Internal Release 0.2.0

- fix `lib/mcp-ruby` auto-import path
- implement server resources
- add basic listing of resources to Server
- allow setting handlers on Server
- wrap handler method results
- make tool definition more declarative
- make prompt definition more declarative
- bump dependency versions

lib/model_context_protocol/resource.rb

@@ -2,57 +2,25 @@
 # frozen_string_literal: true
 
 module ModelContextProtocol
-  module Resource
-    class Embedded
-      attr_reader :resource, :annotations
+  class Resource
+    attr_reader :uri, :name, :description, :mime_type, :contents
 
-      def initialize(resource:, annotations: nil)
-        @resource = resource
-        @annotations = annotations
-      end
-
-      def to_h
-        { resource: resource.to_h, annotations: }.compact
-      end
+    def initialize(uri:, name:, description:, mime_type:, contents:)
+      @uri = uri
+      @name = name
+      @description = description
+      @mime_type = mime_type
+      @contents = contents
     end
 
-    class Contents
-      attr_reader :uri, :mime_type
-
-      def initialize(uri:, mime_type: nil)
-        @uri = uri
-        @mime_type = mime_type
-      end
-
-      def to_h
-        { uri:, mime_type: }.compact
-      end
-    end
-
-    class TextContents < Contents
-      attr_reader :text
-
-      def initialize(text:, uri:, mime_type:)
-        super(uri: uri, mime_type: mime_type)
-        @text = text
-      end
-
-      def to_h
-        super.merge(text: text)
-      end
-    end
-
-    class BlobContents < Contents
-      attr_reader :data
-
-      def initialize(data:, uri:, mime_type:)
-        super(uri: uri, mime_type: mime_type)
-        @data = data
-      end
-
-      def to_h
-        super.merge(data: data)
-      end
+    def to_h
+      {
+        uri: @uri,
+        name: @name,
+        description: @description,
+        mimeType: @mime_type,
+        contents: @contents.map(&:to_h),
+      }
     end
   end
 end