feat: initial kube-vip Headlamp plugin

Headlamp plugin providing visibility into kube-vip virtual IP and load
balancer deployments. Features:

- Overview dashboard with deployment status, VIP mode, leader election
- Services page with LoadBalancer VIP assignments and detail panels
- Nodes page showing kube-vip pod status and leader designation
- Configuration page with DaemonSet config, IP pools, leases
- Service detail section injected into native Headlamp Service views

Read-only plugin — no cluster write operations. Uses standard K8s
resources (no CRDs): Services, Nodes, Pods, DaemonSets, Leases,
ConfigMaps with kube-vip.io/* annotations.

74 tests across 7 test files. All tsc/lint/format/test checks pass.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/index.tsx

@@ -0,0 +1,128 @@
+/**
+ * headlamp-kube-vip-plugin — entry point.
+ *
+ * Registers sidebar entries, routes, and detail view sections for
+ * kube-vip virtual IP and load balancer visibility in Headlamp.
+ */
+
+import {
+  registerDetailsViewSection,
+  registerRoute,
+  registerSidebarEntry,
+} from '@kinvolk/headlamp-plugin/lib';
+import React from 'react';
+import { KubeVipDataProvider } from './api/KubeVipDataContext';
+import ConfigPage from './components/ConfigPage';
+import NodesPage from './components/NodesPage';
+import OverviewPage from './components/OverviewPage';
+import ServiceDetailSection from './components/ServiceDetailSection';
+import ServicesPage from './components/ServicesPage';
+
+// ---------------------------------------------------------------------------
+// Sidebar entries
+// ---------------------------------------------------------------------------
+
+registerSidebarEntry({
+  parent: null,
+  name: 'kube-vip',
+  label: 'kube-vip',
+  url: '/kube-vip',
+  icon: 'mdi:ip-network',
+});
+
+registerSidebarEntry({
+  parent: 'kube-vip',
+  name: 'kube-vip-overview',
+  label: 'Overview',
+  url: '/kube-vip',
+  icon: 'mdi:view-dashboard',
+});
+
+registerSidebarEntry({
+  parent: 'kube-vip',
+  name: 'kube-vip-services',
+  label: 'Services',
+  url: '/kube-vip/services',
+  icon: 'mdi:lan',
+});
+
+registerSidebarEntry({
+  parent: 'kube-vip',
+  name: 'kube-vip-nodes',
+  label: 'Nodes',
+  url: '/kube-vip/nodes',
+  icon: 'mdi:server',
+});
+
+registerSidebarEntry({
+  parent: 'kube-vip',
+  name: 'kube-vip-config',
+  label: 'Configuration',
+  url: '/kube-vip/config',
+  icon: 'mdi:cog',
+});
+
+// ---------------------------------------------------------------------------
+// Routes
+// ---------------------------------------------------------------------------
+
+registerRoute({
+  path: '/kube-vip',
+  sidebar: 'kube-vip-overview',
+  name: 'kube-vip-overview',
+  exact: true,
+  component: () => (
+    <KubeVipDataProvider>
+      <OverviewPage />
+    </KubeVipDataProvider>
+  ),
+});
+
+registerRoute({
+  path: '/kube-vip/services',
+  sidebar: 'kube-vip-services',
+  name: 'kube-vip-services',
+  exact: true,
+  component: () => (
+    <KubeVipDataProvider>
+      <ServicesPage />
+    </KubeVipDataProvider>
+  ),
+});
+
+registerRoute({
+  path: '/kube-vip/nodes',
+  sidebar: 'kube-vip-nodes',
+  name: 'kube-vip-nodes',
+  exact: true,
+  component: () => (
+    <KubeVipDataProvider>
+      <NodesPage />
+    </KubeVipDataProvider>
+  ),
+});
+
+registerRoute({
+  path: '/kube-vip/config',
+  sidebar: 'kube-vip-config',
+  name: 'kube-vip-config',
+  exact: true,
+  component: () => (
+    <KubeVipDataProvider>
+      <ConfigPage />
+    </KubeVipDataProvider>
+  ),
+});
+
+// ---------------------------------------------------------------------------
+// Detail view section — Service pages (LoadBalancer type)
+// ---------------------------------------------------------------------------
+
+registerDetailsViewSection(({ resource }) => {
+  if (resource?.kind !== 'Service') return null;
+  return (
+    <KubeVipDataProvider>
+      <ServiceDetailSection resource={resource} />
+    </KubeVipDataProvider>
+  );
+});