- Add per-item sound keys to `SmashItemManager` and `BonusItemManager`, playing a dedicated clip on smash/collection (load-tolerant via `cache.audio.exists`)
- Preload new FX clips: `smash-{tv,chair,cone}` and `bonus-{cash,ctc,guitar}`
- Rebuild level07 terrain/layout with updated items, bonus placements, goal, and camera bounds
- Move level01 item positions to match new layout
- Update smash-items sprite sheet (PNG/PSD)
