Function buildAuthenticatorHandler

buildAuthenticatorHandler(
    options: BuildAuthenticatorHandlerOptions,
): {
    handler: "authenticator";
    portal_name?: string;
    route_matcher?: string;
}
Build an authenticator portal handler

Creates a caddy-security authenticator handler that serves the login portal and handles credential validation.
Parameters
- options: BuildAuthenticatorHandlerOptions
  Handler options
Returns { handler: "authenticator"; portal_name?: string; route_matcher?: string }
Validated authenticator handler configuration
Example
```
import { buildAuthenticatorHandler } from "@.../caddy-api-client/plugins/caddy-security";

const handler = buildAuthenticatorHandler({
  portalName: "myportal",
});

// Use in a route
const route: CaddyRoute = {
  match: [{ host: ["auth.example.com"] }],
  handle: [handler],
  terminal: true,
};
```
- Defined in src/plugins/caddy-security/builders.ts:849