feat: implement tweakable utility workers concurrency, instead of hard-coded value set to 5

app.py

@@ -51,7 +51,6 @@ if _umask_value:
         # Defer logging setup; avoid failing on invalid UMASK
         pass
 
-
 # Import and initialize routes (this will start the watch manager)
 from routes.auth.credentials import router as credentials_router  # noqa: E402
 from routes.auth.auth import router as auth_router  # noqa: E402
@@ -65,14 +64,8 @@ from routes.core.history import router as history_router  # noqa: E402
 from routes.system.progress import router as prgs_router  # noqa: E402
 from routes.system.config import router as config_router  # noqa: E402
 
-
-# Import Celery configuration and manager
 from routes.utils.celery_config import REDIS_URL  # noqa: E402
 
-# Import authentication system
-
-# Import watch manager controls (start/stop) without triggering side effects
-
 
 # Configure application-wide logging
 def setup_logging():