feat(03-01): add palette system to GameConfig and extend GameState

- Add PALETTES object with MAGENTA, CYAN, LIME, WHITE presets
- Add PALETTE_KEYS array for palette cycling
- Change gameState initial value from 'modeSelect' to 'title'
- Add activePalette, soundEnabled, selectedMenu, previousState to GameState
- Initialize GameState.activePalette to MAGENTA preset after GameConfig is defined

index.html

@@ -22,7 +22,15 @@
 
       AI_EASY:   { speed: 200, reactionDelay: 0.3,  errorMargin: 20 },
       AI_MEDIUM: { speed: 320, reactionDelay: 0.1,  errorMargin: 5  },
-      AI_HARD:   { speed: 400, reactionDelay: 0.05, errorMargin: 2  }
+      AI_HARD:   { speed: 400, reactionDelay: 0.05, errorMargin: 2  },
+
+      PALETTES: {
+        MAGENTA: { accent: '#ff00cc', glow: 'rgba(255,0,204,0.6)',   name: 'Magenta' },
+        CYAN:    { accent: '#00ffff', glow: 'rgba(0,255,255,0.6)',   name: 'Cyan'    },
+        LIME:    { accent: '#00ff00', glow: 'rgba(0,255,0,0.6)',     name: 'Lime'    },
+        WHITE:   { accent: '#ffffff', glow: 'rgba(255,255,255,0.6)', name: 'White'   }
+      },
+      PALETTE_KEYS: ['MAGENTA', 'CYAN', 'LIME', 'WHITE']
     };
 
     const Renderer = {
@@ -116,10 +124,16 @@
       score2: 0,
       mode: null,             // null = mode select screen; 'ai' = Solo vs AI; '2p' = 2-Player local
       difficulty: 'medium',   // 'easy', 'medium', 'hard'
-      gameState: 'modeSelect',// 'modeSelect', 'diffSelect', 'playing', 'scored', 'gameover'
-      winner: null            // null, 'player1', 'player2', 'ai'
+      gameState: 'title',     // 'title', 'settings', 'modeSelect', 'diffSelect', 'playing', 'scored', 'gameover'
+      winner: null,           // null, 'player1', 'player2', 'ai'
+      activePalette: null,    // Set after GameConfig defined — see init sequence
+      soundEnabled: true,
+      selectedMenu: 0,
+      previousState: null
     };
 
+    GameState.activePalette = GameConfig.PALETTES.MAGENTA;
+
     const Input = {
       keys: { w: false, s: false, arrowUp: false, arrowDown: false },
       _handleKeyDown: null,