refactor: remove manual refresh and search controls

tests/test_mvp_backend.py

@@ -73,7 +73,7 @@ def test_creating_task_with_recurrence_is_atomic(client):
         json={"title": "缺少日期", "list_id": inbox["id"], "rrule": "FREQ=DAILY"},
     )
     assert rejected.status_code == 422
-    assert client.get("/api/v1/tasks", params={"q": "缺少日期"}).json()["items"] == []
+    assert all(row["title"] != "缺少日期" for row in client.get("/api/v1/tasks").json()["items"])
 
 
 def test_custom_recurrence_rejects_invalid_weekdays_month_days_and_until(client):
@@ -123,7 +123,8 @@ def test_export_and_restore_preserve_task_recurrence(client):
 
     restored = client.post("/api/v1/restore?mode=merge", json=exported)
     assert restored.status_code == 200
-    restored_task = client.get("/api/v1/tasks", params={"q": "每周整理"}).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"] == "每周整理")
     recurrence = client.get(f"/api/v1/tasks/{restored_task['id']}/recurrence").json()
     assert recurrence["rrule"] == "FREQ=WEEKLY"