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/engine/tail_tick_replay.py

@@ -144,7 +144,10 @@ def align_entry_price_from_ticks(
     ticks: List[Dict[str, Any]],
     fallback_open: float,
 ) -> Tuple[float, str]:
-    """신호 직후(진입봉) 첫 체결 틱 가격 (없으면 시가)."""
+    """신호 직후(진입봉) 첫 체결 틱 가격 (없으면 시가).
+
+    Returns source: ``ws_ticks:<vendor>`` | ``ohlc_open`` (옵투나 피드 추적용).
+    """
     fo = float(fallback_open or 0)
     if not ticks:
         return fo, "ohlc_open"
@@ -152,18 +155,31 @@ def align_entry_price_from_ticks(
     try:
         from kis_trader.backtest.shared_ticks import TickColumnView
         if isinstance(ticks, TickColumnView):
-            _price = ticks.owner._price
+            owner = ticks.owner
+            _price = owner._price
+            _source = getattr(owner, "_source", None)
             for i in ticks.iter_idx():
                 price = float(_price[i])
                 if price > 0:
-                    return price, "ws_ticks"
+                    vendor = ""
+                    if _source is not None:
+                        try:
+                            vendor = _source[i].decode("utf-8").strip().lower()
+                        except Exception:
+                            vendor = ""
+                    return price, (f"ws_ticks:{vendor}" if vendor else "ws_ticks")
             return fo, "ohlc_open"
     except Exception:
         pass
     for tick in ticks:
         price = float(tick.get("price") or 0)
         if price > 0:
-            return price, "ws_ticks"
+            try:
+                from kis_trader.backtest.optuna_feed_trace import tick_source_label
+
+                return price, tick_source_label(tick)
+            except Exception:
+                return price, "ws_ticks"
     return fo, "ohlc_open"