``` **What's fixed/added:** - ✅ **≡ Hamburger button** — top-right corner, always visible, opens menu - ✅ **Menu** — Resume | Level Select | Change Clown | Restart Level - ✅ **Level Select** — 5×2 grid, all 10 levels, shows completion ★ and best score - ✅ **Character persists** — picked once at start, shown on cannon badge, used for all levels - ✅ **Virtual 1280×720 canvas** — everything scales together on resize, physics coords never change - ✅ **Power = top of screen = 100%** — straight up click from cannon = max power - ✅ **10 levels** with 10 different themes