feat(safety-sell): dcy-017 워치독 소유권 가시화 — snapshot 상태 + 발동 로깅 (BAT-021)

전략 이탈로 슬롯이 내부 청산 루틴(워치독) 소유로 넘어간 상태가 무성이라
운영자가 인지할 수 없던 문제(issue #12)를 가시화한다.

거버넌스: 전부 change-req (신규 REQ 없음, dcy-017 OQ-3; Redis 미채택).
- REQ-034/021: WatchdogStore.last_seen + snapshot RPC 응답에 holding 슬롯
  워치독 상태(expired/last_seen) read-only 동봉(best-effort)
- REQ-032: trex-core slots 가 expired 슬롯을 WATCHDOG-OWNED(전략 이탈) 표시
- REQ-037/038/039: safety-sell 워치독 소유 진입(WARN)/이탈(INFO) + 발동
  (forced_close·stop_loss=WARN, take_profit·market_close=INFO) 로그 +
  in-process 카운터(SafetySellService.counters), 구조화 필드(slot_id/
  portfolio_id/reason/phase/instance_key). per-tick 스킵은 카운터만
- REQ-042: runtime-flows/interface-contract 정합

best-effort 격리(NFR-1): 모든 가시화는 예외 격리 — 워치독 판정·청산 불변.
dcy-016 억제 읽기로 관측이 워치독을 리셋하지 않음(비침습).

검증: 단위 335 passed/34 skipped, 인프라 게이트(PG+RabbitMQ) 369 passed, ruff clean.
신규 test_safety_sell_visibility(6) + snapshot watchdog(1) + CLI(1). BAT-021 rc.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/srs/Integration/req-021_messaging-topology-and-contract-mapping.md

@@ -222,3 +222,43 @@
 #### Validation Plan
 
 - BAT-020: 기본 요청 touch / operator 요청 suppress 단위(caplog/recorder).
+
+### CHG-20260608-03
+
+- Date: 2026-06-08
+- Author: Justin Ko
+
+#### Change Summary
+
+- (change-req, dcy-017/REQ-034 연계) snapshot RPC 응답에 `watchdog` 필드(holding 슬롯 `{slot_id, portfolio_id, symbol, expired, last_seen}` 배열) 추가(best-effort, 실패 시 생략). 메시지 계약 확장. BAT-021 재구현·재검증 완료 → Implemented 유지.
+
+#### Intent
+
+- 워치독 소유 상태를 운영자 CLI 가 관측할 수 있도록 스냅샷 응답 계약에 read-only 필드 정식화.
+
+#### Acceptance Criteria Delta
+
+- Added:
+  - snapshot 응답 optional `watchdog[]` 필드(read-only).
+
+#### Impacted Area Delta
+
+- Modules: `trex_core/application/messaging_handlers.py`(_attach_watchdog)
+- Docs: `docs/interface-contract.md`
+- Tests: tests/application/test_messaging_snapshot_consumer.py
+
+#### Delivery Trace Delta
+
+- Batches: BAT-021
+- Releases: none
+
+#### Revalidation Impact
+
+- Reverification Needed: yes (BAT-021 에서 완료)
+- Existing Implementation Invalidated: no (additive 필드)
+- Status Recommendation: Implemented (change-req → BAT-021 재검증)
+- Follow-up Action: confirm-req-implemented(BAT-021).
+
+#### Validation Plan
+
+- BAT-021: snapshot 응답 watchdog 필드 shape 단위.

docs/srs/Integration/req-037_forced-close-at-safety-sell-loop.md

@@ -148,3 +148,42 @@
 - Existing Implementation Invalidated: no
 - Status Recommendation: keep-current (Implemented)
 - Follow-up Action: draft-release 로 BAT-011 배포 편성.
+
+### CHG-20260608-01
+
+- Date: 2026-06-08
+- Author: Justin Ko
+
+#### Change Summary
+
+- (change-req, dcy-017/issue #12) safety-sell 가시화: 워치독 소유 진입(전략 이탈)=WARN/이탈(복귀)=INFO(`_update_ownership`, run_once 매 tick), forced_close 발동=WARN(`_log_fire`) + in-process 카운터(`SafetySellService.counters`). 구조화 필드(slot_id/portfolio_id/reason/phase/instance_key). best-effort(가시화 실패가 청산을 막지 않음). 트리거 판정 동작 불변. BAT-021 재구현·재검증 완료 → Implemented 유지.
+
+#### Intent
+
+- 전략 이탈→안전망 소유, forced_close 발동을 무성에서 가시화(OQ-2 차등 매트릭스).
+
+#### Acceptance Criteria Delta
+
+- Added:
+  - 워치독 소유 진입/이탈 + forced_close 발동 로그/카운터. per-tick 스킵은 카운터만.
+
+#### Impacted Area Delta
+
+- Modules: `trex_core/application/safety_sell.py`(_update_ownership/_log_fire/counters/instance_key), `trex_core/runtime/daemon.py`(instance_key 배선)
+- Tests: tests/application/test_safety_sell_visibility.py
+
+#### Delivery Trace Delta
+
+- Batches: BAT-021
+- Releases: none
+
+#### Revalidation Impact
+
+- Reverification Needed: yes (BAT-021 에서 완료)
+- Existing Implementation Invalidated: no (관측만 추가, 트리거 불변)
+- Status Recommendation: Implemented (change-req → BAT-021 재검증)
+- Follow-up Action: confirm-req-implemented(BAT-021).
+
+#### Validation Plan
+
+- BAT-021: 소유 진입 WARN/이탈 INFO/forced_close WARN + 카운터 단위(caplog).

