setEndpointOverride method
Override the API endpoint URL. When set, all API calls use this URL
instead of the realm-based default (e.g. for local development with ngrok).
Pass null to clear the override and revert to the default.
Implementation
void setEndpointOverride(String? url) {
if (url != null && !url.startsWith('https://')) {
debugPrint('[Releva] Warning: endpoint override uses insecure scheme — use https:// in production');
}
_endpointOverride = url;
}