datlechin I have some questions about the repository transfer procedure
I'm listening 😉. But you don't need to transfer anything. I'll import existing translations from your language pack to Weblate, a since then all translation will be exported from Weblate to your language pack. So it does not change that much, you just need to use Weblate interface instead of editing YAML files directly (bot may overwrite your changes in that case, since it always uses state from template to generate YAML files in language pack and ignores any direct modifications in these files).
Transfer repository to https://github.com/flarum-lang is different story, and while it is recommended, it is not really necessary in order to use Weblate.