fix(priority): keep readable priority sync details

backend/test_priority_sync.py

@@ -619,6 +619,10 @@ def test_priority_sync_fetches_remote_accounts_and_backfills_info(db_session, mo
                 {"id": "A1", "name": "SmartUp-A1-Name", "priority": 15},
                 {"id": "A2", "name": "SmartUp-A2-Name", "priority": 25},
             ]
+        def get_groups(self, *args, **kwargs):
+            return [
+                {"id": "TG1", "name": "TG1-Readable-Group-Name"}
+            ]
         def update_account(self, account_id, data):
             update_calls.append((account_id, data))
 
@@ -634,7 +638,7 @@ def test_priority_sync_fetches_remote_accounts_and_backfills_info(db_session, mo
     assert res_a1["new_priority"] == 1
     assert res_a1["source_rate"] == 1.0
     assert res_a1["target_group_id"] == "TG1"
-    assert res_a1["target_group_name"] == "TG1"  # fallback to tg_id since target_group_name is not set
+    assert res_a1["target_group_name"] == "TG1-Readable-Group-Name"
 
     res_a2 = next(r for r in results if r["account_id"] == "A2")
     assert res_a2["account_name"] == "SmartUp-A2-Name"
@@ -642,6 +646,10 @@ def test_priority_sync_fetches_remote_accounts_and_backfills_info(db_session, mo
     assert res_a2["new_priority"] == 11
     assert res_a2["source_rate"] == 2.0
 
+    # 验证本地 DB 中行的 imported_target_group_name 被正确更新写入
+    row1 = db_session.query(UpstreamGeneratedKey).filter_by(imported_account_id="A1").first()
+    assert row1.imported_target_group_name == "TG1-Readable-Group-Name"
+
 
 def test_priority_sync_graceful_on_remote_list_failure(db_session, monkeypatch):
     """验证 list_accounts 抛异常时，优先级同步依然成功更新，且各项降级为账号 ID 和未知。"""
@@ -677,4 +685,3 @@ def test_priority_sync_graceful_on_remote_list_failure(db_session, monkeypatch):
     assert res_a1["old_priority"] is None
     assert res_a1["new_priority"] == 1
     assert res_a1["status"] == "success"
-