i18n spiegelt die aktive Sprache auf <html lang> (Init + languageChanged;
der User-Locale-Wechsel in auth-context läuft über dasselbe Event). Neuer
useDocumentTitle-Hook setzt je Route einen sprechenden Titel
(Seite — Teich — Dorfteich), verdrahtet in allen Routen-Komponenten;
dynamische Titel folgen den geladenen Daten.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AGM8jo3hwoV9wsCVGfy8iq
The web app grows its account surface: login (with next-redirect,
unverified-hint + resend), signup (react-hook-form + shared Zod
schemas, field-level api errors, closed-registration state fed by the
new public GET /auth/registration), e-mail verification, forgot/reset
password; a settings page with profile (locale applies immediately),
password change, and active-session management; a Site-Admin page for
instance name, default locale, and registration mode. AuthProvider
holds /auth/me, applies the profile locale, and backs route guards
(RequireAuth/RequireAnonymous/RequireSiteAdmin); the top bar gains a
user menu. All strings ship in the new auth/settings namespaces (de+
en); the exception filter now preserves handler-specific error codes.
Verified live: signup → Mailpit → verify → login → profile through
the Vite proxy.
Closes#16Closes#17Closes#18Closes#19
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
