Marketing site (bargevasat.ir) + admin-editable store links + subdomain split

- New standalone Next.js marketing site under site/ (static export, SEO):
  landing, download/install guide (Bazaar/Myket/iOS-PWA/web), FAQ (JSON-LD),
  privacy, terms, support, /admin link editor. fa RTL, sitemap/robots/manifest.
- Backend: SiteLinksService (JSON-file persisted) + GET /api/site/links (public)
  + POST /api/admin/site/links (X-Admin-Token). ADMIN_TOKEN + Site__DataDir via env.
- compose: hokm-site service (:1520) + hokm_data volume for links JSON.
- CI deploy job builds + deploys the site container.
- deploy/SUBDOMAIN_SPLIT.md: nginx blocks, cert reissue, DNS, ENV split.
- Exclude site/ from root tsc + web docker context.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

site/components/PageShell.tsx

@@ -0,0 +1,21 @@
+export function PageShell({
+  title,
+  subtitle,
+  children,
+}: {
+  title: string;
+  subtitle?: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <section className="mx-auto max-w-3xl px-4 py-14">
+      <h1 className="text-3xl font-black sm:text-4xl gold-text">{title}</h1>
+      {subtitle && <p className="mt-3 text-cream/65">{subtitle}</p>}
+      <div className="mt-8 space-y-5 leading-8 text-cream/80">{children}</div>
+    </section>
+  );
+}
+
+export function Prose({ children }: { children: React.ReactNode }) {
+  return <div className="glass rounded-2xl p-6 leading-8 text-cream/80">{children}</div>;
+}