회기 연속성과 멀티 케이스 계약을 영속화

apps/api/app/test_teacher_dashboard.py

@@ -10,7 +10,6 @@ from fastapi import HTTPException
 from .config import settings
 from .deps import Principal, Role
 from .routes import teacher
-from .session_read_model import MISSING_SESSION_EVALUATION_ERROR
 from .services import state_machine
 from .services.persona import P1
 from .store import InProcSession, TurnRecord
@@ -424,7 +423,11 @@ class TeacherDashboardGrowthTest(unittest.IsolatedAsyncioTestCase):
         self.assertEqual(failed.evaluation_status, "error")
         self.assertFalse(failed.review_ready)
         self.assertEqual(failed.supervisor_state, "평가 실패")
-        self.assertEqual(failed.evaluation_error, "session evaluation timeout after 45s")
+        self.assertEqual(
+            failed.evaluation_error,
+            "AI 평가가 제한 시간 안에 끝나지 않았습니다. 다시 시도할 수 있습니다.",
+        )
+        self.assertNotIn("session evaluation timeout after 45s", response.model_dump_json())
 
     async def test_dashboard_marks_stale_missing_session_evaluation_as_failed(self) -> None:
         principal = _principal()
@@ -468,7 +471,10 @@ class TeacherDashboardGrowthTest(unittest.IsolatedAsyncioTestCase):
         self.assertEqual(failed.evaluation_status, "error")
         self.assertFalse(failed.review_ready)
         self.assertEqual(failed.supervisor_state, "평가 실패")
-        self.assertEqual(failed.evaluation_error, MISSING_SESSION_EVALUATION_ERROR)
+        self.assertEqual(
+            failed.evaluation_error,
+            "회기말 평가 기록이 아직 저장되지 않았습니다. 다시 시도할 수 있습니다.",
+        )
 
     async def test_dashboard_fails_closed_when_safety_alerts_are_not_durable_outside_dev(self) -> None:
         principal = _principal()