fix: Use inline union type instead of TagType alias in write_note

Pyright doesn't allow type alias variables in function signatures.
Changed tags: TagType to tags: list[str] | str | None to match
the pattern used in build_context.py.

Fixes type checking errors across all platforms.

Signed-off-by: phernandez <paul@basicmachines.co>

Author: phernandez

src/basic_memory/mcp/tools/write_note.py

@@ -28,7 +28,7 @@ async def write_note(
     content: str,
     folder: str,
     project: Optional[str] = None,
-    tags: TagType = None,
+    tags: list[str] | str | None = None,
     entity_type: str = "note",
     context: Context | None = None,
 ) -> str: