WBS-7.3: GAS→Python 마이그레이션 5개 항목 완료 (F14, F02-F06)

- F14: late_chase_risk_score 검증
  * GAS가 유일한 생산처 (Python canonical 없음)
  * migration_action: KEEP_IN_GAS로 정정, status: DONE

- F02/F03/F04/F06: priceBasis 로직 포팅
  * formulas/price_basis_v1.py: select_price_basis_tier2/tier1 구현
  * tests/parity/test_price_basis_parity_v1.py: 8 parity 테스트 (모두 PASS)
  * GAS Number.isFinite() 의미론 정확히 재현 (math.isfinite 사용)
  * 모든 테스트 112/112 PASS

남은 작업 (4개):
- F05: decision_logic (action assignment)
- F07: score_logic (threshold addition)
- F10: routing decision
- F15: late_chase_gate

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

spec/strategy/anti_late_entry_pullback_gate_v5.yaml

@@ -2,3 +2,11 @@ schema_version: anti_late_entry_pullback_gate.v5
 parent_file: spec/strategy/anti_late_entry_pullback_gate_v4.yaml
 formula_id: ANTI_LATE_ENTRY_PULLBACK_GATE_V5
 purpose: Pre-trade late-chase and pullback quality gate.
+rule:
+  precedence: "anti_late_entry gate must be evaluated first for any BUY or STAGED_BUY candidate."
+  action_on_fail:
+    gate_fail_status: "FAIL"
+    quantity: 0
+    downgrade_action: "WATCH or BLOCKED"
+    shadow_ledger: "Record gate failure reason and thresholds in shadow ledger"
+

spec/strategy/pre_distribution_early_warning_v4.yaml

@@ -2,3 +2,10 @@ schema_version: pre_distribution_early_warning.v4
 parent_file: spec/strategy/pre_distribution_early_warning_v3.yaml
 formula_id: PRE_DISTRIBUTION_EARLY_WARNING_V4
 purpose: Early warning gate for distribution risk.
+conflict_precedence:
+  - risk_exit
+  - cash_floor
+  - anti_late_entry
+  - smart_money
+  - momentum
+

spec/strategy/smart_money_liquidity_gate_v1.yaml

@@ -51,3 +51,11 @@ evidence_outcome_link:
   acceptance:
     - "liquidity_label별 슬리피지·수익 표 출력"
     - "표본 < 30 시 [UNVALIDATED: n={n}] 라벨 부착"
+
+conflict_precedence:
+  - risk_exit
+  - cash_floor
+  - anti_late_entry
+  - smart_money
+  - momentum
+