Preserve originating views through detail navigation

src/routes/campaigns/+page.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+    import { contextHref } from '$lib/navigation-context.js';
     import { timeFormat } from '$ui/stores/time-zone.js';
     import { onMount } from 'svelte';
     import { page } from '$app/stores';
@@ -217,7 +218,7 @@
         {#if flash && flashId === d.id}<div class="result" class:result-error={flashError} role={flashError ? 'alert' : 'status'}>{flash}</div>{/if}
         <div class="row-head">
             <div class="row-head-l">
-                <a class="action" href="/campaigns/{d.id}">{d.action} campaign <span class="sr-only">{d.id}</span></a>
+                <a class="action" href={contextHref(`/campaigns/${d.id}`, $page.url)}>{d.action} campaign <span class="sr-only">{d.id}</span></a>
                 {#if d.action === 'promote' || d.action === 'rollback'}
                     <span class="target">{scriptSummary(d)}</span>
                 {/if}