Part of #178 - UI/UX Architecture Improvements
Purpose: Update bottom navigation to match new IA
New Tab Order:
Coins | Mind | Beats | Stream | Arena | Quest
Changes Required:
- Update app_shell.dart with 6 navigation destinations
- Update app_router.dart with correct branches
- Update navigation_provider.dart with new tab configs
- Remove unused branches (Loot, Tales, etc.)
Files to Update:
- app/lib/core/app/app_shell.dart
- app/lib/core/routing/app_router.dart
- app/lib/core/providers/navigation_provider.dart