Grind Enchant Extract v0.9.1 for Minecraft 26.1.2

Mechanic:
- Drop a normal book onto/near a grindstone.
- Drop an enchanted item onto/near the same grindstone.
- The book must be dropped by a player, not by a dropper/dispenser.
- Survival/adventure players must have enough XP levels.
- Creative players do not need XP and do not lose levels.
- Cost: 5 XP levels per enchantment on the source item.
- Example: 3 enchantments = 15 levels.
- The book becomes an enchanted book with the copied enchantments.
- The source item keeps its other data/components but loses enchantments.

Changes in v0.9.1:
- Based on the working v0.8 logic.
- Creative mode no longer requires or removes XP levels.
- Survival/adventure balance remains unchanged.


v0.9.1: Removed startup chat message on world/server load.
