Get Specific Platform Accounts

// GET /accounts/{platform}/{account_type}
// See cURL example for request shape.

[
  {
    "id": "acc_888",
    "platform": "facebook",
    "accountType": "page",
    "name": "Business Page",
    "accountId": "FB123",
    "authConnectionId": "conn_123",
    "createdAt": "2026-03-25T10:00:00Z"
  }
]