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/tail_backtest_common.py

@@ -346,27 +346,28 @@ def load_tail_candles_by_code(
     peak_sel = ", holding_peak" if has_holding_peak else ""
     ind_cols = ws_candles_select_indicator_cols(db)
 
-    from kis_trader.backtest.bt_candle_source import (
-        fetch_ws_candles_for_code,
-        list_ws_candle_codes,
-    )
+    from kis_trader.backtest.bt_candle_source import fetch_ws_candles_by_code_bulk
 
-    codes = list_ws_candle_codes(db, tail_tf, start_key, end_key)
-
-    # 3분 합성 시 1분만 있는 종목도 후보에 포함
     synth_on = (
         tail_tf == 3
         and get_env_bool("TAIL_BT_SYNTH_3M_FROM_1M", True)
     )
+    loaded_tf = fetch_ws_candles_by_code_bulk(
+        db, tail_tf, start_key, end_key,
+        extra_select=ind_cols,
+        peak_sel=peak_sel,
+        confirmed_only=True,
+    )
+    loaded_1m: Dict[str, List[Dict]] = {}
     if synth_on:
-        try:
-            codes_1m = list_ws_candle_codes(db, 1, start_key, end_key)
-            for c in codes_1m:
-                if c not in codes:
-                    codes.append(c)
-            codes = sorted(set(codes))
-        except Exception:
-            pass
+        loaded_1m = fetch_ws_candles_by_code_bulk(
+            db, 1, start_key, end_key,
+            extra_select=ind_cols,
+            peak_sel=peak_sel,
+            confirmed_only=True,
+        )
+
+    codes = sorted(set(list(loaded_tf.keys()) + list(loaded_1m.keys())))
 
     candles_by_code: Dict[str, List[Dict]] = {}
     total_candles = 0
@@ -374,16 +375,11 @@ def load_tail_candles_by_code(
     synth_filled_total = 0
 
     for code in codes:
-        bars = fetch_ws_candles_for_code(
-            db, code, tail_tf, start_key, end_key,
-            extra_select=ind_cols,
-            peak_sel=peak_sel,
-            confirmed_only=True,
-        )
-
+        bars = list(loaded_tf.get(code) or [])
         if synth_on:
             bars, n_fill = _synth_fill_3m_holes_from_1m(
                 db, code, bars, start_key, end_key, peak_sel=peak_sel,
+                rows_1m=loaded_1m.get(code) or [],
             )
             synth_filled_total += n_fill
 
@@ -428,17 +424,19 @@ def _synth_fill_3m_holes_from_1m(
     end_key: str,
     *,
     peak_sel: str = "",
+    rows_1m: Optional[List[Dict]] = None,
 ) -> Tuple[List[Dict], int]:
     """DB 3분 리스트에 없는 시각만 1분→3분 롤업으로 보강."""
     from kis_trader.engine.candle_rollup import merge_fill_holes, rollup_1m_bars_to_tf
     from kis_trader.backtest.bt_candle_source import fetch_ws_candles_for_code
 
     try:
-        rows_1m = fetch_ws_candles_for_code(
-            db, code, 1, start_key, end_key,
-            peak_sel=peak_sel,
-            confirmed_only=True,
-        )
+        if rows_1m is None:
+            rows_1m = fetch_ws_candles_for_code(
+                db, code, 1, start_key, end_key,
+                peak_sel=peak_sel,
+                confirmed_only=True,
+            )
     except Exception:
         return bars_3m, 0
     if not rows_1m: