- New VerantwortlicheInvite model: LT-issued invites so a person can
register as Gemeinde Verantwortliche(r) for a specific Gemeinde,
skipping the self-registration approval step.
- Wahl/Workshop/Teilnehmer gain phase support (phasenAnzahl,
beschreibung), mirroring the WP plugin's multi-phase elections.
Teilnehmer unique constraint now scoped per phase.
- Auth: team login + guest auth adjustments, spec coverage.
- sync.service.ts: register VerantwortlicheInvite as a synced model.
- wahl.service.ts: submitTeilnehmer updated for the new phase-scoped
unique key.
- client: login/home screen rework, new theme.dart, FCM web tweaks.
- .gitignore: ignore .DS_Store.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>