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_schema_model_generation_v1.py

@@ -0,0 +1,43 @@
+"""validate_schema_model_generation_v1.py — schema model generation validator"""
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+SCHEMA_DIR = ROOT / "schemas" / "generated"
+OUT_DIR = ROOT / "src" / "quant_engine" / "models" / "generated"
+REPORT = ROOT / "Temp" / "schema_model_generation_v1.json"
+
+
+def main() -> int:
+    schema_count = len(list(SCHEMA_DIR.glob("*.schema.json")))
+    module_count = len(list(OUT_DIR.glob("*.py")))
+    if not REPORT.exists():
+        print("SCHEMA_MODEL_GENERATION_FAIL: missing report")
+        return 1
+    try:
+        report = json.loads(REPORT.read_text(encoding="utf-8"))
+    except Exception as exc:
+        print(f"SCHEMA_MODEL_GENERATION_FAIL: invalid report ({exc})")
+        return 1
+
+    ok = (
+        report.get("status") == "OK"
+        and int(report.get("schema_count") or 0) == schema_count
+        and int(report.get("generated_module_count") or 0) == schema_count
+        and module_count == schema_count + 1  # generated modules + package __init__
+    )
+    if ok:
+        print("SCHEMA_MODEL_GENERATION_OK")
+        print(f"schema_count={schema_count} module_count={module_count}")
+        return 0
+
+    print("SCHEMA_MODEL_GENERATION_FAIL")
+    print(f"schema_count={schema_count} report={report} module_count={module_count}")
+    return 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())