USER ASSET SLOTS — DO NOT REPLACE WITH VANILLA PLACEHOLDERS

The final Steel Ball and Herbal Tea visuals are user-authored 3D models.

Recommended Blockbench vanilla-item export paths:
- assets/jojo/models/item/steel_ball.json
- assets/jojo/models/item/herbal_tea.json
- assets/jojo/textures/item/<user texture files>.png

Replace the current temporary generated-item JSON files with the exported 3D item JSON files.
Keep the registry names exactly `jojo:steel_ball` and `jojo:herbal_tea`; no Java registry changes are required.

If animated GeckoLib item models are chosen instead, wire the user-supplied resources only after these files exist:
- assets/jojo/geo/steel_ball.geo.json
- assets/jojo/geo/herbal_tea.geo.json
- assets/jojo/animations/steel_ball.animation.json (optional)
- assets/jojo/animations/herbal_tea.animation.json (optional)

No model or texture is generated by the codebase.
