fix: 修复自动播放时机问题，audioBtnId作用域修复

static/tts.html

@@ -879,6 +879,8 @@
             const msg = document.createElement('div');
             msg.className = `message ${role}`;
             
+            let audioBtnId = '';  // 在函数顶部声明
+            
             if (role === 'user' && content instanceof Blob) {
                 const audioUrl = URL.createObjectURL(content);
                 msg.innerHTML = `
@@ -892,7 +894,6 @@
                 `;
             } else if (role === 'assistant') {
                 let audioHtml = '';
-                let audioBtnId = '';
                 if (audioData) {
                     audioBtnId = `audioBtn_${Date.now()}`;
                     audioHtml = `<button class="play-btn tts-play-btn" id="${audioBtnId}" onclick="playAudio('${audioData}', this)">
@@ -904,9 +905,15 @@
                     <div class="role">AI</div>
                     <div class="content">${content}${audioHtml}</div>
                 `;
+            } else {
+                msg.innerHTML = `<div class="role">我</div><div class="content">${content}</div>`;
+            }
             
-                // 自动播放（如果开启）
+            chatSection.appendChild(msg);
-                if (audioData && autoPlay) {
+            chatSection.scrollTop = chatSection.scrollHeight;
+            
+            // 自动播放（在元素添加到DOM后）
+            if (role === 'assistant' && audioData && autoPlay && audioBtnId) {
                 setTimeout(() => {
                     const btn = document.getElementById(audioBtnId);
                     if (btn) {
@@ -914,12 +921,6 @@
                     }
                 }, 100);
             }
-            } else {
-                msg.innerHTML = `<div class="role">我</div><div class="content">${content}</div>`;
-            }
-            
-            chatSection.appendChild(msg);
-            chatSection.scrollTop = chatSection.scrollHeight;
         }
         
         // 播放音频