feat(Core/UI): 백테스트 전역 엔진 선택 버튼 추가 및 스캘핑 Rust 방어로직 포팅 1차 완료

scratch/explain_kis_kiwoom.py

@@ -0,0 +1,30 @@
+import sys
+import json
+sys.path.insert(0, '/home/hoon/kis_bot')
+from database import TradeDB
+
+db = TradeDB()
+today = '20260813'
+
+queries = [
+    # 1. feed_collect_stats - TEMP 테이블 생성 시
+    f"EXPLAIN SELECT id, code, tick_time, tick_time_raw, source, recv_ts FROM ws_ticks WHERE tick_time >= '{today}000000' AND tick_time <= '{today}235959'",
+    f"EXPLAIN SELECT id, code, snap_time, source, recv_ts, reject_code, strategy FROM ws_orderbook WHERE snap_time >= '{today}000000' AND snap_time <= '{today}235959'",
+    
+    # 2. 통계 등에서 GROUP BY를 하거나 STR_TO_DATE를 쓰는 경우 (가정)
+    f"EXPLAIN SELECT source, COUNT(*) n FROM ws_ticks WHERE tick_time LIKE '{today}%' GROUP BY source",
+    
+    # 3. 백테스트/옵투나에서 종목+시간으로 조회하는 경우
+    f"EXPLAIN SELECT * FROM ws_ticks WHERE tick_time >= '{today}090000' AND tick_time <= '{today}153000' AND code='005930'"
+]
+
+for q in queries:
+    print(f"\n--- Query: {q} ---")
+    try:
+        rows = db.conn.execute(q).fetchall()
+        for r in rows:
+            print(dict(r))
+    except Exception as e:
+        print("Error:", e)
+
+db.close()