Feature: Tenant Short Name and Branding Implementation

- Added short_name to Tenant model and controller
- Updated Landlord/Tenant pages (Create, Edit, Show, Index)
- Implemented branding customization (Favicon, Login Copyright, Sidebar Title)
- Updated HandleInertiaRequests to share branding data

resources/views/app.blade.php

@@ -7,6 +7,7 @@
         <title inertia>{{ config('app.name', 'Laravel') }}</title>
 
         <!-- Fonts -->
+        <link rel="icon" type="image/png" href="{{ $branding['logo_url'] ?? '/favicon.png' }}">
         <link rel="preconnect" href="https://fonts.googleapis.com">
         <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
         <link href="https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;700&display=swap" rel="stylesheet">