chore: import upstream snapshot with attribution

apps/sim/app/(landing)/changelog/utils.ts

@@ -0,0 +1,46 @@
+import type { ChangelogEntry, GitHubRelease } from '@/app/(landing)/changelog/types'
+
+/**
+ * Changelog helpers shared by the server page (initial page) and the client
+ * timeline (subsequent pages), so the GitHub-release → entry mapping is defined
+ * once and both surfaces stay in sync.
+ */
+
+/** How many releases to request per GitHub API page. */
+export const RELEASES_PER_PAGE = 10
+
+/** Builds the GitHub Releases endpoint for a given 1-based page. */
+export function releasesEndpoint(page: number): string {
+  return `https://api.github.com/repos/simstudioai/sim/releases?per_page=${RELEASES_PER_PAGE}&page=${page}`
+}
+
+/** Removes literal `&nbsp` artifacts from release bodies. */
+export function sanitizeContent(body: string): string {
+  return body.replace(/&nbsp/g, '')
+}
+
+/** Extracts unique `@handle` GitHub mentions from a release body. */
+export function extractMentions(body: string): string[] {
+  const matches = body.match(/@([A-Za-z0-9-]+)/g) ?? []
+  return Array.from(new Set(matches.map((mention) => mention.slice(1))))
+}
+
+/** Maps non-prerelease GitHub releases to normalized {@link ChangelogEntry} items. */
+export function mapReleases(releases: GitHubRelease[]): ChangelogEntry[] {
+  return releases.reduce<ChangelogEntry[]>((acc, release) => {
+    if (release.prerelease) {
+      return acc
+    }
+
+    const body = String(release.body ?? '')
+    acc.push({
+      tag: release.tag_name,
+      title: release.name || release.tag_name,
+      content: sanitizeContent(body),
+      date: release.published_at,
+      url: release.html_url,
+      contributors: extractMentions(body),
+    })
+    return acc
+  }, [])
+}