add local service proxy with .numa domains

HTTP reverse proxy on port 80 lets developers use clean domain names
(frontend.numa, api.numa) instead of localhost:PORT. Includes WebSocket
upgrade support for HMR, TCP health checks, dashboard UI panel, and
REST API for service management. numa.numa is preconfigured for the
dashboard itself.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Cargo.toml

@@ -18,3 +18,7 @@ toml = "0.8"
 log = "0.4"
 env_logger = "0.11"
 reqwest = { version = "0.12", features = ["rustls-tls"], default-features = false }
+hyper = { version = "1", features = ["client", "http1"] }
+hyper-util = { version = "0.1", features = ["client-legacy", "http1", "tokio"] }
+http-body-util = "0.1"
+futures = "0.3"