fix: refactor handle_sse to standard ASGI to avoid Starlette TypeError

src/monarch_mcp_custom/server.py

@@ -183,8 +183,8 @@ def create_app():
     # Stream endpoint at /mcp, messages at /mcp/messages
     sse = SseServerTransport("/mcp/messages")
 
-    async def handle_sse(request):
-        async with sse.connect_sse(request.scope, request.receive, request._send) as (
+    async def handle_sse(scope, receive, send):
+        async with sse.connect_sse(scope, receive, send) as (
             read_stream,
             write_stream,
         ):
@@ -196,7 +196,7 @@ def create_app():
 
     routes = [
         Route("/health", health_check, methods=["GET"]),
-        Route("/mcp", endpoint=handle_sse, methods=["GET"]),
+        Route("/mcp", endpoint=handle_sse),
         Route("/mcp/messages", endpoint=sse.handle_post_message, methods=["POST"]),
     ]