The built-in HTTP dashboard: a GenServer that listens on a port and serves the operational UI and metrics endpoints over plain HTTP.

It accepts connections on its listen socket and handles each request in a spawned process, wrapping the routed handlers with authentication (Malachi.Auth), per-IP rate limiting (Malachi.RateLimiter), security headers (Malachi.Dashboard.SecurityHeaders), and audit logging (Malachi.AuditLog).