feat:餐段设置

lib/common/models/page/reservation_menu_page_models.dart

@@ -104,6 +104,7 @@ class ReservationQueryPagePreferences {
     this.nameMaskEnabled = true,
     this.verificationEnabled = false,
     this.quickVerificationEnabled = false,
+    this.allowManualMealPeriodChange = true,
     this.selectedMealSlot = ReservationMealSlot.morning,
     this.verificationDateScope = ReservationVerificationDateScope.today,
   });
@@ -117,6 +118,7 @@ class ReservationQueryPagePreferences {
     nameMaskEnabled: true,
     verificationEnabled: false,
     quickVerificationEnabled: false,
+    allowManualMealPeriodChange: true,
     selectedMealSlot: ReservationMealSlot.morning,
     verificationDateScope: ReservationVerificationDateScope.today,
   );
@@ -144,6 +146,9 @@ class ReservationQueryPagePreferences {
   /// 识别查询成功后是否直接打开今天预选餐段的核销弹框，默认关闭以保持旧终端流程。
   final bool quickVerificationEnabled;
 
+  /// 是否允许操作员在查询菜单主动修改餐段；关闭后严格按餐段配置时间自动切换。
+  final bool allowManualMealPeriodChange;
+
   /// 查询菜单最近一次选中的餐段，旧终端未保存时默认早餐。
   final ReservationMealSlot selectedMealSlot;