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>

.env.production.example

@@ -0,0 +1,62 @@
+# ============================================================================
+# PROPERTY MANAGEMENT NETWORK — Production Environment
+# ============================================================================
+# Set these in Coolify (Environment Variables). Do NOT commit real values.
+#
+# Build-time vs runtime:
+#   NEXT_PUBLIC_* are inlined into the browser bundle during `next build`, so
+#   they MUST also be set as Build Variables in Coolify (not just runtime).
+# ============================================================================
+
+# === DATABASE (PostgreSQL) ===
+# Coolify Postgres (internal): postgres://USER:PASSWORD@<service-name>:5432/DB
+DATABASE_URL=postgres://user:password@db:5432/pmn
+
+# TLS policy (app + migrations). Default is encrypted + certificate-verified.
+#   disable    -> no TLS. Use for Coolify's internal/private-network Postgres
+#                 and the bundled docker-compose DB (plaintext over a private net).
+#   no-verify  -> encrypted but unverified (self-signed certs).
+#   require    -> encrypted + verified (managed DBs with a public CA).
+# DATABASE_CA  -> optional custom CA cert (PEM) when verifying.
+DATABASE_SSL=require
+# DATABASE_CA=
+
+# Run pending migrations automatically when the container starts.
+# Set to "false" for multi-replica deploys and run migrations as a one-off job.
+RUN_MIGRATIONS_ON_START=true
+
+# === BETTER AUTH ===
+# Generate: node -e "console.log(require('crypto').randomBytes(32).toString('hex'))"
+BETTER_AUTH_SECRET=replace-with-a-64-char-hex-secret
+# Public base URL of the app (no trailing slash).
+BETTER_AUTH_URL=https://propertymanagement.network
+
+# Google OAuth (optional). Redirect URI: <BETTER_AUTH_URL>/api/auth/callback/google
+GOOGLE_CLIENT_ID=
+GOOGLE_CLIENT_SECRET=
+
+# === STORAGE (local disk — mount a persistent volume on this path) ===
+STORAGE_DIR=/app/storage
+
+# === STRIPE ===
+STRIPE_SECRET_KEY=sk_live_xxx
+STRIPE_WEBHOOK_SECRET=whsec_xxx
+NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=pk_live_xxx
+STRIPE_PRO_MONTHLY_PRICE_ID=price_xxx
+STRIPE_LANDLORD_MONTHLY_PRICE_ID=price_xxx
+STRIPE_LIFETIME_PRICE_ID=price_xxx
+
+# === AI (OpenAI) ===
+OPENAI_API_KEY=sk-xxx
+
+# === EMAIL (Resend) ===
+RESEND_API_KEY=re_xxx
+RESEND_FROM_EMAIL=noreply@propertymanagement.network
+
+# === APP (NEXT_PUBLIC_* — also set as Build Variables) ===
+NEXT_PUBLIC_APP_URL=https://propertymanagement.network
+NEXT_PUBLIC_APP_NAME=Property Management Network
+
+# === CRON ===
+# Bearer token required by the /api/cron/* and /api/follow-ups/run endpoints.
+CRON_SECRET=replace-with-a-random-string