Update pt_BR translations for redesigned admin UI strings

[eudameron]

Summary

• Updates Brazilian Portuguese (pt_BR) catalog so msgids match the current FOSSBilling admin UI (including Title Case strings introduced in the redesign).
• Adds translations for newly introduced settings/admin strings that were missing from the previous locale release.
• Touches only pt_BR/LC_MESSAGES/messages.po and messages.mo.

Notes

• Many newly added strings were AI-assisted and should be reviewed by native speakers on Crowdin if preferred.
• Includes both .po and .mo to match the current repository layout; maintainers may regenerate .mo from .po if that is the preferred workflow.

Test plan

• Install/replace pt_BR locale files in a FOSSBilling instance set to i18n.locale = pt_BR
• Confirm previously English admin labels (e.g. billing periods, activity log retention, settings screens) render in Portuguese
• Spot-check critical areas: invoices, payments, email settings, system settings

Made with Cursor

[admdly]

@eudameron Thanks for contributing to FOSSBilling translations. We usually accept translations via Crowdin (https://translate.fossbilling.org), and it would be great if you could submit these there.

I could import these as one time if they're a significant improvement, but I note that they appear AI generated and haven't been reviewed by a native speaker. We don't have an issue with AI as such, but translations should be reviewed by a native speaker at a minimum before we can accept and approve them.

Could you advise whether these have been reviewed fully by a native speaker before we consider them?

[eudameron]

Hello, thanks for the reply! I’m a native speaker and have reviewed the terms; I even made some improvements to the current translation, as there were a few words we don’t use around here—they seemed like European Portuguese terms. Now I’m able to use FOSSBilling in PT-BR in my daily routine without any translation issues.