5a:T520,

CarrotGear automatically equips your best mount-speed gear when you mount and restores your original gear when you dismount. It’s built for WoW Classic Anniversary and designed to handle edge cases like forced dismounts, instance transitions, and combat lockdowns (swaps are deferred safely until combat ends).

Features

Auto-equip mount-speed items on mount; restore previous gear on dismount.
Supports Carrot on a Stick, Riding Crop, Skybreaker Whip, Riding Skill (gloves), and Mithril Spurs (boots).
Combat-safe: swaps are deferred until combat ends.
Handles forced dismounts and zoning events.
Optional use of both trinket slots.

Commands

/cg or /carrotgear — help and status
/cg on|off|toggle — enable/disable
/cg both — toggle using both trinket slots
/cg slot 13|14 — preferred trinket slot
/cg rescan — force a bag rescan
/cg debug — toggle debug output

Notes

Heavily inspired by AutoCarrot and CarrotSwap.
Tested only on WoW Classic Anniversary so far.

5b:T459,The MIT License Copyright (c) <year> <copyright holders> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.