Add repository login component username validation

[Shikachuu]

Validate username in login.go command

Fixes #3069

[apostasie]

Thanks @Shikachuu !

Left a couple of comments.
Looks to me like the CI failure is unrelated, but let's see.

[Shikachuu]

Thanks @Shikachuu !

Left a couple of comments. Looks to me like the CI failure is unrelated, but let's see.

Ngl I don't see any comments but this one, where should I find those?

Checked the CI too, at first glance it doesn't seem login related.

[apostasie]

Thanks @Shikachuu !
Left a couple of comments. Looks to me like the CI failure is unrelated, but let's see.

Ngl I don't see any comments but this one, where should I find those?

Checked the CI too, at first glance it doesn't seem login related.

My bad - forgot to press the big green button to send these comments :p

You should see them now.

[apostasie]

@Shikachuu can you rebase on the latest main? There has been some kerfuffle earlier on project checks (my fault). Hopefully rebasing should fix it.

[Shikachuu]

@Shikachuu can you rebase on the latest main? There has been some kerfuffle earlier on project checks (my fault). Hopefully rebasing should fix it.

✔️ done, hopefully fixes it!

[apostasie]

@Shikachuu can you rebase on the latest main? There has been some kerfuffle earlier on project checks (my fault). Hopefully rebasing should fix it.

✔️ done, hopefully fixes it!

It does.
Thanks a lot @Shikachuu !

LGTM as far as I am concerned (I am not a maintainer here, so, this is not formal approval).

[AkihiroSuda]

Thanks