refactor: extract boxing logic into dedicated modules with tests

- boxing_models.dart: add BoxingMode, BoxingPhase, BoxingPageArguments
- boxing_box_mutations.dart: box item add/replace/remove operations
- boxing_calculations.dart: pure calculation helpers (quantities, validation)
- boxing_status_presenter.dart: status bar text/dot determination
- dialogs/cross_paichan_dialog.dart: cross-paichan confirmation dialog
- widgets/boxing_notice_banners.dart: notice banner widgets
- Add unit tests for mutations, calculations, and status presenter

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

lib/pages/boxing_page.dart

@@ -8,37 +8,22 @@ import 'package:pad_scanner/services/code_parser.dart';
 import 'package:pad_scanner/services/api_service.dart';
 import 'package:pad_scanner/services/boxing_context.dart';
 import 'package:pad_scanner/services/feedback_service.dart';
+import 'package:pad_scanner/pages/boxing/boxing_box_mutations.dart'
+    as box_mutations;
+import 'package:pad_scanner/pages/boxing/boxing_calculations.dart'
+    as boxing_calculations;
 import 'package:pad_scanner/pages/boxing/boxing_models.dart';
+import 'package:pad_scanner/pages/boxing/boxing_status_presenter.dart';
+import 'package:pad_scanner/pages/boxing/dialogs/cross_paichan_dialog.dart';
 import 'package:pad_scanner/pages/boxing/widgets/boxing_shared_widgets.dart';
+import 'package:pad_scanner/pages/boxing/widgets/boxing_notice_banners.dart';
 import 'package:pad_scanner/pages/boxing/widgets/multi_code_body.dart';
 import 'package:pad_scanner/pages/boxing/widgets/single_code_body.dart';
 import 'package:pad_scanner/pages/boxing_detail_page.dart';
 import 'package:pad_scanner/widgets/status_bar.dart';
 
-// === 装箱模式 ===
-
-enum BoxingMode {
-  singleCode, // 单码装箱
-  multiCode, // 多码凑箱
-}
-
-class BoxingPageArguments {
-  final BoxingMode initialMode;
-  final List<String> autoScanCodes;
-
-  const BoxingPageArguments({
-    required this.initialMode,
-    required this.autoScanCodes,
-  });
-}
-
-// === 页面阶段 ===
-
-enum _Phase {
-  waiting, // 等待扫码
-  scanned, // 已扫码，显示信息
-  submitted, // 已提交成功
-}
+export 'package:pad_scanner/pages/boxing/boxing_models.dart'
+    show BoxingMode, BoxingPageArguments;
 
 // === 主页面 ===
 
@@ -62,7 +47,7 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
   BoxingMode _mode = BoxingMode.singleCode;
 
   // 阶段
-  _Phase _phase = _Phase.waiting;
+  BoxingPhase _phase = BoxingPhase.waiting;
 
   // 当前总排号
   String? _zongpaiNo;
@@ -221,7 +206,7 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
   }
 
   void _resetState() {
-    _phase = _Phase.waiting;
+    _phase = BoxingPhase.waiting;
     _zongpaiNo = null;
     _paichanNo = null;
     _workOrderNo = null;
@@ -334,7 +319,7 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
       _currentZongpaiBoxes = result.currentZongpaiBoxes;
       _existingBoxes = result.existingBoxes;
       _maxBoxNo = result.maxBoxNo;
-      _phase = _Phase.scanned;
+      _phase = BoxingPhase.scanned;
       _isDuplicateBoxNo = false;
       _editingBox = null;
       _editingAssignedItemId = null;
@@ -469,98 +454,16 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
 
