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/js/Pages/Landlord/Tenant/Show.tsx

@@ -11,6 +11,7 @@ interface Domain {
 interface Tenant {
     id: string;
     name: string;
+    short_name: string | null;
     email: string | null;
     is_active: boolean;
     created_at: string;
@@ -97,6 +98,10 @@ export default function TenantShow({ tenant }: Props) {
                                 </span>
                             </dd>
                         </div>
+                        <div>
+                            <dt className="text-sm text-slate-500">客戶簡稱</dt>
+                            <dd className="mt-1 text-slate-900">{tenant.short_name || "-"}</dd>
+                        </div>
                         <div>
                             <dt className="text-sm text-slate-500">聯絡信箱</dt>
                             <dd className="mt-1 text-slate-900">{tenant.email || "-"}</dd>