release: v0.16.0

See CHANGELOG.md for the full v0.16.0 entry.

---------

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>

lib/journalNav.ts

@@ -0,0 +1,57 @@
+/**
+ * Sequential journal navigation — the "previous / next entry" pair at the foot
+ * of a journal entry, mirroring `albumNav.ts` (#483) for the journal (#591).
+ *
+ * `siblings` must already be filtered to what the current visitor may see —
+ * a draft, or a password-protected entry they have not unlocked, must never
+ * appear here even as a name-only link (GHSA-fvgv-97g3-wjr7 was exactly this
+ * class of leak for the index and page metadata).
+ *
+ * Neighbours are not wrapped around, for the same reason as albums: reaching
+ * the end of the journal should feel like an ending, not send the reader back
+ * to its start with no sign that they have been round.
+ */
+
+export interface JournalNavCandidate {
+  slug: string;
+  title: string;
+}
+
+export interface JournalNavLink {
+  href: string;
+  title: string;
+}
+
+export interface JournalNavPair {
+  prev?: JournalNavLink;
+  next?: JournalNavLink;
+}
+
+/**
+ * The neighbours of `currentSlug` within `siblings`, in that list's own order
+ * (publication order, newest first, same as `/journal` and `listJournalEntries()`).
+ *
+ * Returns an empty pair when the entry is not in the list, or when it is the
+ * only one — both cases mean there is nothing to offer, and the caller renders
+ * nothing.
+ */
+export function journalNeighbours(
+  siblings: readonly JournalNavCandidate[],
+  currentSlug: string,
+): JournalNavPair {
+  const index = siblings.findIndex((e) => e.slug === currentSlug);
+  if (index === -1 || siblings.length < 2) return {};
+
+  const link = (entry: JournalNavCandidate): JournalNavLink => ({
+    href: `/journal/${entry.slug}`,
+    title: entry.title,
+  });
+
+  const previous = index > 0 ? siblings[index - 1] : undefined;
+  const following = index < siblings.length - 1 ? siblings[index + 1] : undefined;
+
+  return {
+    ...(previous ? { prev: link(previous) } : {}),
+    ...(following ? { next: link(following) } : {}),
+  };
+}