fix: use terminal guard which allows drop-based cleanup

src/main.rs

@@ -125,9 +125,25 @@ impl Termato {
   }
 }
 
+struct TerminalGuard;
+
+impl TerminalGuard {
+  fn new() -> Result<Self, io::Error> {
+    enable_raw_mode()?;
+    stdout().execute(EnterAlternateScreen)?;
+    Ok(TerminalGuard)
+  }
+}
+
+impl Drop for TerminalGuard {
+  fn drop(&mut self) {
+    let _ = disable_raw_mode();
+    let _ = stdout().execute(LeaveAlternateScreen);
+  }
+}
+
 fn main() -> Result<(), io::Error> {
-  enable_raw_mode()?;
-  stdout().execute(EnterAlternateScreen)?;
+  let _guard = TerminalGuard::new()?;
 
   let backend = CrosstermBackend::new(stdout());
   let mut terminal = Terminal::new(backend)?;
@@ -249,8 +265,6 @@ fn main() -> Result<(), io::Error> {
     }
   }
 
-  disable_raw_mode()?;
-  stdout().execute(LeaveAlternateScreen)?;
   Ok(())
 }