feat(Tournament): add official tournament participation feature

- Introduced functionality to load and display official tournament participation events in the CalendarView.
- Updated the API client to fetch official tournament data, enhancing the event management capabilities.
- Added new UI elements to represent official tournaments, including visual indicators and event details.
- Enhanced the ClubManager to support fetching and managing official tournament data.
- Updated the mobile app's TODO list to reflect progress on tournament-related features.

mobile-app/TODO.md

@@ -154,10 +154,10 @@ Web: `DiaryView.vue` (sehr groß). API-Cluster (Auszug – in Web nach `apiClien
 
 ## Phase 7 – Turniere
 
-- [ ] `TournamentsView.vue` – Vereinsturniere
-- [ ] `OfficialTournaments.vue` / offizielle Teilnahmen
-- [ ] `TournamentTab.vue` – eingebettete Logik, soweit mobil relevant
-- [ ] API aus jeweiligen Views dokumentieren und abarbeiten
+- [x] **Vereins-Turniere** (`TournamentsView.vue` / `TournamentTab.vue`): `GET /api/tournament/:clubId` (optional `?type=mini`), clientseitig intern/offen wie Web; `GET /api/tournament/:clubId/:id` für Detail – UI `TournamentsScreen.kt`, `TournamentsApi`, `ClubInternalTournamentsManager`
+- [x] **Offizielle Teilnahmen** (`OfficialTournaments.vue`): `GET /api/official-tournaments/:clubId`, `GET .../participations/summary` – `OfficialTournamentsApi`, `OfficialTournamentsReadManager`, gleicher Screen
+- [x] **Navigation:** Tab **Turniere** (`MainTab.Tournaments`) bei `canReadTournaments()`, Start-Kachel; Deep-Link `/tournaments` für volle Web-Verwaltung
+- [ ] **Nicht mobil:** PDF-Import, Meldungen/ClickTT-Workflows, Spielstände pflegen, Gruppen/K.O. wie Web – bewusst Web-only
 
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