fix(supervisor): multi-turn follow-up turn handoff + savefig nesting#14
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S-G 시나리오(같은 thread 2번째 메시지에서 동일 csv 재사용 차트 추가) 실패
원인 4건을 한 묶음으로 fix.
1) LLMRouter parse-failure 1회 retry + raw error JSON salvage (plan §4.0.5)
- decide_route가 첫 호출 ValueError 시 즉시 fallback FINISH로 종료하던
문제. 1회 재시도 + 그래도 실패 시 ValidationError 메시지에 박힌
RouterDecision JSON 추출하여 복원. test_llm_router.py +2 cases.
2) head supervisor _max_same_team_streak를 current-turn-only로 필터
- 멀티 turn에서 누적된 head→team 카운트로 인해 turn 2 첫 호출부터
redirect 5/2 safeguard 발동. route_history를 가장 최근 head
status="completed" 이후로 슬라이스.
3) team supervisor dispatch count도 current-turn 재계산
- shared_context의 _dispatch_count는 turn 누적 → follow-up turn에서
첫 worker 호출도 6/5 ceiling hit. route_history 슬라이스로 재계산.
4) team worker history note를 prev/current turn 분리 + finalizer
경유 head도 turn 종료로 status="completed" 마킹
- "이전 turn은 이미 완료" + "이번 turn은 아직 미시작" 컨텍스트를
team supervisor LLM에 명확히 전달. finalizer 경로도 route entry
status="completed"로 boundary 신호.
5) matplotlib savefig monkey-patch nesting 차단
- matplotlib.pyplot은 process-wide singleton이라 매 turn 새 wrapper가
이전 wrapper 위에 nesting되어 stale artifact_dir로 path rewriting.
_plt._orchagent_real_savefig에 진짜 savefig를 1회 보존하고 매 turn
그 reference로 fresh wrap.
E2E (dong, playwright) S-G:
- turn 1: region별_revenue_합계_막대차트.png ✅
- turn 2: product별_units_sold_합계_막대차트.png ✅ (같은 csv 재사용)
pytest 316 → 319 PASS (+3 retry/salvage tests), 회귀 0.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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This was referenced May 22, 2026
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Summary
S-G 시나리오(같은 thread 2번째 메시지 동일 csv 재사용 차트 추가) 실패의 4가지 원인을 일괄 fix.
Fixes
_max_same_team_streakcurrent-turn only 슬라이싱 — multi-turn redirect 5/2 false positive 차단status="completed"(finalizer 경로 포함) → boundary 신호 명확_plt._orchagent_real_savefig에 진짜 savefig 1회 보존, fresh wrapVerification
region별_revenue_합계_막대차트.png✅product별_units_sold_합계_막대차트.png✅🤖 Generated with Claude Code