feat(quant-engine): v8.9 제안서 P0-P3 로드맵 채택 — 15개 의사결정 엔진 신규 구현

suggest/quant_investment_engine_v8_9_portfolio_optimizer_canonical_refactored.yaml의
implementation_todo_v8_9(P0~P4) 전체를 spec/tool/golden case 레벨로 구현.

- P0: PORTFOLIO_TRANSITION_UTILITY_V1, SELL_LOT_PARETO_SELECTOR_V1, FORECAST_SIMULATION_ENGINE_V1
- P1: SECTOR_EXPOSURE_GRAPH_V1/LEADER_LIFECYCLE_GATE_V1, EXECUTION_CAPACITY_LADDER_V1, MODEL_GOVERNANCE_KILL_SWITCH_V1
- P2: SCENARIO_SHOCK_MATRIX_V1, TRANSITION_SET_ENUMERATOR_V1, IMMUTABLE_DECISION_LEDGER_V1, EXECUTION_PLAN_COMPILER_V1
- P3: STATE_VECTOR_CONSTRUCTOR_V1, WALK_FORWARD_BOOTSTRAP_V1, TRANSITION_SET_ENUMERATOR_V1(MRC/CVaR 확장),
      REBALANCE_CADENCE_GATE_V1, WEEKLY_LEGACY_TRANSFER_PLAN_V1

기존 regime/cluster 연동 정책 수치(현금방어선, 반도체 cap)는 그대로 유지하고 신규 cap 필드만 추가.
spec/09_decision_flow.yaml과 runtime/active_artifact_manifest.yaml에 전 엔진 배선 완료.
governance/todo/v8_9_p{0,1,2,3}_adoption_plan.yaml에 각 단계 작업 추적 기록.

검증: validate_specs/validate_golden_coverage_100(100%)/validate_calibration_registry_v1/
validate_schema_model_generation_v1/validate_agents_shrink_v1 전부 PASS. golden test 53/53 PASS.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