   // === 跨排产号确认对话框 ===
 
-  void _showCrossPaichaDialog() {
+  Future<void> _showCrossPaichaDialog() async {
     final currentPaicha = _lastScannedPaichanNo ?? '--';
     final newPaicha = _paichanNo ?? '--';
-    final dialogFocus = FocusNode();
-    var dismissed = false;
-    var selectedIndex = 0; // 0 = "否" (default), 1 = "是"
-
-    void dismissAsNo() {
-      if (dismissed) return;
-      dismissed = true;
-      Navigator.of(context).pop();
-      _cancelPaichanSwitch();
-    }
-
-    void confirmSwitch() {
-      if (dismissed) return;
-      dismissed = true;
-      Navigator.of(context).pop();
-      _confirmPaichanSwitch();
-    }
-
-    showDialog(
+    final confirmed = await showCrossPaichanDialog(
       context: context,
-      barrierDismissible: false,
-      builder: (ctx) => StatefulBuilder(
-        builder: (ctx, setDialogState) {
-          return KeyboardListener(
-            focusNode: dialogFocus,
-            onKeyEvent: (event) {
-              if (event is! KeyDownEvent) return;
-              if (event.logicalKey == LogicalKeyboardKey.arrowUp) {
-                setDialogState(() => selectedIndex = 0);
-              } else if (event.logicalKey == LogicalKeyboardKey.arrowDown) {
-                setDialogState(() => selectedIndex = 1);
-              } else if (event.logicalKey == LogicalKeyboardKey.enter) {
-                selectedIndex == 0 ? dismissAsNo() : confirmSwitch();
-              } else if (event.logicalKey == LogicalKeyboardKey.escape) {
-                dismissAsNo();
-              }
-            },
-            child: PopScope(
-              canPop: false,
-              onPopInvokedWithResult: (didPop, _) {
-                if (!didPop) dismissAsNo();
-              },
-              child: AlertDialog(
-                backgroundColor: Colors.orange.shade50,
-                title: Row(
-                  children: [
-                    Icon(Icons.warning_amber, color: Colors.orange.shade800),
-                    const SizedBox(width: 8),
-                    Text(
-                      '跨排产号扫描',
-                      style: TextStyle(color: Colors.orange.shade900),
-                    ),
-                  ],
-                ),
-                content: Column(
-                  mainAxisSize: MainAxisSize.min,
-                  crossAxisAlignment: CrossAxisAlignment.stretch,
-                  children: [
-                    Text(
-                      '当前排产号：$currentPaicha\n'
-                      '新排产号：$newPaicha\n\n'
-                      '是否切换到新的排产号？\n\n'
-                      '选择「是」将放弃当前已扫描的所有数据。',
-                      style: const TextStyle(fontSize: 14),
-                    ),
-                    const SizedBox(height: 16),
-                    _dialogOptionBtn(
-                      label: '否',
-                      selected: selectedIndex == 0,
-                      onTap: dismissAsNo,
-                    ),
-                    const SizedBox(height: 8),
-                    _dialogOptionBtn(
-                      label: '是，切换排产号',
-                      selected: selectedIndex == 1,
-                      onTap: confirmSwitch,
-                    ),
-                  ],
-                ),
-              ),
-            ),
-          );
-        },
-      ),
+      currentPaicha: currentPaicha,
+      newPaicha: newPaicha,
     );
-
-    WidgetsBinding.instance.addPostFrameCallback((_) {
-      dialogFocus.requestFocus();
-    });
+    if (!mounted) return;
+    confirmed ? _confirmPaichanSwitch() : _cancelPaichanSwitch();
   }
 
   void _confirmPaichanSwitch() {
@@ -609,50 +512,20 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
       _crossPaichaPending = false;
       _zongpaiNo = null;
       _paichanNo = _lastScannedPaichanNo;
-      _phase = _Phase.waiting;
+      _phase = BoxingPhase.waiting;
     });
   }
 
-  Widget _dialogOptionBtn({
-    required String label,
-    required bool selected,
-    required VoidCallback onTap,
-  }) {
-    return SizedBox(
-      width: double.infinity,
-      height: 40,
-      child: ElevatedButton(
-        onPressed: onTap,
-        style: ElevatedButton.styleFrom(
-          backgroundColor: selected
-              ? Colors.blue.shade700
-              : Colors.grey.shade200,
-          foregroundColor: selected ? Colors.white : Colors.black87,
-          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
-        ),
-        child: Text(
-          label,
-          style: TextStyle(
-            fontWeight: selected ? FontWeight.w800 : FontWeight.w600,
-          ),
-        ),
-      ),
-    );
-  }
-
   // === 重复箱号检测 ===
 
   bool _boxNoIsDuplicate() {
-    final boxNo = int.tryParse(_boxNoController.text);
-    if (boxNo == null) {
-      return false;
-    }
     return switch (_mode) {
       BoxingMode.multiCode => false,
-      BoxingMode.singleCode => _currentZongpaiBoxes.any((b) {
-        if (b.boxNo != boxNo) return false;
-        return _editingBox == null || b.boxItemId != _editingBox!.boxItemId;
-      }),
+      BoxingMode.singleCode => boxing_calculations.singleCodeBoxNoIsDuplicate(
+        boxNoText: _boxNoController.text,
+        currentBoxes: _currentZongpaiBoxes,
+        editingBoxItemId: _editingBox?.boxItemId,
+      ),
     };
   }
 
