Site: show downloads across every release [skip ci]

/release.json adds the sum of every release asset's downloads; the
update manifests are the apps' checks, not downloads.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

site/src/release.ts

@@ -1,10 +1,11 @@
 // Gitea redirects this to the newest release.
 export const RELEASES = "https://git.zacharyzhang.com/ZacharyZhang-NY/ElyOffice/releases/latest";
 
-/** The newest release's version, from the worker. */
-export async function latest(): Promise<string> {
+export type Release = { version: string; downloads: number };
+
+/** The newest release and all downloads, from the worker. */
+export async function latest(): Promise<Release> {
   const res = await fetch("/release.json");
   if (!res.ok) throw new Error(`release.json: ${res.status} ${await res.text()}`);
-  const { version } = (await res.json()) as { version: string };
-  return version;
+  return (await res.json()) as Release;
 }