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>

app/admin/components/useLatest.ts

@@ -0,0 +1,20 @@
+'use client';
+
+import { useEffect, useRef } from 'react';
+
+/**
+ * A ref that always holds the value of the latest render.
+ *
+ * For code that awaits a request and then has to know whether the editor moved
+ * on meanwhile: a save handler closes over the state it started with, so after
+ * the `await` it cannot tell "nothing changed" from "the operator kept typing".
+ * Comparing what was sent with `ref.current` can (every edit replaces the state
+ * value, so identity is enough).
+ */
+export function useLatest<T>(value: T) {
+  const ref = useRef(value);
+  useEffect(() => {
+    ref.current = value;
+  }, [value]);
+  return ref;
+}