chore: 更新 .env.example 文件，调整 Maker 策略的损失限制参数以优化风险管理

.env.example

@@ -30,7 +30,7 @@ KLINE_INTERVAL=1m                       # Kline interval (e.g., 1m/3m/5m)
 MAX_CLOSE_SLIPPAGE_PCT=0.05             # Max allowed deviation vs mark when closing (0.05 => 5%)
 
 # Maker-only settings
-MAKER_LOSS_LIMIT=0.03                   # Maker loss cap (USDT). Defaults to LOSS_LIMIT if unset
+MAKER_LOSS_LIMIT=0.05                   # Maker loss cap (USDT). Defaults to LOSS_LIMIT if unset
 MAKER_BID_OFFSET=0                      # Bid quote offset from top bid (USDT)
 MAKER_ASK_OFFSET=0                      # Ask quote offset from top ask (USDT)
 MAKER_REFRESH_INTERVAL_MS=1500          # Maker refresh cadence (ms)

src/exchanges/grvt/gateway.ts

@@ -840,7 +840,11 @@ function normalizeCookieValue(value: string): string {
 }
 
 function defaultLogger(context: string, error: unknown): void {
-  console.error(`[GrvtGateway] ${context} failed`, error);
+  // Suppress direct console output from GRVT gateway. Strategy layers already
+  // record failures into the recent events trade log as warnings.
+  // Intentionally no-op to avoid noisy CLI logs.
+  void context;
+  void error;
 }
 
 function parseSetCookieHeader(