release: v0.13.0 (#535)

Twenty-nine commits since v0.12.0. See CHANGELOG.md for the full list
and the upgrade notes.

Ten additions — the SEO package (site URL, robots.txt, sitemap.xml,
JSON-LD), slideshow mode, opt-in original downloads, copy-link,
previous/next album navigation, alt text from the Immich description,
per-album location precision, the update notice, a Help tab, and a
subpage cover grid separate from its photo grid. Two fixes: CJK album
slugs, and the lightbox control bar.

Photo of the Day (#476) was built on `dev` and reverted as not planned;
it never appears in a release.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

https://claude.ai/code/session_01DmsHVRL9yQvckUB1ZpVWre

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: ralksta <ralksta@users.noreply.github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

lib/siteShape.ts

@@ -0,0 +1,50 @@
+/**
+ * Build the description of the site that `publicPaths()` reasons about (#472).
+ *
+ * Kept apart from the pure rules so the exclusions stay testable without a
+ * running Immich, and so the sitemap and the feed cannot answer the visibility
+ * question differently.
+ */
+
+import { getConfig } from './config';
+import { immich } from './immich';
+import { isProtected, isSiteLocked } from './auth';
+import { listJournalEntries } from './admin/journal-service';
+import type { SiteShape, PublicAlbum } from './publicPages';
+
+export async function buildSiteShape(): Promise<SiteShape> {
+  const config = getConfig();
+
+  // Allowlisted albums only — getAlbums() already drops everything else, so an
+  // album that was never published cannot reach a listing through here.
+  const albums = await immich.getAlbums();
+  const byId = new Map(albums.map((album) => [album.id, album]));
+  const resolve = (ids: string[]): PublicAlbum[] =>
+    ids
+      .map((id) => byId.get(id))
+      .filter((album): album is NonNullable<typeof album> => Boolean(album))
+      .map((album) => ({ id: album.id, slug: album.slug }));
+
+  const journal = await listJournalEntries().catch(() => []);
+
+  return {
+    siteLocked: isSiteLocked(),
+    subpages: config.subpages.map((subpage) => ({
+      slug: subpage.slug,
+      enabled: subpage.enabled !== false,
+      hidden: subpage.hidden === true,
+      isProtected: isProtected(subpage.slug, 'subpage'),
+      albums: resolve(subpage.albumIds),
+    })),
+    standaloneAlbums: resolve(config.standaloneAlbums),
+    journal: journal.map((entry) => ({
+      slug: entry.slug,
+      draft: entry.frontmatter.draft === true,
+    })),
+    isAlbumProtected: (albumId) => isProtected(albumId, 'album'),
+    aboutEnabled: config.aboutEnabled,
+    mapEnabled: config.map,
+    // There is no switch for the journal; it exists when it has entries.
+    journalEnabled: journal.length > 0,
+  };
+}