feat(backend): 会员开通/续费/赠送时发放JOIN会员券(试用除外)

cfc-backend/src/main/java/com/etotem/cfc/service/MembershipService.java

@@ -409,6 +409,13 @@ public class MembershipService implements MembershipServiceInterface {
             upgradeRecord.setCreatedAt(new Date());
             memberUpgradeRecordMapper.insert(upgradeRecord);
 
+            // 发放JOIN会员券（按等级匹配grantType=JOIN的券模板）
+            try {
+                couponService.grantJoinCoupons(adminUserId, order.getLevelCode(), order.getOrderNo());
+            } catch (Exception e) {
+                log.error("发放JOIN会员券异常: userId={}, levelCode={}", adminUserId, order.getLevelCode(), e);
+            }
+
             // 结算佣金（L1+L2）
             commissionService.settleTwoLevel(
                     order.getId(),
@@ -644,6 +651,12 @@ public class MembershipService implements MembershipServiceInterface {
         record.setExpireTime(expireTime);
         record.setCreatedAt(new Date());
         memberUpgradeRecordMapper.insert(record);
+        // 发放JOIN会员券（赠送会员同样享有加入赠券）
+        try {
+            couponService.grantJoinCoupons(adminUserId, levelCode, sourceOrderNo);
+        } catch (Exception e) {
+            log.error("发放JOIN会员券异常(赠送): userId={}, levelCode={}", adminUserId, levelCode, e);
+        }
         return true;
     }