feat: 리밸런싱 엔진 V1 + GAS 버그 수정 (2026-06-13)

주요 변경:
- tools/build_rebalance_engine_v1.py: REBALANCE_ENGINE_V1 신규
  * account_snapshot 직접 합산(_build_snap_position_map) → 소수주 분리 행 병합
  * 레짐 소스 macro.REGIME_PRELIM 최우선 (GAS 와 동일)
- src/gas_adapter_parts/gdf_06_rebalance.gs: runRebalanceSheet_() 신규
  * Logger.log / getSpreadsheet_() 로 run_all 연동 수정
- src/gas_adapter_parts/gdc_01_fetch_fundamentals.gs
  * _mergePositionRecord_(): 소수주 중복 행 합산 신규
  * parseInt → parseFloat (qty, availQty)
- src/gas_adapter_parts/gdf_01_price_metrics.gs
  * 미보유 종목 SELL_READY → WATCH_EXIT_SIGNAL
- spec/41_release_dag.yaml: build_rebalance_sheet 노드 추가 (step_count 63)
- spec/51_formula_lifecycle_registry.yaml: REBALANCE_ENGINE_V1 등록

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

tools/validate_final_execution_decision_v1.py

@@ -0,0 +1,70 @@
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+from typing import Any
+
+
+ROOT = Path(__file__).resolve().parents[1]
+# V2 is the current active artifact; fall back to V1 path if absent
+_V2_PATH = ROOT / "Temp" / "final_execution_decision_v2.json"
+_V1_PATH = ROOT / "Temp" / "final_execution_decision_v1.json"
+DEFAULT_PATH = _V2_PATH if _V2_PATH.exists() else _V1_PATH
+
+
+def _load(path: Path) -> dict[str, Any]:
+    if not path.exists():
+        return {}
+    try:
+        obj = json.loads(path.read_text(encoding="utf-8"))
+    except Exception:
+        return {}
+    return obj if isinstance(obj, dict) else {}
+
+
+def main() -> int:
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--json", default=str(DEFAULT_PATH))
+    args = ap.parse_args()
+
+    path = Path(args.json)
+    if not path.is_absolute():
+        path = ROOT / path
+
+    payload = _load(path)
+    errors: list[str] = []
+
+    if str(payload.get("formula_id") or "") not in {"FINAL_EXECUTION_DECISION_V1", "FINAL_EXECUTION_DECISION_V2"}:
+        errors.append("formula_id mismatch")
+    gate = str(payload.get("global_execution_gate") or "")
+    if gate not in {"HTS_READY", "EXPLAIN_ONLY", "AUDIT_ONLY"}:
+        errors.append(f"global_execution_gate={gate}")
+    if not isinstance(payload.get("buy_allowed"), bool):
+        errors.append("buy_allowed must be bool")
+    if not isinstance(payload.get("sell_allowed"), bool):
+        errors.append("sell_allowed must be bool")
+    if not isinstance(payload.get("hts_order_count"), int):
+        errors.append("hts_order_count must be int")
+    if not isinstance(payload.get("reason_codes"), list):
+        errors.append("reason_codes must be list")
+    if not isinstance(payload.get("llm_allowed_actions"), list):
+        errors.append("llm_allowed_actions must be list")
+
+    if gate != "HTS_READY" and int(payload.get("hts_order_count") or 0) != 0:
+        errors.append("non-HTS_READY decision must have hts_order_count=0")
+
+    if errors:
+        print("FINAL_EXECUTION_DECISION_V1_FAIL")
+        for err in errors:
+            print(f"  {err}")
+        return 1
+
+    print("FINAL_EXECUTION_DECISION_V1_OK")
+    print(f"  global_execution_gate: {gate}")
+    print(f"  hts_order_count: {int(payload.get('hts_order_count') or 0)}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())