Make description read-only and auto-sized using Placeholder

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

app/Filament/User/Resources/ProductResource.php

@@ -46,8 +46,10 @@ class ProductResource extends Resource {
                     ->panelLayout('grid')
                     ->imagePreviewHeight('200')
                     ->columnSpanFull(),
-                Forms\Components\Textarea::make('description')
-                    ->label('Beschreibung'),
+                Placeholder::make('description')
+                    ->label('Beschreibung')
+                    ->content(fn ($record) => $record?->description ?? '—')
+                    ->columnSpanFull(),
                 Forms\Components\Select::make('recipes_id')
                     ->label('Rezept')
                     ->native(false)