This is the present form of the std.zh library for 2.54+, for those who wish to review it. The changes and additions are vast, but I broke up all the functions into smaller files by category.
std.zh for [2.54] [2.55] [2.60]
I believe the fact that Firefox 121.0.1 (64-bit) reports that .zip as a potential security risk may have something to do with why you are not getting replies.