chore: add D212 lint rule to enforce Google-style docstrings (#1892)

src/mcp/server/lowlevel/experimental.py

@@ -88,8 +88,7 @@ class ExperimentalHandlers:
         store: TaskStore | None = None,
         queue: TaskMessageQueue | None = None,
     ) -> TaskSupport:
-        """
-        Enable experimental task support.
+        """Enable experimental task support.
 
         This sets up the task infrastructure and auto-registers default handlers
         for tasks/get, tasks/result, tasks/list, and tasks/cancel.

src/mcp/server/lowlevel/func_inspection.py

@@ -7,8 +7,7 @@ R = TypeVar("R")
 
 
 def create_call_wrapper(func: Callable[..., R], request_type: type[T]) -> Callable[[T], R]:
-    """
-    Create a wrapper function that knows how to call func with the request object.
+    """Create a wrapper function that knows how to call func with the request object.
 
     Returns a wrapper function that takes the request and calls func appropriately.
 

src/mcp/server/lowlevel/server.py

@@ -1,5 +1,4 @@
-"""
-MCP Server Module
+"""MCP Server Module
 
 This module provides a framework for creating an MCP (Model Context Protocol) server.
 It allows you to easily define and handle various types of requests and notifications