Gitea has tea and Forgejo/Codeberg has berg, see also https://docs.codeberg.org/git/clone-commit-via-cli/#gitea-%2F-forgejo-cli-tea
Bad clickbait headline.
Depends on what your language's script is then with assigned Unicode characters, how wide-spread it is, when fonts will support the glyphs, and what you mean by "changes to be available on my local OS". What OS? What does available mean here? Do you expect the OS UI to be in your language? Doubtful. Some desktop environment maybe somewhen. Programs using ICU are more likely to support specific script related features (e.g. word/line breaking, transliteration) when ICU will support Unicode 16 in its next version. Locale specifics may have to wait for or could be contributed to CLDR that is also used by ICU. Availability of any UI in the language mostly depends on whether translators contribute to the relevant projects.
They are "looking for a more private" client. With the centralized Discord service that does anything it wants with any message there is no such thing.
Whatever client you use, there is no privacy with Discord. Period. Full stop.
Apparently not, you can check commits in https://git.tukaani.org/?p=xz.git;a=summary the first authored commit was 2022-01-28, then long time nothing until 2022-06-10, the first merge as committer was 2022-12-16.
Making one a maintainer (with merge and possibly even direct commit/push permissions) is handing them a key to the kingdom. Recruiting a maintainer out of the blue without them being already contributor and long term participant in the project is questionable.
Of the xz/liblzma backdoor incident.
Malicious account holders with a long term goal need to build reputation. It doesn't matter much that such an app isn't a dependency of other software.
This is how one attracts and invites Jia Tan and Hans Jansen types.