feat: Enhance Optuna integration and logging for backtesting framework

Changes:
- Added new API endpoints for continuing and confirming Optuna jobs, allowing for better management of ongoing studies.
- Introduced detailed logging for tick feed tracking and order book processing, improving traceability of vendor performance during backtests.
- Updated database schema to include new fields for managing Optuna study results, enhancing the ability to track study progress and outcomes.
- Refactored existing functions to utilize the new logging and tracking features, ensuring consistency across the backtesting framework.

Impact:
- These enhancements improve the robustness and transparency of the Optuna backtesting process, facilitating better analysis and optimization of trading strategies.

kis_trader/backtest/trigger_snapshot_loader.py

@@ -13,6 +13,7 @@ from kis_trader.engine.feed_fallback import (
     live_feed_fallback_max_age_sec,
     orderbook_row_lag_seconds,
 )
+from kis_trader.utils.env import get_env_bool, get_env_from_db
 from kis_trader.ws.orderbook_cache import OrderbookSnapshot, orderbook_snapshot_from_storage
 from kis_trader.ws.program_cache import ProgramSnapshot, program_snapshot_from_storage
 from kis_trader.ws.trigger_eval_recorder import FILTER_EVAL_SOURCE
@@ -661,6 +662,13 @@ def load_trigger_snapshots_by_code(
     meta["log_verdict_rows"] = sum(
         len(lst) for cm in log_verdict.values() for lst in cm.values()
     )
+    # 옵투나/백테: 호가 스냅 벤더 비율 (kiwoom_0d / ls_uh1 / log_backfill …)
+    try:
+        from kis_trader.backtest.optuna_feed_trace import log_bt_orderbook_feed_trace
+
+        log_bt_orderbook_feed_trace(ob_by_code, meta, context="호가로드")
+    except Exception as e:
+        logger.debug("호가 피드추적 로그 스킵: %s", e)
     return ob_by_code, pg_by_code, meta