Merge branch 'dev' of https://gitea.airlabs.art/zyc/video-shuoshan into dev

createMentionSpan 里音频的 ♫ 之前用 textContent 设置，
被 extractText() 的 el.textContent 读进了 prompt 纯文本，
导致 renderPromptWithMentions 匹配后留下额外的 ♫ 字符。

改用 CSS ::before content 渲染，不参与 textContent，
prompt 里不再有多余的 ♫。

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

web/src/components/PromptInput.module.css

@@ -46,6 +46,18 @@
   transition: background 0.15s, opacity 0.15s;
 }
 
+.mentionAudioIcon {
+  display: inline-block;
+  margin-right: 3px;
+  font-size: 13px;
+  vertical-align: middle;
+  pointer-events: none;
+}
+
+.mentionAudioIcon::before {
+  content: '\266B'; /* ♫ rendered via CSS, not textContent — avoids polluting prompt text */
+}
+
 .mentionImg {
   width: 16px;
   height: 16px;

web/src/components/PromptInput.tsx

@@ -88,8 +88,8 @@ export function PromptInput() {
     const isAudio = opts.refType === 'audio' || opts.assetType === 'Audio';
     if (isAudio) {
       const icon = document.createElement('span');
-      icon.textContent = '\u266B';
-      icon.style.cssText = 'margin-right:3px;font-size:13px;vertical-align:middle;pointer-events:none';
+      icon.className = styles.mentionAudioIcon;
+      icon.setAttribute('aria-hidden', 'true');
       span.appendChild(icon);
     } else if (opts.thumbUrl) {
       const img = document.createElement('img');