fix: 假单打乱顺序持久化到OrderSequence，2分钟内全用户一致

Co-authored-by: Cursor <cursoragent@cursor.com>

orders/models.py

@@ -1106,6 +1106,11 @@ class FakeGrabOrderShuffleState(QModel):
     IntervalSeconds = models.PositiveIntegerField(
         default=120, verbose_name='打乱间隔秒数（默认2分钟）',
     )
+    OrderSequence = models.JSONField(
+        default=dict, blank=True,
+        verbose_name='各俱乐部+类型已打乱顺序',
+        help_text='形如 {"xq|1": {"last_shuffle_time": "...", "order_ids": ["JD...", ...]}}',
+    )
     UpdateTime = models.DateTimeField(auto_now=True, verbose_name='更新时间')
 
     class Meta: