Create or rotate account API credentials.

Quickstart:

1. Call this endpoint with your regular bearer token.
2. Save the returned api_key and client_secret immediately.
3. Exchange them once at POST /account/api-access/token.
4. Use the returned bearer token on all /api requests.

Important:

• The raw client_secret is only returned once.
• Rotating credentials revokes the previously active credential.

Example:

curl -X POST "$BASE_URL/account/api-access/credentials/rotate" \
  -H "Authorization: Bearer <token>"