Add sidebar navigation and global command search

src/routes/servers/[name]/+page.svelte

@@ -6,7 +6,7 @@
     import { freshStatusTimestamp } from '$lib/server-freshness.js';
     import { serverSection, serverSectionAnchor } from '$lib/server-sections.js';
     import { contextHref } from '$lib/navigation-context.js';
-    import BackLink from '$ui/components/BackLink.svelte';
+    import Breadcrumbs from '$ui/components/primitives/Breadcrumbs.svelte';
     let { data }: { data: import('./$types').PageData } = $props();
     import RuntimeVersion from '$ui/components/RuntimeVersion.svelte';
     import MatchHistory from '$ui/components/MatchHistory.svelte';
@@ -224,7 +224,7 @@
 {#if server}
     <div class="server-page" style="view-transition-name: server-{name.replace(/[^a-z0-9_-]/gi, '-')};">
         <header class="instance-header">
-            <BackLink fallback="/" />
+            <Breadcrumbs items={[{ label: 'Fleet', href: '/' }, { label: serverTitle(name) }]} />
             <SectionHeader title={serverTitle(server.name)}>
                 {#snippet actions()}
                     <details class="server-actions"><summary>Instance actions</summary><div class="action-menu">{#each runtimeActions as action}<Button onclick={() => { lifecycleAction = action; lifecycleOpen = true; }}>{actionLabels[action]}</Button>{/each}<Button variant="danger" onclick={() => destroyOpen = true}>Queue instance removal</Button></div></details>