feat(execution,obs): 호가단위 스냅(dcy-030/#28) + 운영 관측성(dcy-029/#29) + REL-007 환류

dcy-030 (issue #28, P0 체결 복구):
- REQ-083 KRX 호가단위(tick) 순수 유틸 (domain/pricing.py)
- REQ-070 CHG: 슬리피지 실효가 호가단위 스냅 — 상한 준수(매수 floor/매도 ceil)
  + band<1tick 하한/상한 보장 + 부동소수 epsilon 가드. 147700→148400/54500→54700.
- BAT-044 release-candidate

dcy-029 (issue #29, 운영 관측성):
- REQ-084 구조화 로깅 기반 (runtime/logging_setup.py): ISO8601 KST·레벨·Loki JSON
  ·correlation id(slot_id)
- REQ-085 주문 결과 로깅 (event=order_submit|fill|reject)
- REQ-087 거부 ERROR 가시성 (조용한 롤백 제거)
- REQ-086 청산 reason+actor 동반 노출 (안전망/전략 구분, 신규 필드 없음)
- REQ-088 운영 조회 CLI report (application/operator_report.py, 보유·오늘 체결
  ·실현 PnL net·대기, direct-DB)
- REQ-089 운영자 런북 docs/operations.md
- REQ-090 baseline 정합 (runtime-flows·project-structure·interface-contract)
- BAT-045(P0)·BAT-046(P1) release-candidate

REL-007: confirmed → feedback-captured (운영 인스턴스 라이브 검증 + #28/#29 환류
정규화). BAT-037~041 released.

검증: 537 passed, 47 skipped, 회귀 0, ruff clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/batches/index.md

@@ -44,10 +44,13 @@
 | BAT-034 | standard | released | REQ-002 (CHG-20260610-02), REQ-006 (CHG-20260610-02), REQ-007 (CHG-20260610-02), REQ-028 (CHG-20260610-01), REQ-032 (CHG-20260610-07) | dcy-023 (issue #22) | [bat-034](./bat-034_20260610_drop-allocated-capital/) |
 | BAT-035 | standard | released | REQ-073, REQ-074, REQ-075, REQ-021 (CHG-20260611-01), REQ-034 (CHG-20260611-01), REQ-063 (CHG-20260611-01) | dcy-025 | [bat-035](./bat-035_20260611_strategy-read-surface-slots-req/) |
 | BAT-036 | standard | released | REQ-048 (CHG-20260611-01), REQ-005 (CHG-20260611-01) | dcy-024 | [bat-036](./bat-036_20260611_safety-sell-disable-mode/) |
-| BAT-037 | standard | release-candidate | REQ-073 (CHG-20260612-01) | dcy-025 (REQ-073 change-req) | [bat-037](./bat-037_20260612_slots-rpc-available-slots/) |
-| BAT-038 | standard | release-candidate | REQ-018 (CHG-20260612-01) | dcy-026 (issue #24) | [bat-038](./bat-038_20260612_sell-transaction-tax-fee/) |
-| BAT-039 | standard | release-candidate | REQ-011 (CHG-20260612-01) | 없음 (issue #4) | [bat-039](./bat-039_20260612_paper-seq-redis-persistence/) |
-| BAT-040 | standard | release-candidate | REQ-002 (CHG-20260612-01), REQ-006 (CHG-20260612-01), REQ-073 (CHG-20260612-02) | 없음 (issue #25) | [bat-040](./bat-040_20260612_slots-rpc-db-filter/) |
-| BAT-041 | standard | release-candidate | REQ-076, REQ-077, REQ-078 | dcy-027 (issue #20 이월) | [bat-041](./bat-041_20260612_long-term-instance-profile/) |
+| BAT-037 | standard | released | REQ-073 (CHG-20260612-01) | dcy-025 (REQ-073 change-req) | [bat-037](./bat-037_20260612_slots-rpc-available-slots/) |
+| BAT-038 | standard | released | REQ-018 (CHG-20260612-01) | dcy-026 (issue #24) | [bat-038](./bat-038_20260612_sell-transaction-tax-fee/) |
+| BAT-039 | standard | released | REQ-011 (CHG-20260612-01) | 없음 (issue #4) | [bat-039](./bat-039_20260612_paper-seq-redis-persistence/) |
+| BAT-040 | standard | released | REQ-002 (CHG-20260612-01), REQ-006 (CHG-20260612-01), REQ-073 (CHG-20260612-02) | 없음 (issue #25) | [bat-040](./bat-040_20260612_slots-rpc-db-filter/) |
+| BAT-041 | standard | released | REQ-076, REQ-077, REQ-078 | dcy-027 (issue #20 이월) | [bat-041](./bat-041_20260612_long-term-instance-profile/) |
 | BAT-042 | standard | release-candidate | REQ-079, REQ-080, REQ-081, REQ-082, REQ-073 (CHG-20260615-01), REQ-074 (CHG-20260615-01) | dcy-028 (issue #26) | [bat-042](./bat-042_20260615_slot-strategy-state-store/) |
 | BAT-043 | batch-lite | release-candidate | REQ-007 (CHG-20260615-01) | 없음 (issue #27) | [bat-043](./bat-043_20260615_sell-intent-retryable-flag/) |
+| BAT-044 | standard | release-candidate | REQ-083, REQ-070 (CHG-20260616-01) | dcy-030 (issue #28) | [bat-044](./bat-044_20260616_slippage-tick-size-snapping/) |
+| BAT-045 | standard | release-candidate | REQ-084, REQ-085, REQ-087 | dcy-029 (issue #29, P0) | [bat-045](./bat-045_20260616_observability-logging-foundation/) |
+| BAT-046 | standard | release-candidate | REQ-086, REQ-088, REQ-089, REQ-090 | dcy-029 (issue #29, P1) | [bat-046](./bat-046_20260616_observability-classification-pnl-runbook/) |