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_rollback_manifest_v3.py

@@ -0,0 +1,60 @@
+from __future__ import annotations
+
+import argparse
+import hashlib
+import json
+from datetime import datetime, timezone
+from pathlib import Path
+
+import yaml
+
+ROOT = Path(__file__).resolve().parents[1]
+
+SNAPSHOT_FILES = [
+    "Temp/final_decision_packet_active.json",
+    "runtime/active_artifact_manifest.yaml",
+    "spec/41_release_dag.yaml",
+    "package.json",
+]
+
+
+def _sha256(path: Path) -> str:
+    if not path.exists():
+        return "FILE_MISSING"
+    return hashlib.sha256(path.read_bytes()).hexdigest()
+
+
+def main() -> int:
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--out", default="runtime/rollback_manifest_v3.yaml")
+    args = ap.parse_args()
+
+    entries = []
+    for rel in SNAPSHOT_FILES:
+        p = ROOT / rel
+        entries.append({"path": rel, "sha256": _sha256(p)})
+
+    combined = "".join(e["sha256"] for e in entries if e["sha256"] != "FILE_MISSING")
+    rollback_hash = hashlib.sha256(combined.encode()).hexdigest() if combined else "NO_HASH"
+
+    manifest = {
+        "formula_id": "REFACTOR_ROLLBACK_MANIFEST_V3",
+        "generated_at": datetime.now(timezone.utc).isoformat(),
+        "rollback_hash": rollback_hash,
+        "rollback_hash_present": bool(rollback_hash and rollback_hash != "NO_HASH"),
+        "snapshot_files": entries,
+    }
+
+    out_path = ROOT / args.out
+    out_path.parent.mkdir(parents=True, exist_ok=True)
+    out_path.write_text(yaml.dump(manifest, allow_unicode=True, default_flow_style=False),
+                        encoding="utf-8")
+
+    print(f"rollback_hash_present: {manifest['rollback_hash_present']}")
+    print(f"rollback_hash: {rollback_hash[:16]}...")
+    print(f"Written to: {out_path}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())