Roles via Nextcloud groups: sms-admin/manager/viewer + fix OAuth instance_uri

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Filament/User/Resources/SpiceSupplierResource.php

@@ -2,6 +2,7 @@
 
 namespace App\Filament\User\Resources;
 
+use App\Traits\EnforcesRoles;
 use App\Filament\User\Resources\SpiceSupplierResource\Pages;
 use App\Filament\User\Resources\SpiceSupplierResource\RelationManagers;
 use App\Models\SpiceSupplier;
@@ -23,6 +24,7 @@ use Filament\Tables\Columns\TextColumn;
 
 class SpiceSupplierResource extends Resource
 {
+    use EnforcesRoles;
     protected static ?string $model = SpiceSupplier::class;
 
     protected static ?string $navigationIcon = 'heroicon-o-arrow-down-on-square';