feat(activity): implement P4 member self-service leave and ticket refund channel

server/src/db/repository.ts

@@ -396,7 +396,7 @@ export class MysqlRepository {
       await conn.query(`
         INSERT INTO finance_records (id, record_no, user_id, type, amount, direction, counterparty, related_id)
         VALUES (?, ?, ?, '成员退席原路退款', ?, 'IN', ?, ?)
-      `, [finId, recordNo, userId, (refundAmount / 100).toFixed(2), `组局 ${id}`, id]);
+      `, [finId, recordNo, userId, (refundAmount / 100).toFixed(2), `用户 ${userId} (组局退款)`, id]);
 
       await conn.commit();
       return {