Fix typing lag: use ControlFlow::Poll for continuous frame updates

The winit event loop defaulted to Wait mode, only processing frames
when user input arrived. Switch to Poll so the loop continuously
checks for new frames from the network thread.

crates/wrclient/src/main.rs

@@ -102,7 +102,11 @@ impl ApplicationHandler for App {
         );
     }
 
-    fn about_to_wait(&mut self, _event_loop: &ActiveEventLoop) {
+    fn about_to_wait(&mut self, event_loop: &ActiveEventLoop) {
+        // Use Poll mode so the event loop continuously checks for new frames
+        // instead of blocking until user input arrives.
+        event_loop.set_control_flow(winit::event_loop::ControlFlow::Poll);
+
         // Drain any pending frames from the network thread.
         let mut got_frame = false;
         while let Ok(frame) = self.frame_rx.try_recv() {