diff --git a/app/workers/classify_worker.py b/app/workers/classify_worker.py
index bb28943..f8be607 100644
--- a/app/workers/classify_worker.py
+++ b/app/workers/classify_worker.py
@@ -479,8 +479,11 @@ async def _apply_triage_result(
     # enqueue deep_summary
     if escalate:
         try:
+            # PR-A envelope.ValidFromStage 기준 — P3a 에서 에스컬레이션은 'summarize_short'.
+            # 내부 task 이름 'summary_triage' 는 analyze_events.prompt_version 에만 쓰고,
+            # envelope.from_stage 는 PR-A 가 정의한 enum 값을 따른다.
             envelope = EscalationEnvelope(
-                from_stage="summary_triage",
+                from_stage="summarize_short",
                 escalation_reasons=tuple([escalation_reason] if escalation_reason else []),
                 risk_flags=tuple(routing_decision.risk_flags) if routing_decision
                             else tuple(triage_out.risk_flags),