add auth, format

lib/features/orders/domain/entities/invoice.dart

@@ -15,7 +15,7 @@ enum InvoiceType {
   creditNote,
 
   /// Debit note
-  debitNote;
+  debitNote,
 }
 
 /// Invoice status enum
@@ -166,8 +166,7 @@ class Invoice {
       (!isPaid && DateTime.now().isAfter(dueDate));
 
   /// Check if invoice is partially paid
-  bool get isPartiallyPaid =>
-      amountPaid > 0 && amountPaid < totalAmount;
+  bool get isPartiallyPaid => amountPaid > 0 && amountPaid < totalAmount;
 
   /// Get payment percentage
   double get paymentPercentage {

lib/features/orders/domain/entities/order_item.dart

@@ -50,8 +50,7 @@ class OrderItem {
   double get subtotalBeforeDiscount => quantity * unitPrice;
 
   /// Calculate discount amount
-  double get discountAmount =>
-      subtotalBeforeDiscount * (discountPercent / 100);
+  double get discountAmount => subtotalBeforeDiscount * (discountPercent / 100);
 
   /// Calculate subtotal after discount (for verification)
   double get calculatedSubtotal => subtotalBeforeDiscount - discountAmount;