Sounds like exactly what atuin does, atuin probably adds more metadata to track the success of the command and the working directory though.
The most compatible shebang, that will also work on nixOS, is #!/usr/bin/env bash (and you can replace bash with whatever interpreter like sh of python3). It'll also respect environment overrides and all
Sounds like exactly what atuin does, atuin probably adds more metadata to track the success of the command and the working directory though.