docs(release): draft + confirm REL-002 (tooling) for BAT-009

REL-002 bundles BAT-009 (paper broker env tuning, REQ-010 AC-5) as a
tooling-profile release. Rollout/rollback/verification ready; status
confirmed. No DB migration or daemon restart; broker=kis runtime
unaffected (paper config only).

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

docs/releases/index.md

@@ -9,3 +9,4 @@
 | REL ID | Profile | Status | Included Batch | Discovery/REQ Input | Link |
 | --- | --- | --- | --- | --- | --- |
 | REL-001 | app-service | confirmed | BAT-001~008 | Discovery: orb-v1 전략 모듈, 부분 매도(#5) / Change-req: REQ-030 옵션 D, 전략 필드 실데이터, 이벤트 publisher idle 견고성, paper execution_id Redis(#4) | [rel-001](rel-001_20260606_trex-core-slot-core-baseline.md) |
+| REL-002 | tooling | confirmed | BAT-009 | Change-req: paper execution_id Redis(#4) | [rel-002](rel-002_20260606_paper-broker-env-tuning.md) |