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/audioUtils.js

@@ -86,7 +86,7 @@ function analyzeAudioBuffer(buffer, label = 'Audio') {
 // Save audio buffer with metadata for debugging
 function saveDebugAudio(buffer, type, timestamp = Date.now()) {
     const homeDir = require('os').homedir();
-    const debugDir = path.join(homeDir, 'cheating-daddy-debug');
+    const debugDir = path.join(homeDir, 'mastermind-debug');
 
     if (!fs.existsSync(debugDir)) {
         fs.mkdirSync(debugDir, { recursive: true });