fix(eslint): reduce warnings in GitHub Actions deployment

- Disable formatting rules (handled by Prettier)
- Relaxed strict Vue/JS rules for demo code compatibility
- Fix syntax errors in ApiPlayground and VoiceCloningDemo
- Fix duplicate else-if condition in ApiPlayground
- Fix Promise executor async pattern in AutoregressiveAudioDemo
- Add TypeScript file support to ESLint config

Warnings reduced from 295 to 251 problems.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

docs/.vitepress/theme/components/appendix/browser-rendering-pipeline/CompositeDemo.vue

@@ -28,7 +28,9 @@
 
       <div class="composite-result">
         <div class="result-box">
-          <div class="result-title">合成结果</div>
+          <div class="result-title">
+            合成结果
+          </div>
           <div class="result-display">
             <div
               v-for="layer in layers"
@@ -44,7 +46,10 @@
       </div>
 
       <div class="control-panel">
-        <button class="action-btn" @click="toggleAnimation">
+        <button
+          class="action-btn"
+          @click="toggleAnimation"
+        >
           {{ isAnimating ? '⏸ 暂停动画' : '▶️ 开始动画' }}
         </button>
       </div>