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>

schemas/generated/sector_exposure_graph_v1.schema.json

@@ -0,0 +1,49 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "schema://formula/SECTOR_EXPOSURE_GRAPH_V1",
+  "title": "SECTOR_EXPOSURE_GRAPH_V1",
+  "type": "object",
+  "properties": {
+    "formula_id": {
+      "const": "SECTOR_EXPOSURE_GRAPH_V1"
+    },
+    "owner": {
+      "type": "string"
+    },
+    "status": {
+      "type": "string"
+    },
+    "inputs": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      }
+    },
+    "outputs": {
+      "type": "array",
+      "items": {
+        "type": "string"
+      }
+    }
+  },
+  "required": [
+    "formula_id",
+    "owner",
+    "status",
+    "inputs",
+    "outputs"
+  ],
+  "x_formula_inputs": [
+    "direct_weight_pct",
+    "etf_constituents_json",
+    "etf_weight_pct",
+    "sector_id",
+    "peer_sector_betas"
+  ],
+  "x_formula_outputs": [
+    "sector_family_total_pct",
+    "lookthrough_etf_weight_pct",
+    "factor_beta_residualized",
+    "leader_role"
+  ]
+}