Implement wraith serve CLI subcommand with clap
Add serve subcommand with all flags matching server.md CLI interface:
--key, --authorized-keys, --cert-authority, --transport, --listen,
--tls-cert, --tls-key, --acme-domain, --stealth, --proxy,
--iroh-relay, --max-connections-per-ip, --max-auth-attempts.
--key is required, --transport defaults to tcp, --listen defaults to
0.0.0.0:22. --stealth validates TLS transport. --acme-domain requires
acme feature flag. --transport iroh prints endpoint ID on startup.
Key inputs accept file paths. Errors reported to stderr with non-zero
exit code. Also adds acme feature flag and rustls-pemfile/rustls-pki-types
dependencies for TLS cert loading.
glm-5.1
62d57dd477