feat(boxing): show work order numbers in boxing views

lib/pages/boxing_detail_page.dart

@@ -19,10 +19,15 @@ class BoxingDetailPage extends StatelessWidget {
           children: [
             const Text('装箱详情'),
             const SizedBox(width: 12),
-            Text(
-              paichanNo,
-              style:
-                  const TextStyle(fontSize: 14, fontWeight: FontWeight.normal),
+            Expanded(
+              child: Text(
+                paichanNo,
+                style: const TextStyle(
+                  fontSize: 14,
+                  fontWeight: FontWeight.normal,
+                ),
+                overflow: TextOverflow.ellipsis,
+              ),
             ),
           ],
         ),
@@ -77,11 +82,29 @@ class BoxingDetailPage extends StatelessWidget {
                 return Padding(
                   padding: const EdgeInsets.symmetric(vertical: 2),
                   child: Row(
-                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                     children: [
-                      Text(item.zongpaiNo, style: const TextStyle(fontSize: 14)),
-                      Text('数量：${item.quantity}',
-                          style: const TextStyle(fontSize: 14)),
+                      Expanded(
+                        flex: 3,
+                        child: Text(
+                          item.zongpaiNo,
+                          style: const TextStyle(fontSize: 14),
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                      ),
+                      const SizedBox(width: 8),
+                      Expanded(
+                        flex: 2,
+                        child: Text(
+                          item.workOrderNo ?? '--',
+                          style: const TextStyle(fontSize: 14),
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                      ),
+                      const SizedBox(width: 8),
+                      Text(
+                        '数量：${item.quantity}',
+                        style: const TextStyle(fontSize: 14),
+                      ),
                     ],
                   ),
                 );

lib/pages/boxing_page.dart

@@ -49,6 +49,7 @@ class _BoxingPageState extends State<BoxingPage> {
 
   // 排产号信息（来自后端查询）
   String? _paichanNo;
+  String? _workOrderNo;
   int? _erpQuantity;
   List<BoxDetailData> _existingBoxes = [];
   int _maxBoxNo = 0;
@@ -129,6 +130,7 @@ class _BoxingPageState extends State<BoxingPage> {
     _phase = _Phase.waiting;
     _zongpaiNo = null;
     _paichanNo = null;
+    _workOrderNo = null;
     _erpQuantity = null;
     _existingBoxes = [];
     _maxBoxNo = 0;
@@ -222,6 +224,7 @@ class _BoxingPageState extends State<BoxingPage> {
     setState(() {
       _zongpaiNo = zongpai;
       _paichanNo = result.paichanNo;
+      _workOrderNo = result.workOrderNo;
       _erpQuantity = result.quantity;
       _existingBoxes = result.existingBoxes;
       _maxBoxNo = result.maxBoxNo;
@@ -363,7 +366,13 @@ class _BoxingPageState extends State<BoxingPage> {
         ..add(
           BoxDetailData(
             boxNo: boxNo,
-            items: [BoxItemData(zongpaiNo: _zongpaiNo!, quantity: quantity)],
+            items: [
+              BoxItemData(
+                zongpaiNo: _zongpaiNo!,
+                workOrderNo: _workOrderNo,
+                quantity: quantity,
+              ),
+            ],
           ),
         );
       _maxBoxNo = _maxBoxNo > boxNo ? _maxBoxNo : boxNo;
@@ -658,27 +667,41 @@ class _BoxingPageState extends State<BoxingPage> {
 
   Widget _buildInfoArea(bool isWaiting, ColorScheme colorScheme) {
     final grey = isWaiting;
+    final paichanText = grey ? '--' : (_paichanNo ?? '--');
+    final workOrderText = grey ? '--' : (_workOrderNo ?? '--');
 
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: [
-        Text(
-          '排产号：',
-          style: TextStyle(
-            fontSize: 13,
-            color: grey ? Colors.grey : Colors.black54,
-          ),
+        Row(
+          children: [
+            Expanded(
+              child: Text(
+                paichanText,
+                style: TextStyle(
+                  fontSize: 20,
+                  fontWeight: FontWeight.w700,
+                  color: grey ? Colors.grey : Colors.black87,
+                ),
+                overflow: TextOverflow.ellipsis,
+              ),
+            ),
+            const SizedBox(width: 12),
+            Expanded(
+              child: Text(
+                workOrderText,
+                textAlign: TextAlign.right,
+                style: TextStyle(
+                  fontSize: 18,
+                  fontWeight: FontWeight.w700,
+                  color: grey ? Colors.grey : Colors.black87,
+                ),
+                overflow: TextOverflow.ellipsis,
+              ),
+            ),
+          ],
         ),
-        const SizedBox(height: 2),
-        Text(
-          _paichanNo ?? '--',
-          style: TextStyle(
-            fontSize: 16,
-            fontWeight: FontWeight.w600,
-            color: grey ? Colors.grey : Colors.black87,
-          ),
-        ),
-        const SizedBox(height: 8),
+        const SizedBox(height: 10),
 
         Row(
           children: [

lib/services/api_service.dart

@@ -33,13 +33,19 @@ class RegistrationResult {
 /// 箱号内单个总排号明细
 class BoxItemData {
   final String zongpaiNo;
+  final String? workOrderNo;
   final int quantity;
 
-  BoxItemData({required this.zongpaiNo, required this.quantity});
+  BoxItemData({
+    required this.zongpaiNo,
+    this.workOrderNo,
+    required this.quantity,
+  });
 
   factory BoxItemData.fromJson(Map<String, dynamic> json) {
     return BoxItemData(
       zongpaiNo: json['zongpai_no'] as String,
+      workOrderNo: json['work_order_no']?.toString(),
       quantity: json['quantity'] as int,
     );
   }
@@ -68,6 +74,7 @@ class BoxInfoResult {
   final String? errorMessage;
   final String? zongpaiNo;
   final String? paichanNo;
+  final String? workOrderNo;
   final int? quantity;
   final List<BoxDetailData> existingBoxes;
   final int maxBoxNo;
@@ -78,6 +85,7 @@ class BoxInfoResult {
     this.errorMessage,
     this.zongpaiNo,
     this.paichanNo,
+    this.workOrderNo,
     this.quantity,
     this.existingBoxes = const [],
     this.maxBoxNo = 0,
@@ -94,6 +102,7 @@ class BoxInfoResult {
       success: true,
       zongpaiNo: json['zongpai_no'] as String?,
       paichanNo: json['paichan_no'] as String?,
+      workOrderNo: json['work_order_no']?.toString(),
       quantity: json['quantity'] as int?,
       existingBoxes: boxes,
       maxBoxNo: json['max_box_no'] as int? ?? 0,