fix: HL balance now reads spot USDC via SpotUserState

HL testnet USDC lives in the spot account, not the perp clearinghouse.
GetBalance() was calling UserState() (perp clearinghouseState), which
returned /usr/bin/bash. Switched to SpotUserState() and parse USDC.total - USDC.hold.

Also cleaned up .gitignore to exclude .env, binary, logs, data/.

trader.go

@@ -248,9 +248,34 @@ func NewTrader(cfg *Config, database *db.DB) *Trader {
 		}
 	}
 
+	// Fetch real balances from exchanges
+	t.fetchBalances()
+
 	return t
 }
 
+func (t *Trader) fetchBalances() {
+	// Bitget
+	if t.bitget != nil {
+		if bal, err := t.bitget.GetBalance(); err == nil {
+			t.exchangeFunds[ExBitget] = &ExchangeFund{Balance: bal}
+			log.Printf("[Funds] Bitget balance: $%.2f", bal)
+		} else {
+			log.Printf("[Funds] Bitget balance fetch failed: %v (using default)", err)
+		}
+	}
+
+	// HyperLiquid
+	if t.hyperliquid != nil && t.hyperliquid.IsConfigured() {
+		if bal, err := t.hyperliquid.GetBalance(); err == nil {
+			t.exchangeFunds[ExHyperLiquid] = &ExchangeFund{Balance: bal}
+			log.Printf("[Funds] HyperLiquid balance: $%.2f", bal)
+		} else {
+			log.Printf("[Funds] HyperLiquid balance fetch failed: %v (using default)", err)
+		}
+	}
+}
+
 func (t *Trader) IsConfigured() bool {
 	switch {
 	case t.cfg.TestMode: