ITEM UPGRADER LITE / REFORGE 1.0.1 — HOTFIX

- Restored the inventory eligibility helper (usable), accidentally removed when deleting the separate enchanted-book screen.
- Restored durability-aware item valuation (valueOf), removed in the same cleanup.
- Fixed the script error "usable is not defined" that prevented the terminal from opening.
- Kept the direct All Items selection, unified enchanted books, Lite icon, separate identities and existing upgrade rules.
- No changes to item values, chance formula or rewards.

Validation: JavaScript syntax, JSON, missing original helper audit, mocked inventory selection, uncataloged wood, locked items, durability valuation and ZIP integrity passed. In-game testing remains required.

Install over Lite 1.0.0 (same UUIDs). Enable both Lite packs. Test in a copy of the world; keep Lite resources above Chest Upgrade. Use one Item Upgrader edition per world while testing.