spec/formulas/domains/execution.yaml

@@ -0,0 +1,144 @@
+schema_version: formula_domain.v1
+source: C:\Temp\data_feed\spec\13_formula_registry.yaml
+domain: execution
+meta:
+  note: >
+    governance/todo/v8_9_p1_adoption_plan.yaml P1-B.
+    source: suggest/quant_investment_engine_v8_9_portfolio_optimizer_canonical_refactored.yaml:execution_plan_compiler_v8_9
+formulas:
+  EXECUTION_CAPACITY_LADDER_V1:
+    purpose: >
+      계획된 주문금액이 종목의 실제 체결 가능 용량(20일 평균거래대금, 당일 거래대금, 호가창 깊이)을
+      초과하지 않도록 결정론적으로 캡핑한다. broker_microstructure_packet이 없으면 주문 계획 자체를
+      차단한다(v8.9 V89_019).
+      (governance/todo/v8_9_p1_adoption_plan.yaml P1-B.1,
+      source: suggest/quant_investment_engine_v8_9_portfolio_optimizer_canonical_refactored.yaml:execution_plan_compiler_v8_9.broker_microstructure_packet_required)
+    applicable: PORTFOLIO_TRANSITION_UTILITY_V1에서 selected_transition 확정 후, 주문 분할(split_order_template) 직전.
+    inputs:
+    - field: planned_order_amount_krw
+      unit: KRW
+    - field: avg_trade_value_20d_krw
+      unit: KRW
+      source: 기존 avg_trade_value_5d(spec/12_field_dictionary.yaml)의 20일 윈도우 변형
+    - field: intraday_trade_value_krw
+      unit: KRW
+    - field: orderbook_top3_depth_krw
+      unit: KRW
+    - field: spread_bps
+      unit: basis_points
+    - field: tick_size
+      unit: KRW_per_share
+      source: spec/formulas/domains/cash.yaml:tick_size_table
+    - field: daily_price_limit
+      unit: percent
+    - field: halt_status
+      unit: boolean
+    expression: >
+      order_capacity_krw = min(planned_order_amount_krw, avg_trade_value_20d_krw * 0.003,
+      intraday_trade_value_krw * 0.01, orderbook_top3_depth_krw * 0.30)
+    output:
+      field: order_capacity_krw
+      unit: KRW
+    gates:
+    - if: halt_status == true
+      action: EXECUTION_PLAN_BLOCKED
+      reason_code: trading_halt
+    - if: avg_trade_value_20d_krw is null OR orderbook_top3_depth_krw is null OR spread_bps is null
+      action: EXECUTION_PLAN_BLOCKED
+      reason_code: broker_packet_missing
+    - if: order_capacity_krw < planned_order_amount_krw
+      action: ORDER_SIZE_CAPPED
+      reason_code: capacity_too_low
+    spread_widen_cancel_rule:
+      condition: spread_bps > spread_bps_baseline * 1.5 (slice 체결 사이 측정)
+      action: CANCEL_REMAINING_SLICES
+      canonical_ref: suggest/quant_investment_engine_v8_9...:execution_plan_compiler_v8_9.cancel_remaining_if
+    split_order_template:
+      slice_1_pct: 30
+      slice_2_pct: 30
+      slice_3_pct: 40
+      requires_revalidation_before_each_slice: true
+      revalidation_fields: [cash_floor, deployable_cash, order_capacity_krw, spread_bps]
+    missing_policy: broker_microstructure_packet 필드 중 하나라도 null이면 EXECUTION_PLAN_BLOCKED. 추정 금지.
+    canonical_ref: spec/05_position_sizing.yaml
+    implementation: tools/build_execution_capacity_ladder_v1.py
+    owner: quant_team
+    lifecycle_state: shadow
+    input_fields:
+    - planned_order_amount_krw
+    - avg_trade_value_20d_krw
+    - intraday_trade_value_krw
+    - orderbook_top3_depth_krw
+    - spread_bps
+    - tick_size
+    - daily_price_limit
+    - halt_status
+    output_fields:
+    - order_capacity_krw
+    golden_cases:
+    - V89_019_broker_packet_missing
+    - V89_020_capacity_too_low
+    - V89_022_spread_widens
+    activation_threshold:
+      min_t20_sample: 30
+    retirement_condition: performance_degradation
+  EXECUTION_PLAN_COMPILER_V1:
+    purpose: >
+      EXECUTION_CAPACITY_LADDER_V1이 산출한 order_capacity_krw를 30/30/40 LIMIT_SPLIT 슬라이스로
+      컴파일하고, 각 슬라이스 실행 직전 cash_floor·capacity·spread를 재검증한다.
+      재검증 실패 또는 cancel_remaining_if 조건 충족 시 잔여 슬라이스를 취소한다.
+      (governance/todo/v8_9_p2_adoption_plan.yaml P2-D,
+      source: suggest/quant_investment_engine_v8_9_portfolio_optimizer_canonical_refactored.yaml:execution_plan_compiler_v8_9.split_order_template,
+      execution_plan_compiler_v8_9.cancel_remaining_if)
+    applicable: EXECUTION_CAPACITY_LADDER_V1.gate가 PASS 또는 ORDER_SIZE_CAPPED일 때만 호출.
+    inputs:
+    - field: order_capacity_krw
+      unit: KRW
+      source: spec/formulas/domains/execution.yaml:EXECUTION_CAPACITY_LADDER_V1
+    - field: slice_index
+      unit: 'enum: 1 | 2 | 3'
+    - field: revalidation_snapshot
+      unit: json
+      note: 'slice 직전 시점의 {cash_floor_pct, deployable_cash_krw, order_capacity_krw, spread_bps}'
+    - field: baseline_snapshot
+      unit: json
+      note: 컴파일 시점(slice 1 이전)의 동일 필드 스냅샷. spread_widen_cancel_rule 기준값.
+    cancel_remaining_if:
+    - captain_reverses_intraday
+    - index_drop_exceeds_threshold
+    - spread_widens_beyond_limit: "revalidation_snapshot.spread_bps > baseline_snapshot.spread_bps * 1.5"
+    - cash_floor_after_fill_breached: "revalidation_snapshot.cash_floor_pct < required_cash_pct"
+    - data_quarantine_after_slice
+    - orderbook_capacity_collapses: "revalidation_snapshot.order_capacity_krw < baseline_snapshot.order_capacity_krw * 0.5"
+    expression: >
+      slice_amount_krw(1) = order_capacity_krw * 0.30
+      slice_amount_krw(2) = order_capacity_krw * 0.30
+      slice_amount_krw(3) = order_capacity_krw * 0.40
+      각 슬라이스는 직전 슬라이스 체결 후 revalidation_snapshot을 재계산하고 cancel_remaining_if를
+      평가한 뒤에만 진행한다. 어느 한 조건이라도 true이면 이후 슬라이스는 컴파일하지 않는다.
+    output:
+      field: compiled_slices
+      unit: 'list_of_{slice_index, slice_amount_krw, status}'
+    additional_outputs:
+    - cancel_reason_code
+    - slices_executed_count
+    missing_policy: order_capacity_krw 또는 baseline_snapshot 결측 시 컴파일 자체를 EXECUTION_PLAN_BLOCKED.
+    canonical_ref: spec/formulas/domains/execution.yaml:EXECUTION_CAPACITY_LADDER_V1
+    implementation: tools/build_execution_plan_compiler_v1.py
+    owner: quant_team
+    lifecycle_state: shadow
+    input_fields:
+    - order_capacity_krw
+    - slice_index
+    - revalidation_snapshot
+    - baseline_snapshot
+    output_fields:
+    - compiled_slices
+    - cancel_reason_code
+    golden_cases:
+    - V89_021_partial_fill
+    - V89_022_spread_widens
+    - V89_023_gap_up_chase
+    activation_threshold:
+      min_t20_sample: 30
+    retirement_condition: performance_degradation