@@ -663,33 +536,34 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
   // === 提交 ===
 
   int get _packedQuantity {
-    return _currentZongpaiBoxes.fold<int>(
-      0,
-      (sum, item) => sum + item.quantity,
-    );
+    return boxing_calculations.packedQuantity(_currentZongpaiBoxes);
   }
 
   int get _remainingQuantity {
-    final total = _erpQuantity ?? 0;
-    return total - _packedQuantity;
+    return boxing_calculations.remainingQuantity(
+      totalQuantity: _erpQuantity,
+      currentBoxes: _currentZongpaiBoxes,
+    );
   }
 
   bool get _quantityTooHigh {
-    if (_remainingQuantity <= 0) return false;
-    final qty = int.tryParse(_quantityController.text);
-    return qty != null && qty > _remainingQuantity;
+    return boxing_calculations.quantityTooHigh(
+      remainingQuantity: _remainingQuantity,
+      quantityText: _quantityController.text,
+    );
   }
 
   bool get _canSubmit {
-    if (_isSubmitting || _phase != _Phase.scanned) return false;
-    if (_zongpaiNo == null) return false;
-    final boxNo = int.tryParse(_boxNoController.text);
-    final qty = int.tryParse(_quantityController.text);
-    if (boxNo == null || boxNo <= 0 || qty == null || qty <= 0) return false;
-    if (_remainingQuantity <= 0) return false;
-    if (_quantityTooHigh) return false;
-    if (_isDuplicateBoxNo) return false;
-    return true;
+    return boxing_calculations.canSubmitBoxing(
+      isSubmitting: _isSubmitting,
+      phase: _phase,
+      zongpaiNo: _zongpaiNo,
+      boxNoText: _boxNoController.text,
+      quantityText: _quantityController.text,
+      remainingQuantity: _remainingQuantity,
+      quantityTooHigh: _quantityTooHigh,
+      isDuplicateBoxNo: _isDuplicateBoxNo,
+    );
   }
 
   void _submitFromKeyboard() {
@@ -710,36 +584,16 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
   }
 
   int? get _currentManyToOneBoxNo {
-    final boxNo = int.tryParse(_boxNoController.text.trim());
-    if (boxNo == null || boxNo <= 0) return null;
-    return boxNo;
+    return boxing_calculations.currentManyToOneBoxNo(_boxNoController.text);
   }
 
   List<ManyToOnePackedItem> get _visibleManyToOnePackedItems {
-    final boxNo = _currentManyToOneBoxNo;
-    if (boxNo == null) return const [];
-    final byItemId = <int, ManyToOnePackedItem>{};
-    for (final box in _existingBoxes.where((box) => box.boxNo == boxNo)) {
-      for (final item in box.items) {
-        final boxItemId = item.boxItemId;
-        if (boxItemId == null) continue;
-        byItemId[boxItemId] = ManyToOnePackedItem(
-          boxItemId: boxItemId,
-          zongpaiNo: item.zongpaiNo,
-          paichanNo: _paichanNo,
-          workOrderNo: item.workOrderNo,
-          boxNo: boxNo,
-          quantity: item.quantity,
-          totalQuantity: item.totalQuantity,
-        );
-      }
-    }
-    for (final item in _manyToOnePackedItems.where(
-      (item) => item.boxNo == boxNo,
-    )) {
-      byItemId[item.boxItemId] = item;
-    }
-    return byItemId.values.toList(growable: false);
+    return boxing_calculations.visibleManyToOnePackedItems(
+      boxNo: _currentManyToOneBoxNo,
+      existingBoxes: _existingBoxes,
+      packedItems: _manyToOnePackedItems,
+      paichanNo: _paichanNo,
+    );
   }
 
