Правки

src/app_runtime/contracts/trace.py

@@ -3,7 +3,10 @@ from __future__ import annotations
 from abc import ABC, abstractmethod
 from dataclasses import dataclass, field
 from datetime import datetime, timezone
-from typing import Any, Protocol
+from typing import Any, Literal, Protocol
+
+
+TraceLevel = Literal["INFO", "WARNING", "ERROR"]
 
 
 def utc_now() -> datetime:
@@ -44,7 +47,7 @@ class TraceLogMessage:
     step: str
     status: str
     message: str
-    level: str
+    level: TraceLevel
     event_time: datetime = field(default_factory=utc_now)
     attrs: dict[str, Any] = field(default_factory=dict)