clan-app: Fix mypy lints and add GenericFnRuntime

pkgs/clan-cli/clan_cli/api/__init__.py

@@ -50,10 +50,22 @@ def update_wrapper_signature(wrapper: Callable, wrapped: Callable) -> None:
     wrapper.__signature__ = new_sig  # type: ignore
 
 
-class _MethodRegistry:
+class MethodRegistry:
     def __init__(self) -> None:
-        self._orig_annotations: dict[str, Callable[[Any], Any]] = {}
-        self._registry: dict[str, Callable[[Any], Any]] = {}
+        self._orig_annotations: dict[str, dict[str, Any]] = {}
+        self._registry: dict[str, Callable[..., Any]] = {}
+
+    @property
+    def annotations(self) -> dict[str, dict[str, Any]]:
+        return self._orig_annotations
+
+    @property
+    def functions(self) -> dict[str, Callable[..., Any]]:
+        return self._registry
+
+    def reset(self) -> None:
+        self._orig_annotations.clear()
+        self._registry.clear()
 
     def register_abstract(self, fn: Callable[..., T]) -> Callable[..., T]:
         @wraps(fn)
@@ -84,7 +96,6 @@ API.register(open_file)
         return fn
 
     def register(self, fn: Callable[..., T]) -> Callable[..., T]:
-
         if fn.__name__ in self._registry:
             raise ValueError(f"Function {fn.__name__} already registered")
         if fn.__name__ in self._orig_annotations:
@@ -189,4 +200,4 @@ API.register(open_file)
         return None
 
 
-API = _MethodRegistry()
+API = MethodRegistry()