fix(kitty): keep macOS titlebar — it's the only drag handle; color it to match bg

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

config/kitty.conf

@@ -29,7 +29,6 @@ tab_title_max_length    20
 
 # Window layout - no wasted space
 window_padding_width 2
-hide_window_decorations yes
 placement_strategy top-left
 
 # Scrollback
@@ -77,5 +76,5 @@ sync_to_monitor no
 
 # --- macOS ---
 macos_option_as_alt yes
-hide_window_decorations titlebar-only
+macos_titlebar_color background   # keep the titlebar (only drag handle on macOS), just paint it to match
 macos_quit_when_last_window_closed yes