fixing auto-generated docs for a few tools (Memory_Manager, File_System, Obsidian Vault)

Modules/_docstrings.py

@@ -1,12 +1,18 @@
 from __future__ import annotations
 
 import inspect
-from typing import Any, Annotated, get_args, get_origin, get_type_hints
+from typing import Any, Annotated, get_args, get_origin, get_type_hints, Union
 
 
 def _typename(tp: Any) -> str:
     """Return a readable type name from a type or annotation."""
     try:
+        # Unwrap Optional[T] -> T
+        if get_origin(tp) is Union:
+            args = [a for a in get_args(tp) if a is not type(None)]
+            if len(args) == 1:
+                return _typename(args[0])
+
         if hasattr(tp, "__name__"):
             return tp.__name__  # e.g. int, str
         if getattr(tp, "__module__", None) and getattr(tp, "__qualname__", None):