You've got a trading hall with 20 villagers. Each one has up to 10 trades. You open the weaponsmith and scroll past six trades you never use to find the one you actually want. Every. Single. Time.
Say you're buying golden carrots from 8 maxed farmers — that's a master-level trade buried at the bottom of the list. Over a typical survival world, that adds up to 1,664 scroll wheel ticks and 20 minutes spent scrolling past bread and beetroot trades you'll never use. Your scroll wheel deserves better.
Handy Traders lets you bookmark individual trades per villager. Favorited trades sort to the top of the list so the trades you care about are always right there when you open the UI.
Install YACL + Mod Menu for an in-game config screen. Without them, everything still works — just edit config/handytraders.json.
Also check out Handy Shulkers — bundle-like interactions for shulker boxes.
Pure client-side. No gameplay changes. Just stops you from scrolling.