stop using shared dir

lib/mcp/transport.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module MCP
+  class Transport
+    def initialize(server)
+      @server = server
+    end
+
+    def send_response(response)
+      raise NotImplementedError, "Subclasses must implement send_response"
+    end
+
+    def open
+      raise NotImplementedError, "Subclasses must implement open"
+    end
+
+    def close
+      raise NotImplementedError, "Subclasses must implement close"
+    end
+
+    private
+
+    def handle_request(request)
+      response = @server.handle(request)
+      send_response(response) if response
+    end
+
+    def handle_json_request(request)
+      response = @server.handle_json(request)
+      send_response(response) if response
+    end
+  end
+end