Per ADR-035: split Interface trait into StreamInterface (stream-based, SSH/RawFraming)
and MessageInterface (request/response, HTTP/DNS). Remove TransportKind::Dns (DNS is
a MessageInterface). Change WebTransport { host } to { server_name: Option<String> }.
Restructure ListenerConfig from flat struct to enum with Stream/Http/Dns variants.
- SshInterface implements Interface trait with accept() method
- SshSession implements InterfaceSession trait (stub for call protocol events)
- RawFramingInterface is type-only stub (Phase 4+ for DNS, WebTransport)
- TransportKind consolidated into transport module with Display, PartialEq, Eq
- ListenerConfig gains interface_kind field for (Transport, Interface) pairs
- SshInterface wraps existing russh handler logic (SshHandler)
- Auth delegation through IdentityProvider (not embedded in SshInterface)
- Channel routing through session to Layer 3 (forwarding policy)
- Server accept loop uses (Transport, Interface) pairs
Per ADR-026: SSH is Layer 2, not Layer 1. This is the highest-risk Phase 1
task, implementing the Interface trait to separate transport from interface.
- Add ListenerConfig struct with transport_kind, listen_addr, per-transport config
- Add Dns and WebTransport variants to TransportKind (tags only, no behavior)
- Add .listeners() builder method to ServeOptions for multi-listener config
- Keep .transport_mode() backwards compatible (creates single-element listeners vec)
- Update Server::run() to use listeners from Server struct (first listener)
- Add Server::listeners() accessor for multi-transport listener configs
- Update StaticConfig to support listeners field, converted from ServeOptions
- All listeners share Arc<ArcSwap<DynamicConfig>>, ConnectionRateLimiter, and IdentityProvider
- Graceful shutdown terminates accept loop via existing shutdown signal
- TOML [[listeners]] array-of-tables syntax supported via ListenerConfig in StaticConfig
- Add comprehensive tests for ListenerConfig, multi-listener ServeOptions, Server creation
Split alknet-core configuration into StaticConfig (immutable after startup)
and DynamicConfig (hot-reloadable at runtime via ArcSwap).
- Add StaticConfig struct in config/static_config.rs with all fields per ADR-030
- Add DynamicConfig struct with AuthPolicy, ForwardingPolicy, RateLimitConfig
- Add ForwardingPolicy with allow_all()/deny_all() defaults (ADR-031)
- Add ConfigReloadHandle with reload() method for runtime config updates
- Replace Arc<ServerAuthConfig> with Arc<ArcSwap<DynamicConfig>> in ServerHandler
- Add config_reload_handle() to Server for obtaining reload handles
- Add AuthPolicy with authenticate_publickey/authenticate_certificate methods
- All existing tests pass with the new config structure
- Default DynamicConfig produces identical behavior to current code
