fix: Update imports and enhance error handling in momentum engine and tick replay

Changes:
- Replaced the import of `get_env_int` with `get_env_from_db` in `momentum_engine.py` to improve environment variable retrieval.
- Modified error handling in `momentum_tick_replay.py` to ensure `TickColumnView` is only referenced if successfully imported, enhancing robustness.

Impact:
- These updates streamline the import process and improve the stability of the momentum trading logic by ensuring that the code handles import errors gracefully.

kis_trader/engine/momentum_engine.py

@@ -33,7 +33,7 @@ from kis_trader.engine.momentum_env_keys import (
     _legacy_float,
 )
 from kis_trader.engine.strategy_eod import is_strategy_eod_bar
-from kis_trader.utils.env import get_env_int
+from kis_trader.utils.env import get_env_from_db, get_env_int
 
 MOMENTUM_STRATEGY_ID = "MOMENTUM"
 

kis_trader/engine/momentum_tick_replay.py

@@ -314,12 +314,12 @@ def try_momentum_sell_on_ticks(
     # 백테 틱재생: 공유메모리 컬럼 뷰면 직접집계(실매 dict 경로 무변경).
     try:
         from kis_trader.backtest.shared_ticks import TickColumnView
-        if isinstance(ticks, TickColumnView):
+    except ImportError:
+        TickColumnView = None  # type: ignore[misc,assignment]
+    if TickColumnView is not None and isinstance(ticks, TickColumnView):
         return _try_momentum_sell_on_ticks_columnar(
             position, ticks, params, is_eod=is_eod, entry_time=entry_time,
         )
-    except Exception:
-        pass
 
     if not ticks:
         return None