   Future<bool> _submit() async {
@@ -839,7 +693,7 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
           );
         } else {
           setState(() {
-            _phase = _Phase.scanned;
+            _phase = BoxingPhase.scanned;
             _boxNoController.text = (_maxBoxNo + 1).toString();
             _quantityController.text = remaining.toString();
             _quantityController.selection = TextSelection(
@@ -872,7 +726,7 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
               ),
             );
           }
-          _phase = _Phase.waiting;
+          _phase = BoxingPhase.waiting;
           _zongpaiNo = null;
           _editingPackedItemId = null;
           _editingPackedQuantity = '';
@@ -925,62 +779,31 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
     int boxNo,
     int quantity,
   ) {
-    final nextBoxes = <BoxDetailData>[];
-    for (final box in _existingBoxes) {
-      final items = box.items.where((item) {
-        return item.boxItemId != editing.boxItemId;
-      }).toList();
-      if (items.isNotEmpty) {
-        nextBoxes.add(BoxDetailData(boxNo: box.boxNo, items: items));
-      }
-    }
-
-    final targetIndex = nextBoxes.indexWhere((box) => box.boxNo == boxNo);
-    final updatedItem = BoxItemData(
-      boxItemId: editing.boxItemId,
+    final result = box_mutations.replaceExistingBoxItem(
+      existingBoxes: _existingBoxes,
+      editing: editing,
+      boxNo: boxNo,
+      quantity: quantity,
       zongpaiNo: _zongpaiNo!,
       workOrderNo: _workOrderNo,
-      quantity: quantity,
       totalQuantity: _erpQuantity,
     );
-    if (targetIndex >= 0) {
-      final target = nextBoxes[targetIndex];
-      nextBoxes[targetIndex] = BoxDetailData(
-        boxNo: target.boxNo,
-        items: [...target.items, updatedItem],
-      );
-    } else {
-      nextBoxes.add(BoxDetailData(boxNo: boxNo, items: [updatedItem]));
-    }
-    nextBoxes.sort((a, b) => a.boxNo.compareTo(b.boxNo));
-    _existingBoxes = nextBoxes;
-    _maxBoxNo = nextBoxes.fold<int>(
-      0,
-      (max, box) => box.boxNo > max ? box.boxNo : max,
-    );
+    _existingBoxes = result.boxes;
+    _maxBoxNo = result.maxBoxNo;
   }
 
   void _addExistingBoxItem(int boxNo, int quantity, int? boxItemId) {
-    final item = BoxItemData(
+    final result = box_mutations.addExistingBoxItem(
+      existingBoxes: _existingBoxes,
+      boxNo: boxNo,
+      quantity: quantity,
       boxItemId: boxItemId,
       zongpaiNo: _zongpaiNo!,
       workOrderNo: _workOrderNo,
-      quantity: quantity,
       totalQuantity: _erpQuantity,
     );
-    final index = _existingBoxes.indexWhere((box) => box.boxNo == boxNo);
-    if (index < 0) {
-      _existingBoxes = [
-        ..._existingBoxes,
-        BoxDetailData(boxNo: boxNo, items: [item]),
-      ]..sort((a, b) => a.boxNo.compareTo(b.boxNo));
-      return;
-    }
-
-    final next = List<BoxDetailData>.from(_existingBoxes);
-    final box = next[index];
-    next[index] = BoxDetailData(boxNo: box.boxNo, items: [...box.items, item]);
-    _existingBoxes = next;
+    _existingBoxes = result.boxes;
+    _maxBoxNo = result.maxBoxNo;
   }
 
   void _finishManyToOneBox() {
@@ -990,7 +813,7 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
       _editingPackedQuantity = '';
       _deletingPackedItemId = null;
       _zongpaiNo = null;
-      _phase = _Phase.waiting;
+      _phase = BoxingPhase.waiting;
       _quantityController.clear();
       _boxNoController.text = (_maxBoxNo + 1).toString();
       _statusOverrideText = null;
@@ -1016,9 +839,11 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
   }
 
