fix: update terminal tab title from 'DeepSeek TUI' to 'CodeWhale'

crates/tui/src/core/engine/turn_loop.rs

@@ -23,7 +23,7 @@ impl Engine {
         // Signal to the terminal / taskbar that a turn is in progress
         // (OSC 9 ; 4 indeterminate progress + title spinner).
         crate::tui::notifications::set_taskbar_progress_busy();
-        crate::tui::notifications::start_title_animation("DeepSeek TUI");
+        crate::tui::notifications::start_title_animation("CodeWhale");
 
         let client = self
             .deepseek_client

crates/tui/src/tui/notifications.rs

@@ -315,7 +315,7 @@ pub fn stop_title_animation() {
     // terminal-level visual indicator (flash/icon).
     let mode = COMPLETION_SOUND_MODE.load(Ordering::SeqCst);
     if mode == 1 {
-        set_terminal_title("✅ DeepSeek TUI");
+        set_terminal_title("✅ CodeWhale");
     }
     play_completion_sound();
 }
@@ -326,7 +326,7 @@ pub fn stop_title_animation() {
 /// marker doesn't persist once the user is back at the terminal.
 pub fn reset_title_on_interaction() {
     if COMPLETION_MARKER_SHOWN.swap(false, Ordering::SeqCst) {
-        set_terminal_title("DeepSeek TUI");
+        set_terminal_title("CodeWhale");
     }
 }