Add Model/Repository postfix to all class and file names

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/model/game_model.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-class Game
+class GameModel
   attr_reader :title, :platform, :author, :desc,
               :play_path, :download_path, :source_path, :docs_path,
               :release_count

lib/model/message.rb

@@ -1,3 +0,0 @@
-# frozen_string_literal: true
-
-Message = Struct.new(:timestamp, :username, :text)

lib/model/message_model.rb

@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+MessageModel = Struct.new(:timestamp, :username, :text)

lib/model/wiki_page.rb

@@ -1,3 +0,0 @@
-# frozen_string_literal: true
-
-WikiPage = Struct.new(:id, :path, :title, :description, :created_at, :locale, keyword_init: true)

lib/model/wiki_page_model.rb

@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+WikiPageModel = Struct.new(:id, :path, :title, :description, :created_at, :locale, keyword_init: true)