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>

app/api/search/route.ts

@@ -0,0 +1,65 @@
+import { NextRequest, NextResponse } from "next/server"
+import { and, eq, ilike, or } from "drizzle-orm"
+import { db } from "@/lib/db"
+import { tenants, properties, maintenance_requests } from "@/lib/db/schema"
+import { getSessionUser } from "@/lib/session"
+
+export async function GET(req: NextRequest) {
+  const user = await getSessionUser()
+  if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
+
+  const q = req.nextUrl.searchParams.get("q")?.trim() ?? ""
+  if (q.length < 2) return NextResponse.json({ tenants: [], properties: [], maintenance: [] })
+
+  const like = `%${q}%`
+
+  const [tenantRows, propertyRows, maintenanceRows] = await Promise.all([
+    db
+      .select({
+        id: tenants.id,
+        first_name: tenants.first_name,
+        last_name: tenants.last_name,
+        email: tenants.email,
+        status: tenants.status,
+      })
+      .from(tenants)
+      .where(
+        and(
+          eq(tenants.user_id, user.id),
+          or(ilike(tenants.first_name, like), ilike(tenants.last_name, like), ilike(tenants.email, like))
+        )
+      )
+      .limit(5),
+    db
+      .select({
+        id: properties.id,
+        name: properties.name,
+        address_line1: properties.address_line1,
+        city: properties.city,
+      })
+      .from(properties)
+      .where(
+        and(
+          eq(properties.user_id, user.id),
+          or(ilike(properties.name, like), ilike(properties.address_line1, like), ilike(properties.city, like))
+        )
+      )
+      .limit(5),
+    db
+      .select({
+        id: maintenance_requests.id,
+        title: maintenance_requests.title,
+        status: maintenance_requests.status,
+        priority: maintenance_requests.priority,
+      })
+      .from(maintenance_requests)
+      .where(and(eq(maintenance_requests.user_id, user.id), ilike(maintenance_requests.title, like)))
+      .limit(5),
+  ])
+
+  return NextResponse.json({
+    tenants: tenantRows,
+    properties: propertyRows,
+    maintenance: maintenanceRows,
+  })
+}