プロトコル経由のshutdow経路

crates/tui/src/app.rs

@@ -12,6 +12,7 @@ pub struct App {
     pub input: String,
     pub cursor: usize,
     pub quit: bool,
+    pub shutdown_confirm: Option<std::time::Instant>,
     /// Lines waiting to be flushed to terminal via insert_before.
     pub output_queue: Vec<OutputItem>,
     /// Partial streaming text not yet terminated by newline.
@@ -55,6 +56,7 @@ impl App {
             input: String::new(),
             cursor: 0,
             quit: false,
+            shutdown_confirm: None,
             output_queue: Vec::new(),
             pending_text: String::new(),
         }
@@ -193,6 +195,9 @@ impl App {
                     self.output_queue.insert(1, OutputItem::Blank);
                 }
             }
+            Event::Shutdown => {
+                self.quit = true;
+            }
         }
     }
 

crates/tui/src/main.rs

@@ -168,6 +168,9 @@ fn handle_key(app: &mut App, key: KeyEvent) -> Option<Method> {
         }
         KeyCode::Char('r') if key.modifiers.contains(KeyModifiers::CONTROL) => Some(Method::Resume),
         KeyCode::Char('x') if key.modifiers.contains(KeyModifiers::CONTROL) => Some(Method::Cancel),
+        KeyCode::Char('d') if key.modifiers.contains(KeyModifiers::CONTROL) => {
+            return handle_shutdown(app);
+        }
         KeyCode::Enter => app.submit_input(),
         KeyCode::Backspace => {
             app.delete_char_before();
@@ -200,3 +203,23 @@ fn handle_key(app: &mut App, key: KeyEvent) -> Option<Method> {
         _ => None,
     }
 }
+
+const SHUTDOWN_CONFIRM_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(3);
+
+fn handle_shutdown(app: &mut App) -> Option<Method> {
+    if !app.running {
+        return Some(Method::Shutdown);
+    }
+    if let Some(t) = app.shutdown_confirm {
+        if t.elapsed() < SHUTDOWN_CONFIRM_TIMEOUT {
+            app.shutdown_confirm = None;
+            return Some(Method::Shutdown);
+        }
+    }
+    app.shutdown_confirm = Some(std::time::Instant::now());
+    app.output_queue.push(app::OutputItem::Padded(
+        app::MessageKind::Error,
+        "Turn is running. Press Ctrl-D again to cancel and shut down.".into(),
+    ));
+    None
+}