self) -> Dict[str, BaseEventHandler]:
+    def get_all_event_handlers(self) -> dict[str, type[BaseEventHandler]]:
         """获取所有已注册的事件处理器
 
         Returns:

src/plugin_system/core/plugin_hot_reload.py

@@ -290,7 +290,8 @@ class PluginHotReloadManager:
             logger.error(f"❌ 重载插件 {plugin_name} 时发生错误: {e}", exc_info=True)
             return False
 
-    def _resolve_plugin_name(self, folder_name: str) -> str:
+    @staticmethod
+    def _resolve_plugin_name(folder_name: str) -> str:
         """
         将文件夹名称解析为实际的插件名称
         通过检查插件管理器中的路径映射来找到对应的插件名
@@ -349,7 +350,8 @@ class PluginHotReloadManager:
             # 出错时尝试简单重载
             return self._reload_plugin(plugin_name)
 
-    def _force_clear_plugin_modules(self, plugin_name: str):
+    @staticmethod
+    def _force_clear_plugin_modules(plugin_name: str):
         """强制清理插件相关的模块缓存"""
 
         # 找到所有相关的模块名
@@ -366,7 +368,8 @@ class PluginHotReloadManager:
                 logger.debug(f"🗑️ 清理模块缓存: {module_name}")
                 del sys.modules[module_name]
 
-    def _force_reimport_plugin(self, plugin_name: str):
+    @staticmethod
+    def _force_reimport_plugin(plugin_name: str):
         """强制重新导入插件（委托给插件管理器）"""
         try:
             # 使用插件管理器的重载功能
@@ -377,7 +380,8 @@ class PluginHotReloadManager:
             logger.error(f"❌ 强制重新导入插件 {plugin_name} 时发生错误: {e}", exc_info=True)
             return False
 
-    def _unload_plugin(self, plugin_name: str):
+    @staticmethod
+    def _unload_plugin(plugin_name: str):
         """卸载指定插件"""
         try:
             logger.info(f"🗑️ 开始卸载插件: {plugin_name}")
@@ -490,7 +494,8 @@ class PluginHotReloadManager:
             "debounce_delay": self.file_handlers[0].debounce_delay if self.file_handlers else 0,
         }
 
-    def clear_all_caches(self):
+    @staticmethod
+    def clear_all_caches():
         """清理所有Python模块缓存"""
         try:
             logger.info("🧹 开始清理所有Python模块缓存...")

src/plugin_system/core/plugin_manager.py

@@ -67,7 +67,8 @@ class PluginManager:
         except Exception as e:
             logger.error(f"同步插件 '{plugin_name}' 配置时发生未知错误: {e}")
 
-    def _copy_default_config_to_central(self, plugin_name: str, plugin_config_file: Path, central_config_dir: Path):
+    @staticmethod
+    def _copy_default_config_to_central(plugin_name: str, plugin_config_file: Path, central_config_dir: Path):
         """
         如果中央配置不存在，则将插件的默认 config.toml 复制到中央目录。
         """
@@ -96,7 +97,8 @@ class PluginManager:
                 shutil.copy2(central_file, target_plugin_file)
                 logger.info(f"已将中央配置 '{central_file.name}' 同步到插件 '{plugin_name}'")
 
-    def _is_file_content_identical(self, file1: Path, file2: Path) -> bool:
+    @staticmethod
+    def _is_file_content_identical(file1: Path, file2: Path) -> bool:
         """
         通过比较 MD5 哈希值检查两个文件的内容是否相同。
         """
@@ -403,7 +405,8 @@ class PluginManager:
 
     # == 兼容性检查 ==
 
-    def _check_plugin_version_compatibility(self, plugin_name: str, manifest_data: Dict[str, Any]) -> Tuple[bool, str]:
+    @staticmethod
+    def _check_plugin_version_compatibility(plugin_name: str, manifest_data: Dict[str, Any]) -> Tuple[bool, str]:
         """检查插件版本兼容性
 
         Args:
@@ -557,7 +560,8 @@ class PluginManager:
         else:
             logger.warning("😕 没有成功加载任何插件")
 
-    def _show_plugin_components(self, plugin_name: str) -> None:
+    @staticmethod
+    def _show_plugin_components(plugin_name: str) -> None:
         if plugin_info := component_registry.get_plugin_info(plugin_name):
             component_types = {}
             for comp in plugin_info.components:
@@ -673,7 +677,8 @@ class PluginManager:
         """
         return self.reload_plugin(plugin_name)
 
-    def clear_all_plugin_caches(self):
+    @staticmethod
+    def clear_all_plugin_caches():
         """清理所有插件相关的模块缓存（简化版）"""
         try:
             logger.info("🧹 清理模块缓存...")