fix: 한투 호가 2키 전용, LS RAM 합집합, 분봉 쓰레기면 다음 소스 통째

메인 시세 41에 H0STASP0를 붙이는 폴백을 없앤다. MINIMAL과 무관하게
후보∪보유∪영구를 LS RAM에 붙인다. 그 분 틱이 없거나 봉끝 대비 늦으면
그 WS 봉을 버리고 2차·LS·REST 봉을 통째로 쓴다.

같은 파일에 직전 커밋 이후 쌓인 시세 폴백/ENV 키 정리도 포함된다.

Co-authored-by: Cursor <cursoragent@cursor.com>

kis_trader/backtest/bt_candle_source.py

@@ -75,6 +75,28 @@ def _pairs_in_sql(pairs: Sequence[ReadPair]) -> Tuple[str, List[str]]:
     return " AND (" + " OR ".join(parts) + ")", params
 
 
+def _ticks_for_bar_garbage(db, code: str, start_key: str, end_key: str) -> Optional[List[Dict[str, Any]]]:
+    from kis_trader.engine.feed_fallback import candle_garbage_fallback_enabled
+
+    if not candle_garbage_fallback_enabled():
+        return None
+    sk = str(start_key or "").strip()
+    ek = str(end_key or "").strip()
+    if len(sk) == 12:
+        sk = sk + "00"
+    if len(ek) == 12:
+        ek = ek + "59"
+    try:
+        rows = db.conn.execute(
+            "SELECT tick_time, source, tick_time_raw FROM ws_ticks "
+            "WHERE code=%s AND tick_time >= %s AND tick_time <= %s",
+            (str(code).strip(), sk, ek),
+        ).fetchall()
+        return [dict(r) for r in (rows or [])]
+    except Exception:
+        return None
+
+
 def list_ws_candle_codes(
     db,
     timeframe: int,
@@ -147,7 +169,11 @@ def fetch_ws_candles_for_code(
             + " ORDER BY candle_time ASC",
             [int(timeframe), code, start_key, end_key, *src_params],
         ).fetchall()
-    return dedupe_by_read_pairs([dict(r) for r in rows], pairs)
+    ticks = _ticks_for_bar_garbage(db, str(code), start_key, end_key)
+    return dedupe_by_read_pairs(
+        [dict(r) for r in rows], pairs, ticks=ticks, tf_min=int(timeframe),
+        missing_policy="hole", live_cover=False,
+    )
 
 
 def fetch_ws_candles_warmup_before(
@@ -180,5 +206,17 @@ def fetch_ws_candles_warmup_before(
         + " ORDER BY candle_time DESC LIMIT %s",
         [int(timeframe), code, before_candle_time, *src_params, fetch_limit],
     ).fetchall()
-    bars = dedupe_by_read_pairs([dict(r) for r in reversed(rows)], pairs)
+    raw_rows = [dict(r) for r in reversed(rows)]
+    t0 = str(raw_rows[0].get("candle_time") or "")[:12] if raw_rows else ""
+    ticks = (
+        _ticks_for_bar_garbage(db, str(code), t0, str(before_candle_time))
+        if t0 else None
+    )
+    bars = dedupe_by_read_pairs(
+        raw_rows, pairs,
+        ticks=ticks,
+        tf_min=int(timeframe),
+        missing_policy="hole",
+        live_cover=False,
+    )
     return bars[-limit:] if len(bars) > limit else bars