stop using shared dir

lib/mcp/prompt/result.rb

@@ -0,0 +1,19 @@
+# typed: strict
+# frozen_string_literal: true
+
+module MCP
+  class Prompt
+    class Result
+      attr_reader :description, :messages
+
+      def initialize(description: nil, messages: [])
+        @description = description
+        @messages = messages
+      end
+
+      def to_h
+        { description:, messages: messages.map(&:to_h) }.compact
+      end
+    end
+  end
+end