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

---------

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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/i18n/locales/en.ts

@@ -29,6 +29,11 @@ export const en = {
     photos: (n: number) => plural(n, 'photo', 'photos'),
     albums: (n: number) => plural(n, 'album', 'albums'),
     collections: (n: number) => plural(n, 'collection', 'collections'),
+    prevAlbum: 'Previous album',
+    nextAlbum: 'Next album',
+    prevAlbumAria: (name: string) => `Previous album: ${name}`,
+    nextAlbumAria: (name: string) => `Next album: ${name}`,
+    albumNavAria: 'Album navigation',
     loadingGallery: 'Loading gallery',
     loadingPhotos: 'Loading photos',
   },
@@ -123,11 +128,25 @@ export const en = {
     iso: 'ISO',
     location: 'Location',
     noExif: 'No EXIF data available',
+    copyLink: 'Copy link to this photo',
+    copyLinkTitle: 'Copy link to this photo (c)',
+    copyLinkShort: 'Link',
+    copied: 'Copied',
+    copyManual: 'Copy this link',
     shortcuts: 'Keyboard shortcuts',
     shortcutNavigate: 'Previous / next photo',
     shortcutInfo: 'Photo info',
     shortcutFullscreen: 'Fullscreen',
     shortcutExitFullscreen: 'Leave fullscreen',
+    download: 'Download the original file',
+    downloadTitle: 'Download the original file (d)',
+    downloadShort: 'Original',
+    shortcutDownload: 'Download the original',
+    shortcutSlideshow: 'Slideshow',
+    shortcutSlideshowRunning: (seconds: number) => `Slideshow — every ${seconds}s`,
+    slideshowStopped: 'Slideshow stopped',
+    slideshowRunning: (seconds: number) => `Slideshow running, advancing every ${seconds} seconds`,
+    shortcutCopyLink: 'Copy link to this photo',
     shortcutList: 'This list',
     shortcutClose: 'Close the viewer',
   },