refactor: Phase 1 code consolidation and service layer setup

Phase 1.1: Shared parsers utility
- Create backend/src/utils/parsers.js with parseBooleanInput, parseStringInput, etc.
- Create frontend/src/utils/parsers.ts with TypeScript equivalents
- Update routes to import from shared parsers

Phase 1.2: Auth routes consolidation
- Merge auth.js, auth-enhanced.js, auth-enhanced-v2.js into single auth.js
- Add password change and password strength endpoints
- Consolidate middleware (auth.js with token revocation support)
- Update all imports across 14+ route files

Phase 1.3: CreateEvent page consolidation
- Remove duplicate CreateEventPage.tsx (basic version)
- Rename CreateEventPageEnhanced.tsx to CreateEventPage.tsx
- Update exports and imports

Phase 1.4: CMS page consolidation
- Remove duplicate CMSPage.tsx (basic version)
- Rename CMSPageEnhanced.tsx to CMSPage.tsx
- Update exports and imports

Phase 1.5: Multer config factory
- Create backend/src/config/multerConfig.js
- Centralized upload configuration with presets for photos, logos, favicons
- Reusable helpers: createDiskStorage, createFileFilter, uploadTimeoutMiddleware

Phase 2.1: Event service layer
- Create backend/src/services/eventService.js
- Move event business logic out of routes
- Functions: createEvent, getAllEvents, updateEvent, deleteEvent, extendExpiration

backend/server.js

@@ -34,7 +34,7 @@ const {
 } = require('./src/utils/tokenUtils');
 
 // Import routes
-const authRoutes = require('./src/routes/auth-enhanced');
+const authRoutes = require('./src/routes/auth');
 const eventRoutes = require('./src/routes/events');
 const galleryRoutes = require('./src/routes/gallery');
 const adminRoutes = require('./src/routes/admin');