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_tool_thin_wrapper_v1.py

@@ -0,0 +1,54 @@
+from __future__ import annotations
+
+import argparse
+import json
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def _scan(path: Path) -> list[dict[str, str]]:
+    text = path.read_text(encoding="utf-8", errors="ignore")
+    findings: list[dict[str, str]] = []
+    if "subprocess.run" in text and "cwd=" not in text:
+        findings.append({"file": str(path.relative_to(ROOT)), "reason": "subprocess_without_root_cwd"})
+    if "requests." in text or "pandas." in text or "numpy." in text:
+        findings.append({"file": str(path.relative_to(ROOT)), "reason": "heavy_dependency_in_tool"})
+    return findings
+
+
+def main() -> int:
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--root", default="tools")
+    ap.add_argument("--max-findings", type=int, default=0)
+    args = ap.parse_args()
+
+    root = (ROOT / args.root).resolve()
+    findings: list[dict[str, str]] = []
+    for path in sorted(root.rglob("*.py")):
+        if path.name.startswith("validate_tool_thin_wrapper"):
+            continue
+        if path.name in {
+            "validate_golden_coverage_100.py",
+            "validate_harness_coverage_auditor.py",
+            "validate_engine_harness_gate.py",
+        }:
+            continue
+        findings.extend(_scan(path))
+
+    gate = "PASS" if len(findings) <= args.max_findings else "FAIL"
+    payload = {
+        "formula_id": "TOOL_THIN_WRAPPER_V1",
+        "gate": gate,
+        "thin_wrapper_findings": len(findings),
+        "findings": findings[:200],
+    }
+    out = ROOT / "Temp" / "tool_thin_wrapper_v1.json"
+    out.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
+    print(json.dumps(payload, ensure_ascii=True, indent=2))
+    return 0 if gate == "PASS" else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())