Remove standalone Activity log page (Refs #153)

src/routes/hosts/operations/+page.svelte

@@ -141,7 +141,7 @@
 <section class="page" aria-busy={changingPage}>
     <SectionHeader
         title="Host operation history"
-        eyebrow="Operations"
+        eyebrow="Hosts"
         subtitle="Remote operations, newest first. Filtered views retain their host and server context."
     >
         {#snippet actions()}<Freshness
@@ -152,7 +152,7 @@
             />{/snippet}
     </SectionHeader>
     {#if data.scope.operation || $page.url.searchParams.has('returnTo')}<BackLink
-            fallback={data.scope.operation ? '/activity' : '/hosts'}
+            fallback={data.scope.operation ? allOperationsHref : '/hosts'}
         />{/if}
     {#if data.scope.operation}<div class="selected-operation">
             <div><strong>Selected host operation</strong><code>{data.scope.operation}</code></div>