Add autoscaling dry run and policy controls

src/routes/+page.svelte

@@ -143,6 +143,7 @@
 <section class="page">
     <SectionHeader title="Fleet" subtitle="Live health, players, and server operations.">
         {#snippet actions()}
+            <Button href="/autoscaling" variant="ghost" size="sm">Autoscaling</Button>
             <Button variant="ghost" size="sm" loading={$fleetRefreshing} onclick={() => void refreshFleet()}>Refresh</Button>
             {#if canOperate}<Button variant="primary" onclick={() => launch()}>Create server</Button>{/if}
         {/snippet}