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/clientApi.js

@@ -0,0 +1,26 @@
+// Используется в клиентских компонентах ('use client'). Идёт через относительный
+// /api - в браузере это резолвится через Caddy, который проксирует на бэкенд.
+async function request(path, options = {}) {
+  const res = await fetch(`/api${path}`, {
+    credentials: 'same-origin',
+    headers: { 'Content-Type': 'application/json' },
+    ...options,
+  });
+  if (!res.ok) {
+    let message = 'Request failed';
+    try {
+      const data = await res.json();
+      message = data.error || message;
+    } catch (e) {
+      // no JSON body
+    }
+    throw new Error(message);
+  }
+  if (res.status === 204) return null;
+  return res.json();
+}
+
+export const clientApi = {
+  submitReview: (data) => request('/reviews', { method: 'POST', body: JSON.stringify(data) }),
+  trackVisit: () => request('/stats/visit', { method: 'POST' }).catch(() => {}),
+};