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_packet_source_paths_v1.py

@@ -0,0 +1,63 @@
+import json
+import argparse
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+
+def extract_source_paths(obj):
+    paths = []
+    if isinstance(obj, dict):
+        if "source_path" in obj:
+            paths.append(obj["source_path"])
+        for k, v in obj.items():
+            paths.extend(extract_source_paths(v))
+    elif isinstance(obj, list):
+        for item in obj:
+            paths.extend(extract_source_paths(item))
+    return paths
+
+def main():
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--packet", default="Temp/final_decision_packet_active.json")
+    ap.add_argument("--out", default="Temp/validate_packet_source_paths_v1.json")
+    args = ap.parse_args()
+
+    packet_path = ROOT / args.packet
+    if not packet_path.exists():
+        print(f"Packet not found: {packet_path}")
+        return 1
+
+    with open(packet_path, encoding="utf-8") as f:
+        data = json.load(f)
+
+    paths = set(extract_source_paths(data))
+    
+    missing = []
+    for p in paths:
+        # Resolve replacements as per P0-002 logic
+        resolved_p = p.replace("\\", "/")
+        if "Temp/active_artifact_manifest_v2.json" in resolved_p:
+            resolved_p = "runtime/active_artifact_manifest.yaml"
+            
+        full_path = ROOT / resolved_p
+        if not full_path.exists():
+            missing.append(resolved_p)
+
+    out_data = {
+        "formula_id": "VALIDATE_PACKET_SOURCE_PATHS_V1",
+        "missing_source_path_count": len(missing),
+        "missing_paths": missing,
+        "gate": "PASS" if len(missing) == 0 else "FAIL"
+    }
+
+    out_file = ROOT / args.out
+    out_file.parent.mkdir(parents=True, exist_ok=True)
+    with open(out_file, "w", encoding="utf-8") as f:
+        json.dump(out_data, f, indent=2)
+
+    print(json.dumps(out_data, indent=2))
+    return 0 if len(missing) == 0 else 1
+
+if __name__ == "__main__":
+    import sys
+    sys.exit(main())