config: lower threshold 0.10->0.05, arb 0.03->0.02, amount 0->0

exchange/hyperliquid_trade.go

@@ -121,9 +121,11 @@ func (h *HyperLiquidTrade) PlaceMarketOrder(coin, side, sz string) (string, erro
 	return string(respJSON), nil
 }
 
-// GetTradeFee parses the MarketOpen JSON response to extract filled size and
-// estimates the actual fee from the exchange taker rate.
-func (h *HyperLiquidTrade) GetTradeFee(orderResponseJSON string, takerFeePct float64) (feeUSD float64, err error) {
+// EstimateFeeFromResponse calculates the fee using the response's filled size × price
+// × configured taker rate. This is NOT an actual fee from HL — HL does not return
+// fee amounts in the order response. The result is equivalent to estimating from
+// TradeAmountUSD, but more accurate for partial fills since it uses actual filled sz/px.
+func (h *HyperLiquidTrade) EstimateFeeFromResponse(orderResponseJSON string, takerFeePct float64) (feeUSD float64, err error) {
 	var resp struct {
 		Statuses []struct {
 			Filled *struct {