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/build_module_io_coverage_v1.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+import json
+import yaml
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+
+def main():
+    registry_path = ROOT / "spec" / "48_module_io_contract_registry.yaml"
+    out_path = ROOT / "Temp" / "module_io_coverage_v1.json"
+    
+    if not registry_path.exists():
+        print(f"Registry not found: {registry_path}")
+        return 1
+
+    with registry_path.open("r", encoding="utf-8") as f:
+        data = yaml.safe_load(f)
+
+    modules = data.get("modules", {})
+    total = len(modules)
+    covered = 0
+    
+    module_details = []
+    for mid, m in modules.items():
+        # Check if schema and artifact exist
+        schema_exists = (ROOT / m["schema"]).exists()
+        artifact_exists = (ROOT / m["artifact_path"]).exists()
+        
+        is_covered = schema_exists and artifact_exists
+        if is_covered:
+            covered += 1
+            
+        module_details.append({
+            "id": mid,
+            "schema_exists": schema_exists,
+            "artifact_exists": artifact_exists,
+            "covered": is_covered
+        })
+
+    coverage_pct = (covered / total * 100) if total > 0 else 0
+    
+    result = {
+        "formula_id": "MODULE_IO_COVERAGE_V1",
+        "total_modules": total,
+        "covered_modules": covered,
+        "coverage_pct": coverage_pct,
+        "module_details": module_details
+    }
+    
+    out_path.parent.mkdir(parents=True, exist_ok=True)
+    out_path.write_text(json.dumps(result, indent=2, ensure_ascii=False), encoding="utf-8")
+    print(f"Coverage: {coverage_pct:.1f}%")
+    return 0
+
+if __name__ == "__main__":
+    main()