List Accounts

GET /v1/accounts?limit=50&cursor=...

{
  "accounts": [
    {
      "accountId": "acc_8f3a...",
      "depositAddress": "0xC0FFEE...",
      "depositChains": ["base", "ethereum", "polygon"],
      "balance": {
        "available": "1240.50",
        "locked": "85.00",
        "currency": "USDC"
      },
      "createdAt": "2026-05-06T12:00:00Z"
    }
  ],
  "nextCursor": null
}