   int _maxAssignedQuantity(CurrentZongpaiBoxData item) {
-    final total = _erpQuantity ?? 0;
-    final packedWithoutItem = _packedQuantity - item.quantity;
-    return total - packedWithoutItem;
+    return boxing_calculations.maxAssignedQuantity(
+      totalQuantity: _erpQuantity,
+      packedQuantity: _packedQuantity,
+      itemQuantity: item.quantity,
+    );
   }
 
   void _refreshSingleCodeNewInput({bool focusQuantity = true}) {
@@ -1246,39 +1071,14 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
     int boxNo,
     int quantity,
   ) {
-    final nextBoxes = <BoxDetailData>[];
-    for (final box in _existingBoxes) {
-      final items = box.items.where((boxItem) {
-        return boxItem.boxItemId != item.boxItemId;
-      }).toList();
-      if (items.isNotEmpty) {
-        nextBoxes.add(BoxDetailData(boxNo: box.boxNo, items: items));
-      }
-    }
-
-    final updatedItem = BoxItemData(
-      boxItemId: item.boxItemId,
-      zongpaiNo: item.zongpaiNo,
-      workOrderNo: item.workOrderNo,
+    final result = box_mutations.replaceExistingPackedItem(
+      existingBoxes: _existingBoxes,
+      item: item,
+      boxNo: boxNo,
       quantity: quantity,
-      totalQuantity: item.totalQuantity,
-    );
-    final targetIndex = nextBoxes.indexWhere((box) => box.boxNo == boxNo);
-    if (targetIndex >= 0) {
-      final target = nextBoxes[targetIndex];
-      nextBoxes[targetIndex] = BoxDetailData(
-        boxNo: target.boxNo,
-        items: [...target.items, updatedItem],
-      );
-    } else {
-      nextBoxes.add(BoxDetailData(boxNo: boxNo, items: [updatedItem]));
-    }
-    nextBoxes.sort((a, b) => a.boxNo.compareTo(b.boxNo));
-    _existingBoxes = nextBoxes;
-    _maxBoxNo = nextBoxes.fold<int>(
-      0,
-      (max, box) => box.boxNo > max ? box.boxNo : max,
     );
+    _existingBoxes = result.boxes;
+    _maxBoxNo = result.maxBoxNo;
   }
 
   Future<void> _deletePackedItem(ManyToOnePackedItem item) async {
@@ -1331,20 +1131,12 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
   }
 
   void _removeExistingBoxItem(int boxItemId) {
-    final nextBoxes = <BoxDetailData>[];
-    for (final box in _existingBoxes) {
-      final items = box.items
-          .where((item) => item.boxItemId != boxItemId)
-          .toList();
-      if (items.isNotEmpty) {
-        nextBoxes.add(BoxDetailData(boxNo: box.boxNo, items: items));
-      }
-    }
-    _existingBoxes = nextBoxes;
-    _maxBoxNo = nextBoxes.fold<int>(
-      0,
-      (max, box) => box.boxNo > max ? box.boxNo : max,
+    final result = box_mutations.removeExistingBoxItem(
+      existingBoxes: _existingBoxes,
+      boxItemId: boxItemId,
     );
+    _existingBoxes = result.boxes;
+    _maxBoxNo = result.maxBoxNo;
   }
 
   // === Status bar management ===
@@ -1392,69 +1184,22 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
   // === 状态文字 ===
 
