Use built-in TypedDict from typing module

Python 3.10+ includes TypedDict in the standard library.
Removed typing-extensions dependency as it's unnecessary.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

mcp_server/pyproject.toml

@@ -10,7 +10,6 @@ dependencies = [
     "graphiti-core[falkordb]>=0.23.0",
     "pydantic-settings>=2.0.0",
     "pyyaml>=6.0",
-    "typing-extensions>=4.0.0",
 ]
 
 [project.optional-dependencies]

mcp_server/src/models/response_types.py

@@ -1,8 +1,6 @@
 """Response type definitions for Graphiti MCP Server."""
 
-from typing import Any
-
-from typing_extensions import TypedDict
+from typing import Any, TypedDict
 
 
 class ErrorResponse(TypedDict):