lint: fix all ruff errorrs

src/app/cli.py

@@ -45,7 +45,6 @@ def main(argv: list[str] | None = None) -> int:
             print(f"START: {vid} → {target}")
 
     async def on_completed(payload):
-        pid = payload.get("playlist_id")
         vid = payload.get("video_id")
         target = payload.get("target")
         print(f"OK: {vid} → {target}")

src/app/config/settings.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 import json
 import os
 from pathlib import Path
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, List
 
 
 def _default_ffmpeg_path() -> str:

src/app/core/sync/filesystem.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from pathlib import Path
-from typing import Iterable, List, Sequence
+from typing import List, Sequence
 
 from ..models import FilesystemEntry
 

src/app/core/utils/naming.py

@@ -1,8 +1,5 @@
 from __future__ import annotations
 
-from dataclasses import dataclass
-
-
 ILLEGAL_CHARS = '<>:"/\\|?*'
 
 

src/app/gui/runner.py

@@ -4,7 +4,7 @@ import asyncio
 import threading
 from dataclasses import dataclass
 from pathlib import Path
-from typing import Any, Dict, Optional
+from typing import Any, Dict
 
 from PySide6 import QtCore
 

tests/test_event_surface.py

@@ -2,7 +2,6 @@ from __future__ import annotations
 
 import asyncio
 import sys
-from pathlib import Path
 
 from app.core.download.downloader import Downloader
 from app.core.download.queue_manager import DownloadJob