Add custom company logo upload and simplify kiosk branding.

Show Ladill Frontdesk or uploaded logo top-left on kiosk; allow logo upload in onboarding and organization settings.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Support/OrganizationBranding.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Support;
+
+use App\Models\Organization;
+use Illuminate\Http\UploadedFile;
+use Illuminate\Support\Facades\Storage;
+
+class OrganizationBranding
+{
+    public const DEFAULT_LOGO = 'images/logo/ladillfrontdesk-logo.svg';
+
+    public static function logoUrl(Organization $organization): string
+    {
+        if ($organization->logo_path && Storage::disk('public')->exists($organization->logo_path)) {
+            $version = $organization->updated_at?->getTimestamp() ?? time();
+
+            return Storage::disk('public')->url($organization->logo_path).'?v='.$version;
+        }
+
+        $path = public_path(self::DEFAULT_LOGO);
+
+        return asset(self::DEFAULT_LOGO).'?v='.(@filemtime($path) ?: '1');
+    }
+
+    public static function logoAlt(Organization $organization): string
+    {
+        return $organization->logo_path ? $organization->name : 'Ladill Frontdesk';
+    }
+
+    public static function hasCustomLogo(Organization $organization): bool
+    {
+        return $organization->logo_path !== null
+            && Storage::disk('public')->exists($organization->logo_path);
+    }
+
+    public static function storeLogo(Organization $organization, UploadedFile $file): string
+    {
+        self::deleteStoredLogo($organization);
+
+        return $file->store('frontdesk/organizations/'.$organization->id, 'public');
+    }
+
+    public static function deleteStoredLogo(Organization $organization): void
+    {
+        if ($organization->logo_path) {
+            Storage::disk('public')->delete($organization->logo_path);
+        }
+    }
+}