세션 계약과 메모리 경계 보강

apps/api/app/turn_runtime.py

@@ -14,26 +14,9 @@ from . import db, session_persistence
 from .deps import Principal
 from .runtime_policy import require_runtime_fallback_allowed, runtime_fallback_allowed
 from .services import guardrail, orchestrator, state_machine
+from .stage_contract import stage_label
 from .store import InProcSession, TurnRecord, store
 
-_STAGE_LABELS = {
-    "RAPPORT": "라포",
-    "EXPLORE": "탐색",
-    "INTERVENE": "개입",
-    "CLOSE": "정리",
-    "rapport": "라포",
-    "explore": "탐색",
-    "intervene": "개입",
-    "close": "정리",
-}
-
-
-def stage_label(stage: object) -> str:
-    """Stage enum과 문자열 값을 같은 한글 라벨로 정규화한다."""
-    name = getattr(stage, "name", "")
-    raw = str(getattr(stage, "value", stage))
-    return _STAGE_LABELS.get(name) or _STAGE_LABELS.get(raw) or raw
-
 
 class SessionAccessError(str, Enum):
     NOT_FOUND = "not_found"