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>

components/shared/copy-button.tsx

@@ -0,0 +1,24 @@
+"use client"
+
+import { useState } from "react"
+import { Copy, Check } from "lucide-react"
+
+export function CopyButton({ text, className }: { text: string; className?: string }) {
+  const [copied, setCopied] = useState(false)
+
+  async function handleCopy() {
+    await navigator.clipboard.writeText(text)
+    setCopied(true)
+    setTimeout(() => setCopied(false), 2000)
+  }
+
+  return (
+    <button
+      onClick={handleCopy}
+      title="Copy link"
+      className={className ?? "flex h-7 w-7 items-center justify-center rounded-md text-white/40 transition hover:bg-white/10 hover:text-white"}
+    >
+      {copied ? <Check className="h-3.5 w-3.5 text-emerald-400" /> : <Copy className="h-3.5 w-3.5" />}
+    </button>
+  )
+}