feat: loading skeleton on the library page

The library loader streams its one-shot bundle (also the auth gate), so the
active sub-tab shows a skeleton while it loads — a grid skeleton for the
Collections tab, a row skeleton for Bookmarks/History/Page-tags — instead of
only the global nav bar.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

backend/Cargo.lock

@@ -1558,7 +1558,7 @@ checksum = "c41e0c4fef86961ac6d6f8a82609f55f31b05e4fce149ac5710e439df7619ba4"
 
 [[package]]
 name = "mangalord"
-version = "0.120.0"
+version = "0.121.0"
 dependencies = [
  "anyhow",
  "argon2",

backend/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "mangalord"
-version = "0.120.0"
+version = "0.121.0"
 edition = "2021"
 default-run = "mangalord"
 

frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "mangalord-frontend",
-  "version": "0.120.0",
+  "version": "0.121.0",
   "private": true,
   "type": "module",
   "scripts": {

frontend/src/routes/library/+page.svelte

@@ -7,6 +7,8 @@
     import CollectionsGrid from '$lib/components/CollectionsGrid.svelte';
     import PageTagsList from '$lib/components/PageTagsList.svelte';
     import HistoryList from '$lib/components/HistoryList.svelte';
+    import ListRowSkeleton from '$lib/components/ListRowSkeleton.svelte';
+    import MangaGridSkeleton from '$lib/components/MangaGridSkeleton.svelte';
 
     let { data } = $props();
 
@@ -66,37 +68,42 @@
     />
 </div>
 
-{#if !data.authenticated}
+{#await data.result}
+    {#if activeTab === 'collections'}
+        <MangaGridSkeleton count={6} />
+    {:else}
+        <ListRowSkeleton />
+    {/if}
+{:then r}
+    {#if !r.authenticated}
         <p class="hint" data-testid="library-signin">
             <a href="/login?next=/library">Sign in</a> to see your library.
         </p>
-{:else if data.error}
+    {:else if r.error}
         <p class="error" role="alert" data-testid="library-error">
-        Couldn't load library: {data.error}
+            Couldn't load library: {r.error}
         </p>
     {:else if activeTab === 'bookmarks'}
-    {#if data.bookmarks.length === 0}
+        {#if r.bookmarks.length === 0}
             <p class="hint" data-testid="library-bookmarks-empty">No bookmarks yet.</p>
         {:else}
-        <BookmarkList bookmarks={data.bookmarks} testid="library-bookmark-list" />
+            <BookmarkList bookmarks={r.bookmarks} testid="library-bookmark-list" />
         {/if}
     {:else if activeTab === 'collections'}
-    {#if data.collections.length === 0}
+        {#if r.collections.length === 0}
             <p class="hint" data-testid="library-collections-empty">
                 You don't have any collections yet. Open any manga and use
                 <strong>Add to collection</strong> to start one.
             </p>
         {:else}
-        <CollectionsGrid collections={data.collections} />
+            <CollectionsGrid collections={r.collections} />
         {/if}
     {:else if activeTab === 'page-tags'}
-    <PageTagsList
-        initialItems={data.pageTags}
-        initialDistinct={data.distinctPageTags}
-    />
+        <PageTagsList initialItems={r.pageTags} initialDistinct={r.distinctPageTags} />
     {:else}
-    <HistoryList entries={data.history} onClear={clearOne} testid="library-history" />
+        <HistoryList entries={r.history} onClear={clearOne} testid="library-history" />
     {/if}
+{/await}
 
 <style>
     .library-heading {

frontend/src/routes/library/+page.ts

@@ -26,6 +26,10 @@ export const load: PageLoad = async () => {
         distinctPageTags: [] as Awaited<ReturnType<typeof listMyDistinctPageTags>>,
         error: null as string | null
     };
+    // Streamed so the active sub-tab shows a skeleton while the one-shot fetch
+    // (also the auth gate) is in flight.
+    return {
+        result: (async () => {
             try {
                 const [bookmarks, collections, history, pageTags, distinctPageTags] =
                     await Promise.all([
@@ -52,4 +56,6 @@ export const load: PageLoad = async () => {
                 }
                 throw e;
             }
+        })()
+    };
 };