Initial commit: TopSysOps site + admin panel

Multi-page public site (Next.js), Node/Express backend with Postgres,
and Vite admin/account app, restructured from a single-page layout
into dedicated service, promotions, cases, about, FAQ, and blog pages
for SEO.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013otXCiTZsxdZ4SJKZ9wUky

public-site/lib/serverApi.js

@@ -0,0 +1,26 @@
+// Используется только внутри Server Component'ов (во время SSR/сборки).
+// Обращается к бэкенду напрямую по внутреннему docker-адресу, минуя Caddy -
+// это работает только на сервере Next.js, у браузера такого адреса нет.
+const BASE = process.env.BACKEND_INTERNAL_URL || 'http://backend:4000';
+
+async function get(path, { revalidate = 60 } = {}) {
+  try {
+    const res = await fetch(`${BASE}/api${path}`, { next: { revalidate } });
+    if (!res.ok) return null;
+    return res.json();
+  } catch (err) {
+    console.error(`[serverApi] failed to fetch ${path}`, err.message);
+    return null;
+  }
+}
+
+export const serverApi = {
+  getServices: () => get('/services').then((v) => v || []),
+  getPromotions: () => get('/promotions').then((v) => v || []),
+  getReviews: () => get('/reviews').then((v) => v || []),
+  getCases: () => get('/cases').then((v) => v || []),
+  getFaqs: () => get('/faqs').then((v) => v || []),
+  getContact: () => get('/contact'),
+  getBlogPosts: () => get('/blog').then((v) => v || []),
+  getBlogPost: (slug) => get(`/blog/${slug}`, { revalidate: 60 }),
+};