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_operational_report_contract.py

@@ -0,0 +1,63 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import Any
+
+from operational_report_contract import (
+    REPORT_SCHEMA_VERSION,
+    REPORT_SECTION_ORDER,
+    REPORT_SOURCE_JSON,
+)
+
+
+ROOT = Path(__file__).resolve().parents[1]
+SCHEMA_PATH = ROOT / "schemas" / "operational_report.schema.json"
+
+
+def load_json(path: Path) -> dict[str, Any]:
+    payload = json.loads(path.read_text(encoding="utf-8"))
+    return payload if isinstance(payload, dict) else {}
+
+
+def main() -> int:
+    if not SCHEMA_PATH.exists():
+        print("OPERATIONAL_REPORT_CONTRACT_FAIL: missing schema file")
+        return 1
+
+    schema = load_json(SCHEMA_PATH)
+    errors: list[str] = []
+
+    if schema.get("properties", {}).get("schema_version", {}).get("const") != REPORT_SCHEMA_VERSION:
+        errors.append("schema_version const mismatch")
+    if schema.get("properties", {}).get("source_json", {}).get("const") != REPORT_SOURCE_JSON:
+        errors.append("source_json const mismatch")
+
+    section_count = schema.get("properties", {}).get("section_count", {})
+    if section_count.get("type") != "integer":
+        errors.append("section_count type must be integer")
+
+    sections = schema.get("properties", {}).get("sections", {})
+    if sections.get("type") != "array":
+        errors.append("sections type must be array")
+
+    section_items = sections.get("items", {})
+    name_type = section_items.get("properties", {}).get("name", {}).get("type")
+    if name_type != "string":
+        errors.append("section item name type must be string")
+
+    if len(REPORT_SECTION_ORDER) != len(set(REPORT_SECTION_ORDER)):
+        errors.append("contract section order contains duplicates")
+
+    if errors:
+        for error in errors:
+            print(error)
+        print("OPERATIONAL_REPORT_CONTRACT_FAIL")
+        return 1
+
+    print("OPERATIONAL_REPORT_CONTRACT_OK")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())