refactor(web): 前端代码规范化重构

- 集中化 HID 类型定义到 types/hid.ts，消除重复代码
- 统一 WebSocket 连接管理，提取共享工具到 types/websocket.ts
- 拆分 ConsoleView.vue 关注点，创建 useVideoStream、useHidInput、useConsoleEvents composables
- 添加 useConfigPopover 抽象配置弹窗公共逻辑
- 优化视频容器布局，支持动态比例自适应

src/webrtc/peer.rs

@@ -351,6 +351,15 @@ impl PeerConnection {
 
     /// Close the connection
     pub async fn close(&self) -> Result<()> {
+        // Reset HID state to release any held keys/buttons
+        if let Some(ref hid) = self.hid_controller {
+            if let Err(e) = hid.reset().await {
+                tracing::warn!("Failed to reset HID on peer {} close: {}", self.session_id, e);
+            } else {
+                tracing::debug!("HID reset on peer {} close", self.session_id);
+            }
+        }
+
         if let Some(ref track) = self.video_track {
             track.stop();
         }