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/__tests__/i18n.test.ts

@@ -82,9 +82,16 @@ describe('dictionary parity', () => {
   });
 
   it('leaves no English string untranslated', () => {
-    // Proper nouns and units read the same in both languages; `coverAria` is
-    // pure interpolation with no words of its own.
-    const shared = new Set(['nav.journal', 'journal.title', 'lightbox.iso', 'subpage.coverAria']);
+    // Proper nouns, loanwords and units read the same in both languages;
+    // `coverAria` is pure interpolation with no words of its own.
+    const shared = new Set([
+      'nav.journal',
+      'journal.title',
+      'lightbox.iso',
+      'lightbox.copyLinkShort',
+      'lightbox.downloadShort',
+      'subpage.coverAria',
+    ]);
 
     const identical = enLeaves
       .filter(([path]) => !shared.has(path))