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/common/data_models/info_data_model.py

@@ -1,10 +1,10 @@
 from dataclasses import dataclass, field
 from typing import Optional, Dict, List, TYPE_CHECKING
+
 from . import BaseDataModel
 
 if TYPE_CHECKING:
-    from .database_data_model import DatabaseMessages
-    from src.plugin_system.base.component_types import ActionInfo, ChatMode
+    pass
 
 
 @dataclass

src/common/data_models/llm_data_model.py

@@ -2,8 +2,9 @@ from dataclasses import dataclass
 from typing import Optional, List, Tuple, TYPE_CHECKING, Any
 
 from . import BaseDataModel
+
 if TYPE_CHECKING:
-    from src.llm_models.payload_content.tool_option import ToolCall
+    pass
 
 @dataclass
 class LLMGenerationDataModel(BaseDataModel):

src/common/data_models/message_data_model.py

@@ -1,10 +1,10 @@
-from typing import Optional, TYPE_CHECKING
 from dataclasses import dataclass, field
+from typing import Optional, TYPE_CHECKING
 
 from . import BaseDataModel
 
 if TYPE_CHECKING:
-    from .database_data_model import DatabaseMessages
+    pass
 
 
 @dataclass