fix: add sleep to game loop, panic hook restores terminal

- 16ms sleep per frame prevents 100% CPU spin
- Panic hook restores terminal (disable raw mode, leave alternate screen)
  before printing panic message, so errors are visible
- Remove debug eprintlns

src/game.rs

@@ -196,6 +196,8 @@ impl Game {
             }
 
             self.handle_input(vw, vh);
+
+            std::thread::sleep(std::time::Duration::from_millis(16));
         }
 
         if let Err(e) = renderer.shutdown() {
@@ -206,7 +208,9 @@ impl Game {
     pub fn handle_input(&mut self, vw: usize, vh: usize) {
         let action = self.input.poll();
         match action {
-            Action::Quit => self.running = false,
+            Action::Quit => {
+                self.running = false;
+            }
             Action::MoveLeft => self.player.move_left(&mut self.entities),
             Action::MoveRight => self.player.move_right(&mut self.entities),
             Action::Jump => {

src/main.rs

@@ -28,6 +28,17 @@ fn main() {
 
     match cli.mode.as_str() {
         "terminal" => {
+            std::panic::set_hook(Box::new(|info| {
+                let _ = crossterm::terminal::disable_raw_mode();
+                let _ = crossterm::execute!(
+                    std::io::stdout(),
+                    crossterm::style::ResetColor,
+                    crossterm::cursor::Show,
+                    crossterm::terminal::LeaveAlternateScreen,
+                    crossterm::event::DisableMouseCapture,
+                );
+                eprintln!("PANIC: {}", info);
+            }));
             let mut renderer = TerminalRenderer::new();
             let mut game = Game::new();
             game.run(&mut renderer);