feat(city): add player marketplace, mission journal, character customization and presence

- Player-to-player marketplace with listings, buying and selling
- Mission system with progress tracking and money rewards
- Character appearance customization (skin, hair, face, beard, accessory)
- Multiplayer presence feed showing nearby citizens in near-real-time
- Admin world dashboard with live platform metrics
- Bus and train transportation with temporary ride state
- Mobile joystick controls and minimap HUD
- Education bonus applied to work salary

resources/views/layouts/app.blade.php

@@ -111,6 +111,7 @@
                         <a href="{{ route('admin.stores.index') }}" class="badge badge-admin" style="text-decoration:none;">{{ __('nav.admin') }}</a>
                         <a href="{{ route('admin.citizens.index') }}">{{ __('nav.citizens') }}</a>
                         <a href="{{ route('admin.cities.index') }}">{{ __('nav.cities') }}</a>
+                        <a href="{{ route('admin.world.index') }}">{{ __('nav.world') }}</a>
                     @endif
                     <form method="POST" action="{{ route('logout') }}">
                         @csrf