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>

content/gallery.yaml.example

@@ -56,9 +56,13 @@ subpages:
     subtitle: "A collection of 2026 highlights in 35mm film." # Optional: Sub-text for headers
     password: "your-password" # Optional protection
     # hidden: true # EXPERIMENTAL: reachable by direct link, but not shown in navigation
-    # grid: # Optional per-page grid override (wins over settings.yaml)
+    # coverGrid: # Optional: the album covers on this page (nothing else)
     #   columns: 3 # how many album covers per row on this page
     #   gap: 8 # spacing between the covers, in px — omit to keep the theme's own
+    # grid: # Optional: the photos inside the albums (wins over settings.yaml)
+    #   columns: 4
+    #   gap: 6 # omit to keep the theme's own photo spacing
+    #   layout: "masonry"
     albums:
       - "album-uuid-5"
       - "album-uuid-6":
@@ -69,6 +73,32 @@ subpages:
           #   layout: "justified"
           #   columns: 2
           # coverPosition: "50% 25%" # EXPERIMENTAL: focal point for the cover crop ("top", "center bottom", "50% 25%")
+          #
+          # download: true
+          #   Offer the original file from the lightbox for this album.
+          #   Off everywhere by default, and opt-in per album on purpose: a
+          #   public portfolio should not start handing out full-resolution
+          #   originals because one client gallery needed to.
+          #   The download route checks the allowlist, this switch, the
+          #   album's password and that the asset really belongs to the
+          #   album, so an edited URL cannot reach anything else.
+          #
+          # location: city
+          #   How precisely this album's photographs may be placed — on the
+          #   map, and in the info panel of the viewer, which names the city
+          #   and country of each photo.
+          #     exact    (default) the mean of the photographs' own coordinates
+          #     city     rounded to 0.05° — roughly 5 km, city still named
+          #     country  rounded to 1° — roughly 100 km, only the country named
+          #     hidden   no marker on the map, and no place in the info panel
+          #   Worth setting for an album shot in one place — a garden, a
+          #   studio, a client's home, a fragile site — where the mean of the
+          #   coordinates is that place, and the marker stands on the property.
+          #   May also be set once on a subpage, where it applies to every
+          #   album on it unless the album says otherwise.
+          #   Where one marker merges several albums, the most cautious of
+          #   them governs the whole marker. A photograph that is in several
+          #   albums likewise follows the most cautious of them.
 
   # ── Subpage with Sections ────────────────────────────────────────
   # Use sections to group albums by location, theme, or any other logic.

content/settings.yaml.example

@@ -19,6 +19,9 @@ lang: "en"
 #   titleTemplate: "%s | My Portfolio" # Template for subpages (%s is replaced with subpage/album title)
 #   noIndex: false # Set to true to hide from search engines
 #   noFollow: false # Set to true to prevent search engines from following links
+#   # Licence your photographs are published under, emitted as structured
+#   # data on album pages. A URL or a short identifier.
+#   license: "https://creativecommons.org/licenses/by-nc-nd/4.0/"
 
 # ── Site password (optional) ─────────────────────────────────────
 # Puts the WHOLE public site behind one password — useful while a portfolio
@@ -77,6 +80,14 @@ theme:
   # heroStyle: "split" # split, fullbleed, minimal, stacked, typographic, mosaic, cover (EXPERIMENTAL)
   #   Note: "mosaic" needs at least 3 hero images in gallery.yaml (optimal: 6)
 
+# ── Site URL ─────────────────────────────────────────────────────
+# The address this portfolio is reachable at, e.g. https://folio.example
+# Needed for sitemap.xml, the feed and structured data: those are built
+# without a request, so the host cannot be derived from one. Left empty,
+# the sitemap stays empty rather than guessing a wrong address.
+# The SITE_URL environment variable is used when this is not set.
+# url: "https://folio.example"
+
 # ── Grid configuration ───────────────────────────────────────────
 grid:
   columns: 3