chore: snapshot in-progress question-gen work before preflight fixes

tests/unit/test_repair_progress.py

@@ -1,4 +1,5 @@
 """修复管线断点续跑 progress 管理测试。"""
+
 from __future__ import annotations
 
 import asyncio
@@ -10,6 +11,7 @@ import pytest
 def test_load_progress_missing_file(tmp_path):
     """progress 文件不存在时返回空集合。"""
     from tools.repair_trees import load_progress
+
     result = load_progress(tmp_path / "nonexistent.json")
     assert result == set()
 
@@ -17,6 +19,7 @@ def test_load_progress_missing_file(tmp_path):
 def test_load_progress_valid_file(tmp_path):
     """正常读取已有 progress 文件。"""
     from tools.repair_trees import load_progress
+
     path = tmp_path / "progress.json"
     path.write_text(json.dumps({"finished_video_ids": ["vid_a", "vid_b"]}))
     result = load_progress(path)
@@ -26,6 +29,7 @@ def test_load_progress_valid_file(tmp_path):
 def test_load_progress_corrupted_file(tmp_path):
     """损坏的 JSON 文件返回空集合（不抛异常）。"""
     from tools.repair_trees import load_progress
+
     path = tmp_path / "progress.json"
     path.write_text("{invalid json")
     result = load_progress(path)
@@ -36,6 +40,7 @@ def test_load_progress_corrupted_file(tmp_path):
 async def test_save_progress_atomic(tmp_path):
     """save_progress 原子写入，并发调用不丢失更新。"""
     from tools.repair_trees import save_progress
+
     path = tmp_path / "progress.json"
     lock = asyncio.Lock()
     await save_progress(path, lock, "vid_a")
@@ -48,6 +53,7 @@ async def test_save_progress_atomic(tmp_path):
 async def test_save_progress_concurrent(tmp_path):
     """16 路并发 save_progress 不丢失更新。"""
     from tools.repair_trees import save_progress
+
     path = tmp_path / "progress.json"
     lock = asyncio.Lock()
     tasks = [save_progress(path, lock, f"vid_{i}") for i in range(16)]
@@ -59,6 +65,7 @@ async def test_save_progress_concurrent(tmp_path):
 def test_should_skip_finished():
     """已在 finished 集合中的视频应跳过。"""
     from tools.repair_trees import should_skip_video
+
     finished = {"vid_a", "vid_b"}
     assert should_skip_video("vid_a", finished, reaggregate_all=False) is True
     assert should_skip_video("vid_c", finished, reaggregate_all=False) is False
@@ -67,5 +74,6 @@ def test_should_skip_finished():
 def test_should_skip_reaggregate_all_forces_rerun():
     """--reaggregate-all 标志强制不跳过。"""
     from tools.repair_trees import should_skip_video
+
     finished = {"vid_a"}
     assert should_skip_video("vid_a", finished, reaggregate_all=True) is False