refactor: 清理未使用代码并整合运行时配置逻辑

src/stream/mod.rs

@@ -1,10 +1,6 @@
-//! MJPEG multipart streaming and WebSocket HID (for MJPEG mode).
+//! MJPEG multipart streaming.
 
 pub mod mjpeg;
 pub(crate) mod mjpeg_http;
-#[cfg(feature = "desktop")]
-pub mod ws_hid;
 
 pub use mjpeg::{ClientGuard, MjpegStreamHandler};
-#[cfg(feature = "desktop")]
-pub use ws_hid::WsHidHandler;