feat: Add new files and enhance backtesting functionality

Changes:
- Introduced new files for strategy definitions and study names.
- Enhanced `backtest_web.py` with functions to handle integer display prices and trade data formatting.
- Updated backtesting logic to incorporate end-of-day (EOD) parameters for breakout and momentum strategies.
- Added EOD configuration options in the database and parameter search files.

Impact:
- These changes improve the modularity and usability of the backtesting framework, allowing for better integration of EOD strategies and clearer trade data presentation.

kis_trader/backtest/param_search_apply_snapshot.py

@@ -7,7 +7,10 @@ param_search_apply_snapshot.py — 파라미터 탐색 결과 JSON → insert_en
   MOMENTUM   search_momentum_*.json          top[].merged_params
   SCALP      search_*.json (rsi_oversold)    top[].db_snapshot 우선, 없으면 merged에서 생성
   BREAKOUT   search_breakout_*.json          top[].merged_params
+  BREAKOUT   optuna_breakout_*.json          results[N-1] (Optuna — top 없음)
+  MOMENTUM   optuna_momentum_*.json          results[N-1] (Optuna)
   TAIL       search_tail_*.json              results[N-1].params (정렬된 순서)
+  TAIL       optuna_tail_*.json              results[N-1] (Optuna)
   UPDOW      updow_param_*.json              top[N-1].apply_cfg + tf
 
 사용 예:
@@ -44,6 +47,17 @@ from kis_trader.backtest.backtest_portfolio_common import (  # noqa: E402
 )
 
 
+def _ranked_items(data: Dict[str, Any]) -> List[Dict[str, Any]]:
+    """Grid ``top[]`` 또는 Optuna ``results[]`` — rank 1 = index 0."""
+    top = data.get("top")
+    if isinstance(top, list) and top:
+        return top
+    results = data.get("results")
+    if isinstance(results, list) and results:
+        return results
+    return []
+
+
 def _env_bool_10(v: Any) -> str:
     if isinstance(v, bool):
         return "1" if v else "0"
@@ -61,10 +75,12 @@ def _detect_strategy(data: Dict[str, Any], path: str) -> str:
         return "UPDOW"
     if base.startswith("search_tail_") or base.startswith("tail_search_"):
         return "TAIL"
-    if base.startswith("search_breakout_"):
+    if base.startswith("search_breakout_") or base.startswith("optuna_breakout_"):
         return "BREAKOUT"
-    if base.startswith("search_momentum_"):
+    if base.startswith("search_momentum_") or base.startswith("optuna_momentum_"):
         return "MOMENTUM"
+    if base.startswith("optuna_tail_"):
+        return "TAIL"
 
     if isinstance(data.get("code"), str) and len(str(data.get("code")).strip()) == 6:
         if "tf" in data and isinstance(data.get("top"), list):
@@ -546,16 +562,18 @@ def main(argv: Optional[List[str]] = None) -> int:
             print("⚠️ JSON 에 code 없음 → updow_stock_config 건너뜀")
         return 0
 
-    # ── top[] 기반 (MOMENTUM / SCALP / BREAKOUT) ─────────────────
-    top = data.get("top") or []
-    if not top:
-        print("❌ JSON 에 top 배열이 없습니다.")
+    # ── top[] (Grid) 또는 results[] (Optuna) — MOMENTUM / SCALP / BREAKOUT ──
+    ranked = _ranked_items(data)
+    if not ranked:
+        print("❌ JSON 에 top[] 또는 results[] 배열이 없습니다.")
         return 8
-    if rank > len(top):
-        print(f"❌ rank 범위 초과 (1~{len(top)})")
+    if rank > len(ranked):
+        print(f"❌ rank 범위 초과 (1~{len(ranked)})")
         return 5
 
-    item = top[rank - 1]
+    item = ranked[rank - 1]
+    if str(data.get("engine") or "").lower() == "optuna":
+        print(f"   (Optuna results[{rank - 1}], trial=#{item.get('optuna_trial_number')})")
     pnl = int(item.get("total_pnl") or 0)
     if pnl <= 0 and not args.allow_non_positive_pnl:
         print(f"⚠️ total_pnl={pnl} ≤ 0 → 중단. 적용하려면 --allow-non-positive-pnl")