release: v0.19.0

Release v0.19.0. See the `## [0.19.0] — 2026-09-29` section of
[CHANGELOG.md](https://github.com/ralksta/immich-folio/blob/dev/CHANGELOG.md)
for the full list.

Highlights: client proofing links (#683), custom content pages (#738),
asset picker search (#740), concurrent-edit detection (#742), env-locked
settings (#739), an accessibility baseline (#741), three security fixes
with advisories (#737, #755, #759), and a pre-release quality pass
(#780–#797).

---------

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>
Co-authored-by: Ralf <rohlenbo79@gmail.com>
Co-authored-by: Paul Thies <110185070+ImScheinox@users.noreply.github.com>
Co-authored-by: lancetm714 <108419425+lancetm714@users.noreply.github.com>
Co-authored-by: Lance Martin <lancetaylor95@gmail.com>

content/settings.yaml.example

@@ -111,6 +111,16 @@ footer:
   email: "hello@example.com"
   website: "https://example.com"
 
+# ── Client proofing ──────────────────────────────────────────────
+# Hearts on every photo, a selection bar and an export dialog. A subpage's own
+# `proofing:` in gallery.yaml overrides `enabled` in either direction.
+# "Send by email" addresses `email`, else footer.email, and is hidden when
+# neither is set.
+# proofing:
+#   enabled: true
+#   allowMailto: true
+#   email: "proofs@example.com"
+
 # ── Privacy policy ───────────────────────────────────────────────
 # The text lives in content/privacy.md, written in the admin panel under
 # Settings → Legal. /privacy is shown, and linked in the footer, while this is