Preserve originating views through detail navigation

src/routes/collections/+page.svelte

@@ -1,4 +1,5 @@
 <script lang="ts">
+    import { contextHref } from '$lib/navigation-context.js';
     import { onMount } from 'svelte';
     import { page } from '$app/stores';
     import { goto } from '$app/navigation';
@@ -134,7 +135,7 @@
         {#if launchesLoading}<p>Loading collection launches…</p>
         {:else if visibleLaunches.length}
             <div class="launches">{#each visibleLaunches.slice(0,launchLimit) as collection (collection.id)}
-                <a class="collection-row" href="/collections/launches/{collection.id}">
+                <a class="collection-row" href={contextHref(`/collections/launches/${collection.id}`, $page.url)}>
                     <div class="row-head"><strong>{collection.name}</strong><Badge variant={collection.active ? 'info' : collection.failed ? 'danger' : 'online'}>{collection.active ? collection.provisioning + collection.verifying ? collection.mode === 'exact' ? 'Applying collection' : 'Launching' : 'Queued' : collection.failed ? 'Needs attention' : 'Completed'}</Badge></div>
                     <div class="collection-counts"><span><strong>{collection.done} / {collection.total}</strong> {collection.mode === 'exact' ? 'completed' : 'ready'}</span>{#if collection.provisioning + collection.verifying}<span>{collection.provisioning + collection.verifying} {collection.mode === 'exact' ? 'in progress' : 'launching'}</span>{/if}{#if collection.queued}<span>{collection.queued} queued</span>{/if}{#if collection.failed}<span class="error">{collection.failed} need attention</span>{/if}</div>
                     <div class="collection-meter" aria-hidden="true"><span class="verified" style:width={`${collection.done / (collection.total || 1) * 100}%`}></span><span class="unsuccessful" style:width={`${collection.failed / (collection.total || 1) * 100}%`}></span></div>