   void _updateBaseStatus() {
-    if (_isAutoProcessing) {
-      _statusDot = StatusDotColor.orange;
-      _statusText = '正在同步转运数据...';
-      return;
-    }
-    if (_isSubmitting) {
-      _statusDot = StatusDotColor.orange;
-      _statusText = '正在提交…';
-      return;
-    }
-    if (_isDuplicateBoxNo && _phase == _Phase.scanned) {
-      _statusDot = StatusDotColor.amber;
-      _statusText = '箱号 ${_boxNoController.text} 已存在，请重新输入';
-      return;
-    }
-    if (_quantityTooHigh && _phase == _Phase.scanned) {
-      _statusDot = StatusDotColor.red;
-      _statusText = '超出可装数量上限';
-      return;
-    }
-    if (_editingAssignedItemId != null) {
-      _statusDot = StatusDotColor.amber;
-      _statusText = '正在编辑已分配记录';
-      return;
-    }
-    if (_deletingAssignedItemId != null) {
-      _statusDot = StatusDotColor.red;
-      _statusText = '请确认是否删除该箱记录';
-      return;
-    }
-    if (_paichanSwitchNotice != null) {
-      _statusDot = StatusDotColor.blue;
-      _statusText = '排产号已切换，箱号已重置';
-      return;
-    }
-    switch (_phase) {
-      case _Phase.waiting:
-        _statusDot = StatusDotColor.blue;
-        if (_mode == BoxingMode.multiCode &&
-            _visibleManyToOnePackedItems.isNotEmpty) {
-          _statusText = '请继续扫码或完成本箱';
-        } else {
-          _statusText = '等待扫码';
-        }
-      case _Phase.scanned:
-        _statusDot = StatusDotColor.blue;
-        if (_remainingQuantity <= 0) {
-          _statusDot = StatusDotColor.red;
-          _statusText = '该总排号已全部装箱完毕';
-          return;
-        }
-        _statusText = _mode == BoxingMode.multiCode
-            ? '数量已填入，请确认或修改'
-            : '数量已填入，请确认或修改';
-      case _Phase.submitted:
-        _statusDot = StatusDotColor.green;
-        switch (_mode) {
-          case BoxingMode.singleCode:
-            _statusText = '装箱成功，可继续扫码';
-          case BoxingMode.multiCode:
-            _statusText = '请扫描下一个总排号';
-        }
-    }
+    final status = boxingStatusFor(
+      isAutoProcessing: _isAutoProcessing,
+      isSubmitting: _isSubmitting,
+      isDuplicateBoxNo: _isDuplicateBoxNo,
+      quantityTooHigh: _quantityTooHigh,
+      isEditingAssigned: _editingAssignedItemId != null,
+      isDeletingAssigned: _deletingAssignedItemId != null,
+      hasPaichanSwitchNotice: _paichanSwitchNotice != null,
+      phase: _phase,
+      isMultiCode: _mode == BoxingMode.multiCode,
+      hasVisibleManyToOneItems: _visibleManyToOnePackedItems.isNotEmpty,
+      remainingQuantity: _remainingQuantity,
+      boxNoText: _boxNoController.text,
+    );
+    _statusDot = status.dot;
+    _statusText = status.text;
   }
 
   // === Build ===
@@ -1487,12 +1232,25 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
         ),
         body: Column(
           children: [
-            ..._buildNoticeBanners(),
+            BoxingNoticeBanners(
+              isAutoProcessing: _isAutoProcessing,
+              autoWarnings: _autoWarnings,
+              paichanSwitchNotice: _paichanSwitchNotice,
+              isDuplicateBoxNo: _isDuplicateBoxNo,
+              quantityTooHigh: _quantityTooHigh,
+              phase: _phase,
+              boxNoText: _boxNoController.text,
+              remainingQuantity: _remainingQuantity,
+              zongpaiNo: _zongpaiNo,
+              completedJumpBoxNo: _completedJumpBoxNo,
+              onJumpToCompletedBox: _jumpToCompletedBox,
+            ),
 
