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

backend/migrations/004_contact.sql

@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS contact_info (
+  id INT PRIMARY KEY DEFAULT 1,
+  address TEXT NOT NULL DEFAULT '',
+  phone TEXT NOT NULL DEFAULT '',
+  email TEXT NOT NULL DEFAULT '',
+  hours TEXT NOT NULL DEFAULT '',
+  map_embed TEXT NOT NULL DEFAULT '',
+  CHECK (id = 1)
+);