feat: add text cleared with ctrl+c to the history so it can be recovered with up arrow (#5470)

https://github.com/user-attachments/assets/5eed882e-6a54-4f2c-8f21-14fa0d0ef347

codex-rs/tui/src/chatwidget/tests.rs

@@ -692,6 +692,40 @@ fn ctrl_c_shutdown_ignores_caps_lock() {
     }
 }
 
+#[test]
+fn ctrl_c_cleared_prompt_is_recoverable_via_history() {
+    let (mut chat, _rx, mut op_rx) = make_chatwidget_manual();
+
+    chat.bottom_pane.insert_str("draft message ");
+    chat.bottom_pane
+        .attach_image(PathBuf::from("/tmp/preview.png"), 24, 42, "png");
+    let placeholder = "[preview.png 24x42]";
+    assert!(
+        chat.bottom_pane.composer_text().ends_with(placeholder),
+        "expected placeholder {placeholder:?} in composer text"
+    );
+
+    chat.handle_key_event(KeyEvent::new(KeyCode::Char('c'), KeyModifiers::CONTROL));
+    assert!(chat.bottom_pane.composer_text().is_empty());
+    assert_matches!(op_rx.try_recv(), Err(TryRecvError::Empty));
+    assert!(chat.bottom_pane.ctrl_c_quit_hint_visible());
+
+    chat.handle_key_event(KeyEvent::new(KeyCode::Up, KeyModifiers::NONE));
+    let restored_text = chat.bottom_pane.composer_text();
+    assert!(
+        restored_text.ends_with(placeholder),
+        "expected placeholder {placeholder:?} after history recall"
+    );
+    assert!(restored_text.starts_with("draft message "));
+    assert!(!chat.bottom_pane.ctrl_c_quit_hint_visible());
+
+    let images = chat.bottom_pane.take_recent_submission_images();
+    assert!(
+        images.is_empty(),
+        "attachments are not preserved in history recall"
+    );
+}
+
 #[test]
 fn exec_history_cell_shows_working_then_completed() {
     let (mut chat, mut rx, _op_rx) = make_chatwidget_manual();