             Expanded(
               child: _mode == BoxingMode.multiCode
                   ? MultiCodeBody(
-                      hasScan: _zongpaiNo != null && _phase == _Phase.scanned,
+                      hasScan:
+                          _zongpaiNo != null && _phase == BoxingPhase.scanned,
                       zongpaiNo: _zongpaiNo,
                       paichanNo: _paichanNo,
                       workOrderNo: _workOrderNo,
@@ -1532,9 +1290,10 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
                           setState(() => _deletingPackedItemId = null),
                     )
                   : SingleCodeBody(
-                      isWaiting: _phase == _Phase.waiting && _zongpaiNo == null,
+                      isWaiting:
+                          _phase == BoxingPhase.waiting && _zongpaiNo == null,
                       isFinished:
-                          _phase == _Phase.scanned &&
+                          _phase == BoxingPhase.scanned &&
                           _zongpaiNo != null &&
                           _remainingQuantity <= 0,
                       zongpaiNo: _zongpaiNo,
@@ -1586,139 +1345,4 @@ class _BoxingPageState extends State<BoxingPage> with WidgetsBindingObserver {
       ),
     );
   }
-
-  List<Widget> _buildNoticeBanners() {
-    final banners = <Widget>[];
-    if (_isAutoProcessing) {
-      banners.add(
-        _noticeBanner(
-          icon: SizedBox(
-            width: 12,
-            height: 12,
-            child: CircularProgressIndicator(
-              strokeWidth: 1.5,
-              color: Colors.orange.shade700,
-            ),
-          ),
-          text: '正在同步转运数据...',
-          background: Colors.orange.shade50,
-          foreground: Colors.orange.shade900,
-          border: Colors.orange.shade100,
-        ),
-      );
-    }
-    if (_autoWarnings.isNotEmpty) {
-      banners.add(
-        _noticeBanner(
-          icon: Icon(
-            Icons.warning_amber,
-            size: 14,
-            color: Colors.amber.shade900,
-          ),
-          text: _autoWarnings.join('；'),
-          background: Colors.amber.shade100,
-          foreground: Colors.amber.shade900,
-          border: Colors.amber.shade200,
-        ),
-      );
-    }
-    if (_paichanSwitchNotice != null) {
-      banners.add(
-        _noticeBanner(
-          icon: Icon(Icons.info_outline, size: 14, color: Colors.blue.shade900),
-          text: _paichanSwitchNotice!,
-          background: Colors.blue.shade50,
-          foreground: Colors.blue.shade900,
-          border: Colors.blue.shade100,
-        ),
-      );
-    }
-    if (_isDuplicateBoxNo && _phase == _Phase.scanned) {
-      banners.add(
-        _noticeBanner(
-          icon: Icon(
-            Icons.warning_amber,
-            size: 14,
-            color: Colors.amber.shade900,
-          ),
-          text: '箱号 ${_boxNoController.text} 已存在，请重新输入',
-          background: Colors.amber.shade100,
-          foreground: Colors.amber.shade900,
-          border: Colors.amber.shade200,
-        ),
-      );
-    }
-    if (_quantityTooHigh && _phase == _Phase.scanned) {
-      banners.add(
-        _noticeBanner(
-          icon: Icon(Icons.close, size: 14, color: Colors.red.shade800),
-          text: '超出可装数量上限（最多可装 $_remainingQuantity 件）',
-          background: Colors.red.shade50,
-          foreground: Colors.red.shade800,
-          border: Colors.red.shade100,
-        ),
-      );
-    }
-    if (_phase == _Phase.scanned &&
-        _zongpaiNo != null &&
-        _remainingQuantity <= 0) {
-      final jumpBoxNo = _completedJumpBoxNo;
-      if (jumpBoxNo != null) {
-        banners.add(
-          GestureDetector(
-            onTap: _jumpToCompletedBox,
-            behavior: HitTestBehavior.opaque,
-            child: _noticeBanner(
-              icon: Icon(Icons.warning, size: 14, color: Colors.amber.shade800),
-              text: '${_zongpaiNo!} 已完成装箱。(P4跳转所在箱号)',
-              background: Colors.amber.shade50,
-              foreground: Colors.amber.shade800,
-              border: Colors.amber.shade200,
-            ),
-          ),
-        );
-      } else {
-        banners.add(
-          _noticeBanner(
-            icon: Icon(Icons.warning, size: 14, color: Colors.red.shade800),
-            text: '${_zongpaiNo!} 已全部装箱完毕，无需操作',
-            background: Colors.red.shade50,
-            foreground: Colors.red.shade800,
-            border: Colors.red.shade100,
-          ),
-        );
-      }
-    }
-    return banners;
-  }
-
-  Widget _noticeBanner({
-    required Widget icon,
-    required String text,
-    required Color background,
-    required Color foreground,
-    required Color border,
-  }) {
-    return Container(
-      width: double.infinity,
-      padding: const EdgeInsets.symmetric(vertical: 6, horizontal: 12),
-      decoration: BoxDecoration(
-        color: background,
-        border: Border(bottom: BorderSide(color: border)),
-      ),
-      child: Row(
-        children: [
-          icon,
-          const SizedBox(width: 6),
-          Expanded(
-            child: Text(
-              text,
-              style: TextStyle(fontSize: 12, color: foreground),
-              overflow: TextOverflow.ellipsis,
-            ),
-          ),
-        ],
-      ),
-    );
-  }
 }