From 5e18f7076a110bb8cb9b154753bd6a83bcd5c189 Mon Sep 17 00:00:00 2001
From: jxxghp <jxxghp@gmail.com>
Date: Sat, 17 Oct 2026 07:30:40 +0800
Subject: [PATCH] fix(types): type database backup backend selection

---
 app/startup/composition/database.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/app/startup/composition/database.py b/app/startup/composition/database.py
index badeb912d..8aa840b21 100644
--- a/app/startup/composition/database.py
+++ b/app/startup/composition/database.py
@@ -9,7 +9,11 @@ from app.adapters.system.backup.database import (
     SQLiteBackupBackend,
 )
 from app.adapters.system.backup.files import BackupFiles
-from app.application.backup import BackupPolicy, DatabaseBackupService
+from app.application.backup import (
+    BackupPolicy,
+    DatabaseBackupBackend,
+    DatabaseBackupService,
+)
 from app.application.database import (
     DatabaseGovernance,
     DatabaseHealthService,
@@ -195,6 +199,7 @@ def build_database_governance() -> DatabaseGovernance:
     """以缓存同步引擎为事实源构造一个完整数据库治理门面。"""
     engine = get_engine()
     dialect = engine.dialect.name
+    backup_backend: DatabaseBackupBackend
     if dialect == "sqlite":
         backup_backend = SQLiteBackupBackend(engine)
     elif dialect == "postgresql":