fix: 视频源删除按钮回归工具栏统一风格

internal/web/ui/templates/assets.html

@@ -220,14 +220,9 @@ toggleIntegrationFields('{{.AssetIntegration.Type}}');
           <td>{{if .Config.Resolution}}{{.Config.Resolution}}{{else}}-{{end}}</td>
           <td class="mono">{{if .Config.FPS}}{{.Config.FPS}}{{else}}-{{end}}</td>
           <td>{{.RefCount}}</td>
-          <td>
-            <form method="post" action="/assets/video-sources/{{.Name}}/delete" style="display:inline" onsubmit="return confirm('删除 {{.Name}}？')">
-              <button class="btn-icon ghost" title="删除">&times;</button>
-            </form>
-          </td>
         </tr>
         {{else}}
-        <tr><td colspan="8"><div class="empty-state compact"><div class="empty-title">还没有视频源</div></div></td></tr>
+        <tr><td colspan="7"><div class="empty-state compact"><div class="empty-title">还没有视频源</div></div></td></tr>
         {{end}}
       </tbody>
     </table>