```

fix(ChengduGamePage): update game title from '指尖四川麻将' to '四川麻将'

- Changed the game title in the scene watermark from '指尖四川麻将' to '四川麻将'
- This updates the display text to be more concise while maintaining the core game identity
```

src/views/ChengduGamePage.vue

@@ -369,7 +369,7 @@ onBeforeUnmount(() => {
           </div>
 
           <div class="scene-watermark">
-            <strong>指尖四川麻将</strong>
+            <strong>四川麻将</strong>
             <span>{{ roomState.name || roomName || '成都麻将房' }}</span>
             <small>底注 6 亿 · 封顶 32 倍</small>
           </div>