chore(langchain): fix some no-return-any mypy violations

Author: cbornet

libs/langchain_v1/langchain/agents/factory.py

@@ -308,7 +308,7 @@ def _resolve_schema(schemas: set[type], schema_name: str, omit_flag: str | None
             if not should_omit:
                 all_annotations[field_name] = field_type
 
-    return TypedDict(schema_name, all_annotations)  # type: ignore[operator]
+    return cast("type", TypedDict(schema_name, all_annotations))  # type: ignore[operator]
 
 
 def _extract_metadata(type_: type) -> list:
@@ -347,7 +347,7 @@ def _get_can_jump_to(middleware: AgentMiddleware[Any, Any], hook_name: str) -> l
         and sync_method is not base_sync_method
         and hasattr(sync_method, "__can_jump_to__")
     ):
-        return sync_method.__can_jump_to__
+        return cast("list[JumpTo]", sync_method.__can_jump_to__)
 
     # Try async method - only if it's overridden from base class
     async_method = getattr(middleware.__class__, f"a{hook_name}", None)
@@ -356,7 +356,7 @@ def _get_can_jump_to(middleware: AgentMiddleware[Any, Any], hook_name: str) -> l
         and async_method is not base_async_method
         and hasattr(async_method, "__can_jump_to__")
     ):
-        return async_method.__can_jump_to__
+        return cast("list[JumpTo]", async_method.__can_jump_to__)
 
     return []
 

libs/langchain_v1/langchain/agents/middleware/shell_tool.py

@@ -605,7 +605,7 @@ def _run_shell_tool(
         payload: dict[str, Any],
         *,
         tool_call_id: str | None,
-    ) -> Any:
+    ) -> ToolMessage | str:
         session = resources.session
 
         if payload.get("restart"):