Initial import: property management SaaS + security hardening + admin dashboard

Property Management Network — Next.js 16 (App Router), Better Auth,
Drizzle ORM over PostgreSQL, Stripe, OpenAI, Resend.

Includes:
- Security hardening: access-control/IDOR fixes, TLS-by-default DB layer,
  constant-time cron auth, strict security headers, atomic AI quota gating,
  HTML/email output encoding, demo-backdoor disabled in production.
- Superadmin dashboard at /admin (overview/MRR, server-paginated users with
  ban/impersonate/plan/delete, billing, platform activity + admin audit log,
  AI usage, system health) via the Better Auth admin plugin.
- Seed/migration utility scripts under scripts/.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

public/logo-light.svg

@@ -0,0 +1,22 @@
+<!-- Light logo: for use on DARK backgrounds (white wordmark). -->
+<svg width="340" height="40" viewBox="0 0 340 40" fill="none" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Property Management Network">
+  <defs>
+    <linearGradient id="pmn-light" x1="0" y1="0" x2="40" y2="40" gradientUnits="userSpaceOnUse">
+      <stop stop-color="#6366F1"/>
+      <stop offset="1" stop-color="#7C3AED"/>
+    </linearGradient>
+  </defs>
+  <rect width="40" height="40" rx="10" fill="url(#pmn-light)"/>
+  <g transform="translate(8 8)" fill="none" stroke="#FFFFFF" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
+    <path d="M6 22V4a2 2 0 0 1 2-2h8a2 2 0 0 1 2 2v18Z"/>
+    <path d="M6 12H4a2 2 0 0 0-2 2v6a2 2 0 0 0 2 2h2"/>
+    <path d="M18 9h2a2 2 0 0 1 2 2v9a2 2 0 0 1-2 2h-2"/>
+    <path d="M10 6h4"/>
+    <path d="M10 10h4"/>
+    <path d="M10 14h4"/>
+    <path d="M10 18h4"/>
+  </g>
+  <text x="52" y="27" font-family="Geist, 'Geist Sans', Inter, 'Segoe UI', system-ui, -apple-system, sans-serif" font-size="20" font-weight="700" letter-spacing="-0.3">
+    <tspan fill="#FFFFFF">Property Management </tspan><tspan fill="#818CF8">Network</tspan>
+  </text>
+</svg>