调试后整体可以使用的版本。

project.py

@@ -587,7 +587,7 @@ class ProjectBuilder:
         pass
     
     @classmethod
-    def register(toolkit_class: type, config: dict):
+    def register(cls, toolkit_class: type, config: dict):
         """
         注册工具类到工厂
         
@@ -597,10 +597,11 @@ class ProjectBuilder:
         if not issubclass(toolkit_class, ProjectToolkit):
             raise TypeError(f"{toolkit_class.__name__} 必须继承自 ProjectToolkit")
         
-        _config = config
-        _registry = toolkit_class
+        cls._config = config
+        cls._registry = toolkit_class
     
-    def build(self) -> ProjectToolkit:
+    @classmethod
+    def build(cls) -> ProjectToolkit:
         """
         创建工具实例
         
@@ -609,7 +610,7 @@ class ProjectBuilder:
         返回:
             实例化的工具对象
         """
-        if _registry is None:
+        if cls._registry is None:
             raise KeyError(f"未注册的类，请先注册类")
 
-        return _registry(_config)
+        return cls._registry(cls._config)