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/build_data_freshness_sla_v1.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+DEFAULT_GATHER = ROOT / "GatherTradingData.json"
+DEFAULT_OUT = ROOT / "Temp" / "data_freshness_sla_v1.json"
+
+
+def _load_json(path: Path) -> dict:
+    if not path.exists():
+        return {}
+    payload = json.loads(path.read_text(encoding="utf-8"))
+    return payload if isinstance(payload, dict) else {}
+
+
+def main() -> int:
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--gather", default=str(DEFAULT_GATHER))
+    ap.add_argument("--out", default=str(DEFAULT_OUT))
+    args = ap.parse_args()
+
+    gather = _load_json(Path(args.gather))
+    hctx = gather.get("data", {}).get("_harness_context", {}) if isinstance(gather.get("data"), dict) else {}
+    hctx = hctx if isinstance(hctx, dict) else {}
+    hapex = gather.get("hApex", {}) if isinstance(gather.get("hApex"), dict) else {}
+
+    collection_timestamp = hctx.get("captured_at") or hapex.get("captured_at") or ""
+    decision_timestamp = hctx.get("decision_timestamp") or hctx.get("as_of") or gather.get("as_of") or ""
+    freshness_status = hctx.get("data_freshness_status") or "UNKNOWN"
+    snapshot_execution_gate = str(hctx.get("snapshot_execution_gate") or "").upper()
+    gate = "PASS" if freshness_status in {"FRESH", "STALE"} and bool(collection_timestamp or decision_timestamp) else "FAIL"
+
+    payload = {
+        "formula_id": "DATA_FRESHNESS_SLA_V1",
+        "gate": gate,
+        "collection_timestamp": collection_timestamp,
+        "decision_timestamp": decision_timestamp,
+        "freshness_status": freshness_status,
+        "snapshot_execution_gate": snapshot_execution_gate,
+        "source_packet": "Temp/final_decision_packet_active.json",
+    }
+    out = Path(args.out)
+    out.parent.mkdir(parents=True, exist_ok=True)
+    out.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
+    print(json.dumps(payload, ensure_ascii=False, indent=2))
+    return 0 if gate == "PASS" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())