feat(kube): implement 44 new Rust K8s commands + helm binary support
New list commands: list_replicationcontrollers, list_poddisruptionbudgets,
list_priorityclasses, list_runtimeclasses, list_leases,
list_mutatingwebhookconfigurations, list_validatingwebhookconfigurations,
list_endpoints, list_endpointslices, list_ingressclasses,
list_namespaces_resource, list_crds, list_custom_resources
New action commands: force_delete_resource, describe_resource,
get_resource_yaml, attach_pod, restart_statefulset, restart_daemonset,
scale_statefulset, scale_replicaset, scale_replicationcontroller,
suspend_cronjob, resume_cronjob, trigger_cronjob,
create_namespace, delete_namespace
Log streaming: stream_pod_logs (tokio task + Tauri events), stop_log_stream
Helm: helm_list_repos, helm_add_repo, helm_update_repos, helm_search_repo,
helm_list_releases, helm_uninstall, helm_rollback
Infrastructure: shell/helm.rs locate_helm(), scripts/download-helm.sh,
AppState.log_streams for stream lifecycle management
363/363 tests passing, zero clippy warnings
Co-Authored-By: TFTSR Engineering <noreply@tftsr.com>
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