Show Rohstoffe nav and delete action for sms-admin only

Nav entry was fully hidden; now visible only to admins for management.
Delete action added to table rows (bulk delete was already there).

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

app/Filament/User/Resources/SpiceResource.php

@@ -24,7 +24,10 @@ class SpiceResource extends Resource
     protected static ?string $slug = 'rohstoffe';
     protected static ?string $navigationGroup = 'Lager';
 
-    protected static bool $shouldRegisterNavigation = false;
+    public static function shouldRegisterNavigation(): bool
+    {
+        return auth()->user()?->hasRole('sms-admin') ?? false;
+    }
     protected static ?string $navigationIcon = 'heroicon-o-cube';
 
     public static function form(Form $form): Form
@@ -74,6 +77,7 @@ class SpiceResource extends Resource
             ])
             ->actions([
                 Tables\Actions\EditAction::make(),
+                Tables\Actions\DeleteAction::make(),
             ])
             ->bulkActions([
                 Tables\Actions\BulkActionGroup::make([