docs/srs/Integration/req-038_stop-loss-take-profit-kis-polling.md

@@ -235,3 +235,42 @@
 - Existing Implementation Invalidated: no
 - Status Recommendation: keep-current (Implemented)
 - Follow-up Action: REL-003 재확인 후 배포.
+
+### CHG-20260608-01
+
+- Date: 2026-06-08
+- Author: Justin Ko
+
+#### Change Summary
+
+- (change-req, dcy-017/issue #12) SL/TP 발동 가시화: `stop_loss` 발동=WARN, `take_profit` 발동=INFO(`_log_fire`) + 카운터(`fire:stop_loss`/`fire:take_profit`). 구조화 필드(slot_id/portfolio_id/reason/phase/instance_key). 판정·KIS polling 동작 불변(관측만). BAT-021 재구현·재검증 완료 → Implemented 유지.
+
+#### Intent
+
+- 손절/익절 발동을 무성에서 가시화(OQ-2: stop_loss=WARN 주의사건, take_profit=INFO).
+
+#### Acceptance Criteria Delta
+
+- Added:
+  - stop_loss(WARN)/take_profit(INFO) 발동 로그 + 카운터.
+
+#### Impacted Area Delta
+
+- Modules: `trex_core/application/safety_sell.py`(check_prices 발동 가시화)
+- Tests: tests/application/test_safety_sell_visibility.py::test_take_profit_fire_logs_info
+
+#### Delivery Trace Delta
+
+- Batches: BAT-021
+- Releases: none
+
+#### Revalidation Impact
+
+- Reverification Needed: yes (BAT-021 에서 완료)
+- Existing Implementation Invalidated: no (관측만 추가)
+- Status Recommendation: Implemented (change-req → BAT-021 재검증)
+- Follow-up Action: confirm-req-implemented(BAT-021).
+
+#### Validation Plan
+
+- BAT-021: take_profit 발동 INFO + 카운터 단위.

docs/srs/Integration/req-039_market-close-liquidation.md

@@ -145,3 +145,42 @@
 - Existing Implementation Invalidated: no
 - Status Recommendation: keep-current (Implemented)
 - Follow-up Action: draft-release 로 BAT-011 배포 편성.
+
+### CHG-20260608-01
+
+- Date: 2026-06-08
+- Author: Justin Ko
+
+#### Change Summary
+
+- (change-req, dcy-017/issue #12) market_close 청산 발동 가시화: `market_close_liquidation` 발동=INFO(`_log_fire`) + 카운터. 구조화 필드 포함. 청산 동작(워치독/grace 무관, 1일 1회) 불변. BAT-021 재구현·재검증 완료 → Implemented 유지.
+
+#### Intent
+
+- 장 마감 청산 발동을 가시화(OQ-2: market_close=INFO).
+
+#### Acceptance Criteria Delta
+
+- Added:
+  - market_close 발동 INFO 로그 + 카운터.
+
+#### Impacted Area Delta
+
+- Modules: `trex_core/application/safety_sell.py`(check_market_close 발동 가시화)
+- Tests: tests/application/test_safety_sell_visibility.py(가시화 전반) + 기존 market_close 회귀
+
+#### Delivery Trace Delta
+
+- Batches: BAT-021
+- Releases: none
+
+#### Revalidation Impact
+
+- Reverification Needed: yes (BAT-021 에서 완료)
+- Existing Implementation Invalidated: no (관측만 추가)
+- Status Recommendation: Implemented (change-req → BAT-021 재검증)
+- Follow-up Action: confirm-req-implemented(BAT-021).
+
+#### Validation Plan
+
+- BAT-021: market_close 발동 시 INFO + 카운터(기존 청산 회귀 동반).