apprentice's codex / Remnants of Cruel World FIX

A small compatibility patch for Curios on Forge 1.20.1. Drop it in your mods folder — no config, nothing to set up.

It fixes two unrelated bugs that both leave the Curios back slot unusable (no Slot: Back tooltip line, and backpacks / quivers / capes / elytra can't be equipped).

What it fixes

1. Apprentice's Codex overwrites the back slot's validator

Apprentice's Codex ships data/apprenticecodex/curios/slots/back.json containing only its own validator:

{ "validators": ["apprenticecodex:calibrated_broom"] }