Shellcheck warnings and errors only

[achamayou]

No description provided.

[maxtropets]

I personally prefer to see warnings and making a decision of whether to disable or fix particular things.

For bash checks, however, I don't think I care enough to insist on that, just sharing my thoughts here.

[achamayou]

@maxtropets yes, this show errors and warnings still, but disables "info" and "style": https://github.com/koalaman/shellcheck/blob/d3001f337aa3f7653a621b302261f4eac01890d0/shellcheck.1.md?plain=1#L108

Those are quite opinionated and not terribly helpful, if you look at the ones we have so far. SC2230 for example recommends a substantially worse alternative to which, to avoid taking a non-POSIX dependency. This is actively counter-productive for our intended usage, and even arguably in general in 2025.