fix: 修复播放器快进后原生进度条吞掉 ESC 导致无法关闭的问题

ui/src/app/app.component.html

@@ -216,7 +216,9 @@
       <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"><line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/></svg>
     </button>
   </div>
-  <video class="player-video" [src]="playerUrl" controls autoplay></video>
+  <video class="player-video" [src]="playerUrl" controls autoplay
+         (keydown.escape)="closePlayer()"
+         (focusin)="onVideoFocusIn($event)"></video>
 </div>
 
 <app-toasts></app-toasts>

ui/src/app/app.component.ts

@@ -180,10 +180,23 @@ export class AppComponent implements OnInit, OnDestroy {
 
   private onPlayerKeydown = (event: KeyboardEvent): void => {
     if (event.key === 'Escape' && this.playerUrl) {
+      // The native video controls (shadow DOM) would otherwise consume the
+      // key after a seek — stop it so the player closes cleanly instead of
+      // only highlighting the progress bar.
+      event.preventDefault();
+      event.stopPropagation();
       this.closePlayer();
     }
   };
 
+  onVideoFocusIn(event: FocusEvent): void {
+    // The native media controls live in a closed UA shadow root; once one of
+    // them (e.g. the progress bar after seeking) holds focus, the browser
+    // consumes Escape internally and no DOM keydown reaches the page. Blur
+    // the video so focus returns to the document and Escape can close it.
+    (event.currentTarget as HTMLVideoElement).blur();
+  }
+
   // ---------- Library (媒体库) ----------
 
   setMode(mode: 'downloads' | 'library'): void {