[loop-cycle-53] refactor: break circular imports between packages (#164) (#193)

src/config.py

@@ -5,6 +5,10 @@ from typing import Literal
 
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
+from datetime import UTC, datetime as _datetime
+
+APP_START_TIME: _datetime = _datetime.now(UTC)
+
 
 class Settings(BaseSettings):
     """Central configuration — all env-var access goes through this class."""