diff --git a/apps/worker/video_processing/noise_reduction_engine.py b/apps/worker/video_processing/noise_reduction_engine.py
index 58b4771cf..e8db5bb64 100755
--- a/apps/worker/video_processing/noise_reduction_engine.py
+++ b/apps/worker/video_processing/noise_reduction_engine.py
@@ -9,15 +9,21 @@ from __future__ import annotations
 
 import logging
 
+# isort: off
 from packages.domain.noise_reduction_config import (
     NoiseReductionConfig,
+    NoiseReductionLevel,  # noqa: F401
 )
 from packages.domain.noise_reduction_config import (
     apply_noise_reduction_if_needed as _apply_noise_reduction_if_needed_base,
 )
-from packages.domain.noise_reduction_config import build_afftdn_filter as _build_afftdn_filter_base  # noqa: F401 — 向后兼容
+from packages.domain.noise_reduction_config import (
+    build_afftdn_filter as _build_afftdn_filter_base,
+)  # noqa: F401 — 向后兼容
 from packages.domain.noise_reduction_config import build_arnndn_filter as _build_arnndn_filter_base
 
+# isort: on
+
 logger = logging.getLogger(__name__)
 
 
diff --git a/apps/worker/video_processing/sticker_engine.py b/apps/worker/video_processing/sticker_engine.py
index 5d4f941f0..148c88963 100755
--- a/apps/worker/video_processing/sticker_engine.py
+++ b/apps/worker/video_processing/sticker_engine.py
@@ -14,14 +14,20 @@ import logging
 from pathlib import Path
 from typing import Any
 
+# isort: off
 from packages.domain.sticker_config import (
+    POSITION_PRESETS,  # noqa: F401
+    STICKER_CATEGORIES,  # noqa: F401
     ImageStickerConfig,
     StickerOverlayResult,
     TextStickerConfig,
 )
-from packages.domain.sticker_config import get_sticker_categories as _get_sticker_categories_base  # noqa: F401  向后兼容导出
+from packages.domain.sticker_config import (
+    get_sticker_categories as _get_sticker_categories_base,
+)  # noqa: F401  向后兼容导出
 from packages.domain.sticker_config import parse_stickers_from_config as _parse_stickers_base
 from packages.domain.sticker_config import (
+    # isort: on
     resolve_sticker_position,
 )
 
diff --git a/scripts/ci/acr_cleanup.py b/scripts/ci/acr_cleanup.py
index 43a4cd397..8bcbbe17b 100755
--- a/scripts/ci/acr_cleanup.py
+++ b/scripts/ci/acr_cleanup.py
@@ -398,6 +398,7 @@ def cleanup_repo(repo, keep_count, dry_run, protected_tags, pr_sha=None, pr_open
             # 注意：pr tag是pr-<sha>，sha可能属于某个PR
             # 简化策略：收集所有打开PR的commit sha，在白名单里的保留
             print("    模式: Gitea PR状态检查")
+            open_pr_shas = set()
             # 这里做了简化：因为每个PR都查commits太慢，我们用另一种方式
             # 对于PR tag，先尝试匹配PR编号（如果tag名里有编号），否则按时间
             # 实际pr-<sha>没法直接知道PR编号，所以降级为按时间+打开PR的head sha白名单