Zebra's Toggle Sneak&Sprint (Fabric)

This client-side mod replaces the vanilla sneak and sprint toggle behavior with configurable keybindings. A press-duration threshold prevents held keys from toggling, and the threshold can be changed in the configuration screen. The HUD can be positioned by horizontal and vertical alignment, with color, text, or hidden state indicators. The referenced Fly-Boost feature is not included.

Summary based on Modrinth, GitHub README.