refactor: remove manual refresh and search controls

tests/test_backup_v2.py

@@ -160,7 +160,8 @@ def test_zip_v2_round_trip_includes_history_exception_and_attachment_bytes(clien
         json={"preflight_token": preflight.json()["preflight_token"], "mode": "replace"},
     )
     assert restored.status_code == 200, restored.text
-    restored_task = client.get("/api/v1/tasks", params={"q": "完整备份任务"}).json()["items"][0]
+    restored_items = client.get("/api/v1/tasks", params={"limit": 100}).json()["items"]
+    restored_task = next(item for item in restored_items if item["title"] == "完整备份任务")
     restored_attachment = client.get(f"/api/v1/tasks/{restored_task['id']}/attachments").json()[0]
     assert client.get(f"/api/v1/attachments/{restored_attachment['id']}").content == attachment_bytes
 
@@ -643,8 +644,9 @@ def test_restore_handles_child_before_parent_task_order(client):
         "/api/v1/backup/restore", json={"preflight_token": token, "mode": "replace"}
     )
     assert restored.status_code == 200, restored.text
-    items = client.get("/api/v1/tasks", params={"q": "parent"}).json()["items"]
-    assert items[0]["subtasks"][0]["title"] == "child"
+    items = client.get("/api/v1/tasks", params={"limit": 100}).json()["items"]
+    restored_parent = next(item for item in items if item["title"] == "parent")
+    assert restored_parent["subtasks"][0]["title"] == "child"
 
 
 def test_replace_restores_quarantined_files_when_database_write_fails(client, tmp_path, monkeypatch):
@@ -682,7 +684,8 @@ def test_replace_restores_quarantined_files_when_database_write_fails(client, tm
         )
 
     assert old_path.read_bytes() == old_bytes
-    assert client.get("/api/v1/tasks", params={"q": "old"}).json()["items"]
+    restored_items = client.get("/api/v1/tasks", params={"limit": 100}).json()["items"]
+    assert any(item["title"] == "old" for item in restored_items)
 
 
 def test_archive_blob_is_never_read_whole(client, tmp_path, monkeypatch):