- Expand smash-items spritesheet from 6 to 12 frames (8x2 grid) with new trash can, tent, and cat props plus their smash sound effects
- Expand bonus-items spritesheet from 12 to 18 frames (9x2 grid) with new spray paint and backpack collectibles plus their firework sounds
- Add level12 ("Curb Check") as a designed level and levels 13-20 as placeholder stubs to fill campaign 2's 10-level map
- Give campaign 2 a custom 3-row serpentine layout on the level select screen to differentiate it from campaign 1's two-lane design
- Update editor preview rendering to handle multi-row spritesheet grids and expose the new item types in the placeables panel
