Merge remote-tracking branch 'origin/milestone-20260327-金币日常优化2.0' into milestone-20260327-金币日常优化3.0

src/main/java/com/example/demo/Mysql/MysqlServiceImpl.java

@@ -920,6 +920,7 @@ public class MysqlServiceImpl implements MysqlService {
             case 7 -> 4; // 其他 → 西南钱包
             case 10 -> 8;
             case 15 -> 3;
+            case 16 -> 6;
             default -> 1;
         };
     }

src/main/java/com/example/demo/serviceImpl/cash/CashRefundServiceImpl.java

@@ -476,6 +476,13 @@ public class CashRefundServiceImpl implements RefundService {
             user.setCurrentPermanentGold(BigDecimal.valueOf(-userGoldRecord.getPermanentGold())); //当前永久金币
             user.setCurrentFreeJune(BigDecimal.valueOf(-userGoldRecord.getFreeJune())); //当前六月免费金币
             user.setCurrentFreeDecember(BigDecimal.valueOf(-userGoldRecord.getFreeDecember())); //当前十二月免费金币
+            User usergold = userMapper.selectUserByJwcode(userGoldRecord.getJwcode());
+            if(usergold.getCurrentFreeJune().add(user.getCurrentFreeJune()).compareTo(BigDecimal.ZERO)<0){
+                throw new RuntimeException("当前六月免费金币不足");
+            }
+            if (usergold.getCurrentFreeDecember().add(user.getCurrentFreeDecember()).compareTo(BigDecimal.ZERO)<0){
+                throw new RuntimeException("当前十二月免费金币不足");
+            }
             auditMapper.updateUserGold(user);
 
 // 钱包更新 - 按原始充值流水 wallet_id 优先级顺序原路退回（1-10，越小优先级越高）