Ageing Cauldrons

A simple datapack repacked as a mod that will age copper items by tossing them into a water cauldron, nothing more, nothing less.

Somehow, that text apparently doesn't cover all features and how they affect the user's experience, so let me be clear about this:

• If you take any of the vanilla copper items that can have different stages of oxidization and throw them into a cauldron, they will, if possible, age for one stage.
• If you want it aged another stage, pick it up and throw it in again.
• Repeat until you've reached the desired stage or reached full oxidization. In case of the latter, nothing will happen if you throw it in again.
• It takes however many items you decide to throw at it and ages them instantly¹.
• Unlike regular copper ageing, it doesn't care about nearby water, time, and space (to other cauldrons or copper items).
• Ethically unobjectionable: No AI agents were hurt or even bothered in the making of this mod/datapack, not least because it's just too trivial.

¹) A hopper beneath the cauldron slurps the items in before they can be aged, so that's even instanter[sic!] than the ageing process, which may be a bit of comfort to old folks like me, who feel like they're aging at light speed.

Note that this currently only supports Minecraft 1.21/1.21.1 vanilla items.