Initial commit: WitShop Laravel Online-Shop

- Laravel 11, Blade, Alpine.js, Tailwind CSS
- Produkt- & Kategorieverwaltung mit Varianten
- Checkout (Vorkasse + Rechnung), Session-Warenkorb
- Admin-Backend (Dashboard, Bestellungen, Kunden, CMS)
- DSGVO-konform: Cookie-Consent, Impressum, Widerruf, AGB
- PDF-Rechnung via dompdf, SMTP-Mailversand
- Kundenverwaltung mit manueller Freischaltung

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

app/Models/Product.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class Product extends Model
+{
+    protected $fillable = ['category_id','name','slug','description','base_price','tax_rate','weight','active','featured','track_stock','sort_order'];
+
+    protected $casts = ['active' => 'boolean', 'featured' => 'boolean', 'track_stock' => 'boolean', 'base_price' => 'decimal:2', 'tax_rate' => 'decimal:2'];
+
+    public function category(): BelongsTo
+    {
+        return $this->belongsTo(Category::class);
+    }
+
+    public function images(): HasMany
+    {
+        return $this->hasMany(ProductImage::class)->orderBy('sort_order');
+    }
+
+    public function variants(): HasMany
+    {
+        return $this->hasMany(ProductVariant::class);
+    }
+
+    /** Effektiver Bruttopreis (Basispreis, wenn keine Variante gewählt) */
+    public function getDisplayPriceAttribute(): float
+    {
+        return (float) $this->base_price;
+    }
+
+    public function getNetPriceAttribute(): float
+    {
+        return round($this->base_price / (1 + $this->tax_rate / 100), 2);
+    }
+}