Playlist: click a track name to (re)start it from the beginning

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/style.css

@@ -331,7 +331,9 @@ textarea.textarea-lg {
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
+  cursor: pointer;
 }
+.track .tname:hover { color: #cde0ff; }
 .track button {
   flex: 0 0 auto;
   padding: 3px 8px;