init

backend/migration/src/m20220101_000004_create_permissions.rs

@@ -0,0 +1,17 @@
+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(())
+    }
+}