use sea_orm_migration::prelude::*;

#[derive(DeriveMigrationName)]
pub struct Migration;

#[async_trait::async_trait]
impl MigrationTrait for Migration {
    async fn up(&self, _manager: &SchemaManager) -> Result<(), DbErr> {
        // 占位迁移：原始迁移文件缺失，但已应用。此处为空实现以满足迁移链完整性。
        Ok(())
    }

    async fn down(&self, _manager: &SchemaManager) -> Result<(), DbErr> {
        // 占位迁移，无需回滚实际变更
        Ok(())
    }
}