fix: update key bindings in settings modal for better user experience

Author: gitcoder89431

crates/agentic-tui/src/ui/app.rs

@@ -731,7 +731,7 @@ impl App {
                             _ => {}
                         },
                         AppMode::Settings => match key.code {
-                            KeyCode::Char('r') => self.mode = AppMode::Normal,
+                            KeyCode::Esc => self.mode = AppMode::Normal,
                             KeyCode::Char('s') => {
                                 if let Err(e) = self.settings.save() {
                                     eprintln!("Warning: Failed to save settings: {}", e);

crates/agentic-tui/src/ui/settings_modal.rs

@@ -141,7 +141,7 @@ pub fn render_settings_modal(
     let action_text = match mode {
         AppMode::EditingApiKey => "[ENTER] Save | [CTRL+V] Paste | [ESC] Cancel",
         AppMode::EditingEndpoint => "[ENTER] Save | [ESC] Cancel",
-        _ => "[ENTER] Edit | [↑↓] Navigate | [S]ave | [R]eturn",
+        _ => "[↑↓] Navigate | [S]ave changes | [ESC] Return",
     };
     let action_style = if selection == SettingsSelection::Save {
         theme.highlight_style()