style: Using clippy lints

src/terminal_guard.rs

@@ -2,28 +2,18 @@ use crossterm::cursor::Show;
 use crossterm::execute;
 use crossterm::terminal::{LeaveAlternateScreen, disable_raw_mode};
 
-pub struct TerminalModeGuard {
-    active: bool,
-}
+/// A guard that ensures the terminal is restored to its original state
+/// when dropped.
+#[derive(Default, Debug)]
+pub struct TerminalModeGuard;
 
-impl TerminalModeGuard {
-    pub fn new() -> Self {
-        Self { active: true }
-    }
+impl TerminalModeGuard {}
 
-    pub fn cleanup(&mut self) {
-        if !self.active {
-            return;
-        }
+impl Drop for TerminalModeGuard {
+    #[allow(clippy::let_underscore_must_use, reason = "We want to ignore errors during cleanup.")]
+    fn drop(&mut self) {
         let _ = disable_raw_mode();
         let mut stdout = std::io::stdout();
         let _ = execute!(stdout, LeaveAlternateScreen, Show);
-        self.active = false;
-    }
-}
-
-impl Drop for TerminalModeGuard {
-    fn drop(&mut self) {
-        self.cleanup();
     }
 }