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/screens/products/product_detail_screen.dart

@@ -269,6 +269,10 @@ class _ProductDetailScreenState extends ConsumerState<ProductDetailScreen> {
                 _buildImageSection(p),
                 const SizedBox(height: 20),
                 _buildInfoSection(p),
+                if (p.salePrice != null && p.salePrice! > 0) ...[
+                  const SizedBox(height: 20),
+                  _buildPriceSection(p),
+                ],
                 const SizedBox(height: 20),
                 _buildDescSection(),
                 const SizedBox(height: 20),
@@ -350,7 +354,12 @@ class _ProductDetailScreenState extends ConsumerState<ProductDetailScreen> {
             SizedBox(width: 200, child: row('品牌', p.brand?.isEmpty ?? true ? '-' : p.brand!)),
             SizedBox(width: 200, child: row('单位', p.unit.isEmpty ? '-' : p.unit)),
             SizedBox(width: 200, child: row('进价', p.purchasePrice != null ? '¥${p.purchasePrice!.toStringAsFixed(2)}' : '-')),
-            SizedBox(width: 200, child: row('售价', p.salePrice != null ? '¥${p.salePrice!.toStringAsFixed(2)}' : '-')),
+            if (p.originName?.isNotEmpty ?? false)
+              SizedBox(width: 200, child: row('产地', p.originName!)),
+            if (p.shelfLifeName?.isNotEmpty ?? false)
+              SizedBox(width: 200, child: row('保质期', p.shelfLifeName!)),
+            if (p.storageName?.isNotEmpty ?? false)
+              SizedBox(width: 200, child: row('储存方式', p.storageName!)),
             if (p.barcode?.isNotEmpty ?? false)
               SizedBox(width: 200, child: row('条码', p.barcode!)),
           ],
@@ -359,6 +368,35 @@ class _ProductDetailScreenState extends ConsumerState<ProductDetailScreen> {
     );
   }
 
+  Widget _buildPriceSection(Product p) {
+    final price = p.salePrice!;
+    final priceStr = price % 1 == 0
+        ? price.toInt().toString()
+        : price.toStringAsFixed(2);
+    return Card(
+      elevation: 0,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(6),
+        side: BorderSide(color: AppTheme.border, width: 0.5),
+      ),
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+        child: Row(
+          children: [
+            const Text('建议零售价',
+                style: TextStyle(fontSize: 13, color: AppTheme.textSecondary)),
+            const Spacer(),
+            Text('¥$priceStr',
+                style: const TextStyle(
+                    fontSize: 22,
+                    fontWeight: FontWeight.w700,
+                    color: AppTheme.danger)),
+          ],
+        ),
+      ),
+    );
+  }
+
   Widget _buildDescSection() {
     return Card(
       elevation: 0,