Mendingless

Mendingless is a Vanilla+ Mending rebalance plugin.

Mending still repairs items like normal, but every item with Mending can repair a specific amount of durability, which you can configure for every item in the config. Once that specified amount of durability gets repaired then the Mending enchantment vanishes from the item.

It also includes configurable anvil costs, librarian Mending prices, item protection at 1 durability, armor retrieve storage, custom lore, legacy lore cleanup, and admin commands.

More details available here
Documentation available here