Function fetchBal

src/components/WalletButton.tsx:303–316

(force = false)

    let seq = 0;

    const fetchBal = async (force = false) => {
      const mySeq = ++seq;
      try {
        // Public GET endpoint — no auth required, reads on-chain USDC.e balance
        const url = `/api/trade/balance?address=${proxyAddr}${force ? "&force=1" : ""}`;
        const res = await fetch(url);
        if (!res.ok) return;
        const data = await res.json();
        if (!cancelled && mySeq === seq && data.balance !== undefined) {
          setPolyBalance(data.balance);
          try { sessionStorage.setItem("pw:balance", String(data.balance)); } catch {}
        }
      } catch { /* ignore */ }
    };

    const fetchPortfolio = async () => {
      try {