admin 4b17537a9a feat(i18n): add EN/DE language support with next-intl ...

- Install next-intl@4 with cookie-based locale switching (NEXT_LOCALE)
- Add LanguageSwitcher component in Sidebar footer
- Translate Nav, PostTypeSheet, Feed, Explore, WelcomeCard, PetForm,
  AvatarUpload, and Onboarding pages (EN + DE)
- Add SpeciesTranslation and BreedTranslation DB models for locale-aware
  taxonomy; listSpecies and listBreeds accept optional locale param
- Seed German translations for all 3 species and 45 breeds
- Add SQL migration script for Supabase (add_i18n_translations.sql)
- fix(invite): secure cookie flag and set-invite route for HTTPS

2026-06-22 14:01:16 +02:00

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