feat: add multi-symbol config (symbols list, correlation_symbols, max_same_direction)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/config.py

@@ -10,8 +10,11 @@ class Config:
     api_key: str = ""
     api_secret: str = ""
     symbol: str = "XRPUSDT"
+    symbols: list = None
+    correlation_symbols: list = None
     leverage: int = 10
     max_positions: int = 3
+    max_same_direction: int = 2
     stop_loss_pct: float = 0.015    # 1.5%
     take_profit_pct: float = 0.045  # 4.5% (3:1 RR)
     trailing_stop_pct: float = 0.01  # 1%
@@ -31,3 +34,15 @@ class Config:
         self.margin_min_ratio = float(os.getenv("MARGIN_MIN_RATIO", "0.20"))
         self.margin_decay_rate = float(os.getenv("MARGIN_DECAY_RATE", "0.0006"))
         self.ml_threshold = float(os.getenv("ML_THRESHOLD", "0.55"))
+        self.max_same_direction = int(os.getenv("MAX_SAME_DIRECTION", "2"))
+
+        # symbols: SYMBOLS 환경변수 우선, 없으면 SYMBOL에서 변환
+        symbols_env = os.getenv("SYMBOLS", "")
+        if symbols_env:
+            self.symbols = [s.strip() for s in symbols_env.split(",") if s.strip()]
+        else:
+            self.symbols = [self.symbol]
+
+        # correlation_symbols
+        corr_env = os.getenv("CORRELATION_SYMBOLS", "BTCUSDT,ETHUSDT")
+        self.correlation_symbols = [s.strip() for s in corr_env.split(",") if s.strip()]