This mod, QuickBench & Tweaks, is licensed under the MIT license, inherited from the upstreams, FastWorkbench for Forge and FastBench for Fabric, made by Shadows of Fire and Tfarcenim respectively.
Due to the lack of clarity from the upstream repository, FabricFastBench is assumed to have been licensed under the MIT license, as its upstream, FastWorkbench is licensed as MIT, and the CurseForge project claims it is also licensed as MIT, unlike the GitHub repository, which claims it's licensed as CC0-1.0.
It is maybe fair to assume that the code solely produced by Tfarcenim maybe used under the CC0-1.0 when without context. However, given the original README.md stated that the template was under the CC0-1.0, and everything else says MIT, it should be assumed the license of choice was intended to be MIT.
Several contributions from Ampflower are also available under CC0-1.0, and will be clearly marked in the license header of each file. You may freely use snippets or full copies of code solely contributed by Ampflower under the terms of the CC0-1.0. If the snippets have been combined, remixed or derived from the surrounding code, you must assume the terms of the MIT license may be applied.
Both the CC0-1.0 and MIT licenses are provided for reference.
The dates and names used within the copyright header have been reconstructed based on the licenses and git history of both FastWorkbench and FastBench for Fabric.