docs(release): M2 REL-009 confirm-release + batch release-candidate 전이

trex-core의 release-prep:
- 배치 검증 완료 (BAT-047, BAT-048)
- M2 event reliability + fill guard + alarm runbook 문서 (REL-009)
- releases index 업데이트

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VHtM5Ws1HKCKQ4JGi6GRb5

docs/releases/index.md

@@ -16,3 +16,4 @@
 | REL-006 | app-service | feedback-captured | BAT-026, BAT-027, BAT-028, BAT-029, BAT-030, BAT-031, BAT-032, BAT-033, BAT-034, BAT-035, BAT-036 | dcy-020 (자산 중심 영구 슬롯 α~δ cutover) + dcy-021 (포지션 사이징/issue #1·#5) + dcy-022 (실행 정책/issue #21) + dcy-023 (allocated_capital 제거/issue #22) + dcy-024 (safety_sell_enabled/issue #15) + dcy-025 (slots.req 교체·REQ-028 Deprecated) + REQ-048·010 CHG (config-dir) + REQ-032 CHG (enter --qty/issue #23) — 통합 릴리즈 | [rel-006](rel-006_20260611_asset-centric-sizing-execution-policy.md) |
 | REL-007 | app-service | feedback-captured | BAT-037, BAT-038, BAT-039, BAT-040, BAT-041 | dcy-025 (REQ-073 CHG — available_slots hint) + dcy-026/issue #24 (매도세 정정) + issue #4 (paper seq Redis) + issue #25 (slots RPC DB 필터) + dcy-027/issue #20 (중장기 인스턴스 프로파일) — 통합 릴리즈 | [rel-007](rel-007_20260612_slots-rpc-fee-paper-longterm.md) |
 | REL-008 | app-service | feedback-captured | BAT-042, BAT-043, BAT-044, BAT-045, BAT-046 | dcy-028/issue #26 (slot strategy-state) + issue #27 (sell retryable) + dcy-030/issue #28 (호가단위 스냅, P0 체결 복구) + dcy-029/issue #29 (운영 관측성 — 구조화 로깅·주문결과·거부ERROR·reason+actor·PnL CLI·런북) — 통합 릴리즈 | [rel-008](rel-008_20260616_tick-snap-and-observability.md) |
+| REL-009 | app-service | confirmed | BAT-047, BAT-048, BAT-049 | dcy-031/OPS-005 (이벤트 발행 신뢰성 — idle keepalive·재시도·DLQ 경보) + dcy-032 (체결가 0/None 백필 가드·WARN 로깅) + dcy-033 (알람 emitter + trex.alerts exchange 1단계) + dcy-017 후속(무데이터/죽은 종목 위생 런북 docs-only) — M2 통합 릴리즈 | [rel-009](rel-009_20260625_event-reliability-fill-guard-alarm-runbook.md) |