Create a transparent PNG spritesheet of top-down construction zone props.

Sheet rules:
- 32x32 cells
- transparent background
- high visibility yellow/orange hazard palette
- reusable across roads, alleys, industrial zones

Assets:
traffic cones, striped barriers, cement blocks, scaffolding, generators, construction lights, portable toilets, warning signs, construction fencing, piles of dirt, rebar stacks, cement mixers.

Gameplay role:
clear obstacles, roadblocks, mission set dressing, chase blockers.
