feat(billing): renewals, coupons, VAT numbering, billing cycles and invoice payment tracking

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

app/Models/Order.php

@@ -22,6 +22,13 @@ class Order extends Model
         'paid_at' => 'datetime',
     ];
 
+    protected static function booted(): void
+    {
+        static::creating(function (Order $order) {
+            $order->date ??= now()->toDateString();
+        });
+    }
+
     public function customer()
     {
         return $this->belongsTo(Customer::class);