feat: 入库单/商品详情展示产地保质期储存方式，商品详情显示建议零售价

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

client/lib/models/stock_in.dart

@@ -12,6 +12,9 @@ class StockInItem {
   final String? productSeries;
   final String? productSpec;
   final String? productUnit;
+  final String? productOrigin;
+  final String? productShelfLife;
+  final String? productStorage;
 
   const StockInItem({
     this.orderId,
@@ -26,6 +29,9 @@ class StockInItem {
     this.productSeries,
     this.productSpec,
     this.productUnit,
+    this.productOrigin,
+    this.productShelfLife,
+    this.productStorage,
   });
 
   factory StockInItem.fromJson(Map<String, dynamic> json) => StockInItem(
@@ -43,6 +49,12 @@ class StockInItem {
         productSeries: (json['product'] as Map<String, dynamic>?)?['series'] as String?,
         productSpec: (json['product'] as Map<String, dynamic>?)?['spec'] as String?,
         productUnit: (json['product'] as Map<String, dynamic>?)?['unit'] as String?,
+        productOrigin: ((json['product'] as Map<String, dynamic>?)?['origin']
+            as Map<String, dynamic>?)?['name'] as String?,
+        productShelfLife: ((json['product'] as Map<String, dynamic>?)?['shelf_life']
+            as Map<String, dynamic>?)?['name'] as String?,
+        productStorage: ((json['product'] as Map<String, dynamic>?)?['storage']
+            as Map<String, dynamic>?)?['name'] as String?,
       );
 
   Map<String, dynamic> toJson() => {