style: auto-format with black + isort + prettier [skip ci-format-check]

apps/worker/video_processing/multi_track_mixer_pure.py

@@ -6,7 +6,6 @@
 
 from __future__ import annotations
 
-
 # ── 单轨时间计算 ──────────────────────────────────────────────────────────────
 
 

apps/worker/video_processing/speed_engine.py

@@ -13,7 +13,6 @@
 
 from __future__ import annotations
 
-
 from packages.domain.speed_config import (
     DEFAULT_SPEED,
     SpeedConfig,

tests/unit/domain/test_job.py

@@ -6,7 +6,7 @@ domain 层统一异步任务纯逻辑模块，0 外部依赖。
 
 from __future__ import annotations
 
-from packages.domain.job import Job, JobStatus, JobType, TERMINAL_STATUSES
+from packages.domain.job import TERMINAL_STATUSES, Job, JobStatus, JobType
 
 
 class TestJobType:

tests/unit/domain/test_video_filter_builder.py

@@ -6,7 +6,6 @@ domain 层纯逻辑模块，0 FFmpeg 依赖，快速轻量。
 from __future__ import annotations
 
 import dataclasses
-
 from unittest.mock import MagicMock
 
 import pytest

tests/unit/test_transition_presets.py

@@ -4,7 +4,6 @@ from __future__ import annotations
 
 import dataclasses
 
-
 import pytest
 
 from packages.domain.transition_presets import (