Rename project from "Cheating Daddy" to "Mastermind" across all files, update version to 0.6.0, and implement migration functionality for users with existing configurations. Enhance onboarding experience with migration options and update relevant documentation.

src/index.html

@@ -123,7 +123,7 @@
                 box-sizing: border-box;
             }
 
-            cheating-daddy-app {
+            mastermind-app {
                 display: block;
                 width: 100%;
                 height: 100%;
@@ -134,10 +134,9 @@
         <script src="assets/marked-4.3.0.min.js"></script>
         <script src="assets/highlight-11.9.0.min.js"></script>
         <link rel="stylesheet" href="assets/highlight-vscode-dark.min.css" />
-        <script type="module" src="components/app/CheatingDaddyApp.js"></script>
+        <script type="module" src="components/app/MastermindApp.js"></script>
 
-        <cheating-daddy-app id="cheatingDaddy"></cheating-daddy-app>
-        <script src="script.js"></script>
+        <mastermind-app id="mastermind"></mastermind-app>
         <script src="utils/renderer.js"></script>
     </body>
 </html>