refactor: unify host threadpool boundary

app/chain/_recognition.py

@@ -7,8 +7,7 @@
 import copy
 from typing import Optional
 
-from fastapi.concurrency import run_in_threadpool
-
+from app.runtime.execution import run_in_threadpool
 from app.adapters.external.server import MoviePilotServerHelper
 from app.application.configuration import get_configured_system_config
 from app.domain.context import MediaInfo, MusicInfo

app/chain/media.py

@@ -3,8 +3,7 @@ from pathlib import Path
 from threading import Lock
 from typing import Any, Iterable, List, Optional, Tuple, Union
 
-from fastapi.concurrency import run_in_threadpool
-
+from app.runtime.execution import run_in_threadpool
 from app.schemas.event import MediaRecognizeConvertEventData as _SchemaMediaRecognizeConvertEventData
 from app.chain import ChainBase
 from app.chain.acoustid import AcoustIdChain

app/chain/search.py

@@ -10,8 +10,7 @@ from typing import AsyncIterator, Any, Dict, Iterable, Tuple
 from typing import List, Optional
 from unicodedata import normalize
 
-from fastapi.concurrency import run_in_threadpool
-
+from app.runtime.execution import run_in_threadpool
 from app.chain import ChainBase
 from app.chain.media import MediaChain
 from app.runtime.config import global_vars