- Add tokio signal handling for SIGHUP
- Implement thread-safe TLS acceptor reloading with Mutex
- Modify main loop to handle signals alongside connections
- Update systemd service (already had ExecReload)
- Add certbot hook script documentation to INSTALL.md
- Enable zero-downtime certificate renewal support
- Replace 'host' config with separate 'bind_host' and 'hostname'
- bind_host: IP/interface for server binding (default 0.0.0.0)
- hostname: Domain for URI validation (required)
- Update all parsing and validation code
- Create dist/ directory with systemd service, config, and install guide
- Add comprehensive INSTALL.md with setup instructions
