feat: 总会员(包含式)模型、迁移、抢单校验与后台配置

- Huiyuan.is_bundle + club_huiyuan_bundle_include 表
- 购买/到期逻辑不变，抢单时总会员覆盖子会员类型
- dshyhq/clumber 返回 is_bundle 与 included_huiyuan_ids

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

jituan/models.py

@@ -127,6 +127,19 @@ class ClubHuiyuanPrice(QModel):
         unique_together = [['club_id', 'huiyuan_id']]
 
 
+class ClubHuiyuanBundleInclude(QModel):
+    """俱乐部总会员包含的子会员类型（仅 is_bundle 会员使用）。"""
+    club_id = models.CharField(max_length=16, db_index=True)
+    bundle_huiyuan_id = models.CharField(max_length=6, db_index=True, verbose_name='总会员ID')
+    included_huiyuan_id = models.CharField(max_length=6, db_index=True, verbose_name='包含的子会员ID')
+    CreateTime = models.DateTimeField(auto_now_add=True)
+    UpdateTime = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        db_table = 'club_huiyuan_bundle_include'
+        unique_together = [['club_id', 'bundle_huiyuan_id', 'included_huiyuan_id']]
+
+
 class ClubShangpinLeixingConfig(QModel):
     """各俱乐部小程序商品类型上架与图标（全局 ShangpinLeixing 由集团定义）。"""
     club_id = models.CharField(max_length=16, db_index=True)