Anvil Fix
The Anvil Fix mod completely removes the level limit when combining items in an anvil. In the standard version of Minecraft, there is a limit of 40 levels, but with this mod, you can repair items an infinite number of times and combine enchantments that were previously unavailable due to being too expensive in Survival mode.
The mod settings include an option to disable the cumulative experience cost when repairing items. This allows you to further simplify the process of restoring your equipment.
It's important to note: technically, this mod does not need to be installed on the client, however if it's missing, the anvil interface will show the "too expensive" warning instead of displaying the level cost, although item combination will still work correctly.