feat(Calendar): integrate CalendarEvent model and enhance calendar functionality

- Added CalendarEvent model to the backend, establishing relationships with the Club model for better event management.
- Updated server.js to include calendarEventRoutes, enabling API access for calendar events.
- Enhanced CalendarView.vue to support custom event creation and management, improving user interaction with the calendar.
- Refactored various components to streamline event handling and improve overall user experience in the calendar interface.
- Updated TODO and DEVELOPMENT documentation to reflect new calendar features and architectural decisions.

backend/server.js

@@ -15,6 +15,7 @@ import {
   GroupActivity, Tournament, TournamentGroup, TournamentMatch, TournamentResult,
   TournamentMember, Accident, UserToken, OfficialTournament, OfficialCompetition, OfficialCompetitionMember, MyTischtennis, ClickTtAccount, MyTischtennisUpdateHistory, MyTischtennisFetchLog, ApiLog, MemberTransferConfig, MemberContact, MemberTtrHistory, MemberPlayInterest,
   MemberOrder, MemberOrderHistory, MemberGroupPhoto, BillingTemplate, BillingTemplateField, BillingRun, BillingDocument, BillingDocumentValue, BillingUserSetting, TrainingCancellation
+  , CalendarEvent
 } from './models/index.js';
 import authRoutes from './routes/authRoutes.js';
 import clubRoutes from './routes/clubRoutes.js';
@@ -60,6 +61,7 @@ import memberOrderRoutes from './routes/memberOrderRoutes.js';
 import memberGroupPhotoRoutes from './routes/memberGroupPhotoRoutes.js';
 import billingRoutes from './routes/billingRoutes.js';
 import calendarRoutes from './routes/calendarRoutes.js';
+import calendarEventRoutes from './routes/calendarEventRoutes.js';
 import schedulerService from './services/schedulerService.js';
 import { requestLoggingMiddleware } from './middleware/requestLoggingMiddleware.js';
 import HttpError from './exceptions/HttpError.js';
@@ -310,6 +312,7 @@ app.use('/api/member-orders', memberOrderRoutes);
 app.use('/api/member-group-photos', memberGroupPhotoRoutes);
 app.use('/api/billing', billingRoutes);
 app.use('/api/calendar', calendarRoutes);
+app.use('/api/calendar-events', calendarEventRoutes);
 
 // Middleware für dynamischen kanonischen Tag (vor express.static)
 const setCanonicalTag = (req, res, next) => {
@@ -565,6 +568,7 @@ app.use((err, req, res, next) => {
     await safeSync(BillingUserSetting);
     await safeSync(ClubTeam);
     await safeSync(TrainingCancellation);
+    await safeSync(CalendarEvent);
     await safeSync(TeamDocument);
 
     // Foreign Keys wieder aktivieren