- Add reloadAuth(), reloadForwarding(), reloadAll() methods to AlknetServer
- Add NAPI type definitions: AuthConfigNapi, ForwardingPolicyConfig, ForwardingRuleConfig
- Refactor NapiServerHandler to use ArcSwap<DynamicConfig> for atomic config swaps
- Add ConfigReloadHandle::dynamic_arc() accessor for sharing ArcSwap between NAPI and accept loop
- Add ipnetwork dependency to alknet-napi for TargetPattern CIDR parsing
- Add builder functions for AuthPolicy and ForwardingPolicy from NAPI config types
- All swaps are atomic via ArcSwap per ADR-030