- Dynamic local port allocation via TcpListener::bind
- Kubectl subprocess spawning with proper cleanup
- Database persistence for clusters and port_forwards
- Cluster health check (kubectl cluster-info)
- Pod discovery (kubectl get pods)
- Comprehensive unit and integration tests
- All 325 Rust tests passing
- All 98 frontend tests passing
- TypeScript type checks passing
- Store kubeconfig content in ClusterClient for future use
- Update ClusterClient to accept kubeconfig_content as Arc<String>
- Update PortForwardSession to include cluster_name for kubectl invocation
