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_canonical_artifact_resolver_v1.py

@@ -0,0 +1,37 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+
+from refactor_master_helpers import ROOT, load_yaml
+
+
+def main() -> int:
+    manifest = load_yaml(ROOT / "artifacts" / "canonical_manifest.yaml")
+    concepts = manifest.get("concepts", {}) if isinstance(manifest.get("concepts"), dict) else {}
+    issues = []
+    for concept, info in concepts.items():
+        if not isinstance(info, dict):
+            issues.append({"concept": concept, "issue": "bad_entry"})
+            continue
+        canon = info.get("canonical_path")
+        source = info.get("source_file")
+        if not canon or not (ROOT / canon).exists():
+            issues.append({"concept": concept, "issue": "missing_canonical", "path": str(canon)})
+        if not source or not (ROOT / source).exists():
+            issues.append({"concept": concept, "issue": "missing_source", "path": str(source)})
+    result = {
+        "formula_id": "CANONICAL_ARTIFACT_RESOLVER_V1",
+        "concept_count": len(concepts),
+        "issue_count": len(issues),
+        "issues": issues[:200],
+        "gate": "PASS" if not issues else "FAIL",
+    }
+    out = ROOT / "Temp" / "canonical_artifact_resolver_v1_validation.json"
+    out.write_text(json.dumps(result, ensure_ascii=False, indent=2), encoding="utf-8")
+    print(json.dumps(result, ensure_ascii=False, indent=2))
+    return 0 if not issues else 1
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())