feat: Add DART strategy and related configurations

ㅇ
Changes:
- Introduced the DART strategy to the trading system, including its configuration and integration into the existing framework.
- Updated the database schema to include DART-specific tables for disclosures and watchlists.
- Enhanced the backtesting and parameter search functionalities to support the DART strategy.
- Implemented new rules for browser verification and API interactions to ensure compliance with the updated DART strategy.

Impact:
- These additions expand the trading capabilities of the system, allowing for more comprehensive analysis and execution of DART-related strategies, while maintaining system integrity and performance.

kis_trader/engine/post_sell_candle_backfill.py

@@ -23,7 +23,8 @@ from kis_trader.utils.logger import get_logger
 
 logger = get_logger("kis_trader.post_sell_candle_backfill")
 
-_INSERT_SQL = """
+# 존재 행 OHLCV 덮어쓰기(큰 volume 우선) — freeze OFF 일 때만
+_INSERT_SQL_OVERWRITE = """
     INSERT INTO ws_candles
         (code, timeframe, candle_time, `open`, high, low, close,
          volume, rsi_2, rsi_3, rsi_5, is_confirmed, source, updated_at)
@@ -37,11 +38,31 @@ _INSERT_SQL = """
         source=IF(VALUES(volume) > volume, VALUES(source), source)
 """
 
+# freeze ON: 없는 분만 INSERT. 확정·미확정 행이 있으면 OHLCV 유지 (구멍 메우기 전용)
+_INSERT_SQL_FREEZE = """
+    INSERT INTO ws_candles
+        (code, timeframe, candle_time, `open`, high, low, close,
+         volume, rsi_2, rsi_3, rsi_5, is_confirmed, source, updated_at)
+    VALUES
+        (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)
+    ON DUPLICATE KEY UPDATE
+        candle_time=candle_time
+"""
+
 
 def post_sell_candle_backfill_enabled() -> bool:
     return get_env_bool("POST_SELL_CANDLE_BACKFILL", True)
 
 
+def _candle_freeze_on_confirm() -> bool:
+    """docs/정합성.md — 확정 후 REST/백필이 봉을 키우지 않음. 기본 true."""
+    return get_env_bool("WS_CANDLE_FREEZE_ON_CONFIRM", True)
+
+
+def _insert_sql() -> str:
+    return _INSERT_SQL_FREEZE if _candle_freeze_on_confirm() else _INSERT_SQL_OVERWRITE
+
+
 def post_sell_candle_rollup_3m_enabled() -> bool:
     """1분 채운 뒤 3분 롤업 UPSERT (꼬리 TF 정합)."""
     return get_env_bool("POST_SELL_CANDLE_ROLLUP_3M", True)
@@ -154,10 +175,11 @@ def _upsert_df_rows(db: Any, code: str, tf_min: int, rows: List[Dict[str, Any]])
             continue
     if not payload:
         return 0
+    sql = _insert_sql()
     with db.conn._lock:
         db.conn._ensure_connected()
         cur = db.conn._conn.cursor()
-        cur.executemany(_INSERT_SQL, payload)
+        cur.executemany(sql, payload)
         db.conn._conn.commit()
     return len(payload)