Consolidate audit-fixes branch: webhooks, integrations, and deploy hardening

Batch commit of the pending working tree on security/audit-fixes-2026-07.
Major areas:
- Outbound webhooks / Zapier: schema + signed delivery with retries, public
  v1 API (REST-hook subscribe/unsubscribe), settings UI, cron drain.
- Deploy hardening: email via SMTP2GO (Resend fully removed), verified DB TLS
  (DATABASE_SSL=require + DATABASE_CA), storage fails loud in production when
  Spaces is unconfigured instead of silently using ephemeral disk.
- Integrations & features (concurrent work): accounting (QuickBooks/Xero),
  e-signature (DocuSign/Dropbox Sign), PayPal, geocoding/maps, onboarding,
  expanded legal pages.
- DB migrations 0006–0009.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/(dashboard)/tenants/[tenantId]/page.tsx

@@ -3,6 +3,7 @@ import { and, eq, desc } from "drizzle-orm"
 import { db } from "@/lib/db"
 import { tenants as tenantsTable, rent_payments, maintenance_requests, leases as leasesTable } from "@/lib/db/schema"
 import { getSessionUser } from "@/lib/session"
+import { getEffectiveOwnerId } from "@/lib/account"
 import Link from "next/link"
 import { formatCurrency, formatDate } from "@/lib/utils"
 import { RentStatusBadge } from "@/components/dashboard/rent-status-badge"
@@ -10,15 +11,18 @@ import { MaintenanceStatusBadge, PriorityBadge } from "@/components/dashboard/ma
 import { Mail, Phone } from "lucide-react"
 import { CopyButton } from "@/components/shared/copy-button"
 import { SendReminderButton } from "@/components/shared/send-reminder-button"
+import { DeleteTenantButton } from "@/components/forms/delete-tenant-button"
 
 export default async function TenantDetailPage({ params }: { params: Promise<{ tenantId: string }> }) {
   const user = await getSessionUser()
   if (!user) redirect("/login")
 
+  const ownerId = await getEffectiveOwnerId(user.id)
+
   const { tenantId } = await params
 
   const tenant = await db.query.tenants.findFirst({
-    where: and(eq(tenantsTable.id, tenantId), eq(tenantsTable.user_id, user.id)),
+    where: and(eq(tenantsTable.id, tenantId), eq(tenantsTable.user_id, ownerId)),
     with: {
       unit: { columns: { unit_number: true, rent_amount: true, bedrooms: true, bathrooms: true } },
       property: { columns: { name: true, address_line1: true, city: true, state: true } },
@@ -31,19 +35,19 @@ export default async function TenantDetailPage({ params }: { params: Promise<{ t
     db
       .select()
       .from(rent_payments)
-      .where(and(eq(rent_payments.user_id, user.id), eq(rent_payments.tenant_id, tenantId)))
+      .where(and(eq(rent_payments.user_id, ownerId), eq(rent_payments.tenant_id, tenantId)))
       .orderBy(desc(rent_payments.due_date))
       .limit(6),
     db
       .select()
       .from(maintenance_requests)
-      .where(and(eq(maintenance_requests.user_id, user.id), eq(maintenance_requests.tenant_id, tenantId)))
+      .where(and(eq(maintenance_requests.user_id, ownerId), eq(maintenance_requests.tenant_id, tenantId)))
       .orderBy(desc(maintenance_requests.created_at))
       .limit(5),
     db
       .select()
       .from(leasesTable)
-      .where(and(eq(leasesTable.user_id, user.id), eq(leasesTable.tenant_id, tenantId)))
+      .where(and(eq(leasesTable.user_id, ownerId), eq(leasesTable.tenant_id, tenantId)))
       .orderBy(desc(leasesTable.created_at))
       .limit(1),
   ])
@@ -74,12 +78,18 @@ export default async function TenantDetailPage({ params }: { params: Promise<{ t
             </div>
           </div>
         </div>
-        <Link
-          href={`/tenants/${tenantId}/edit`}
-          className="rounded-lg border border-white/10 px-4 py-2 text-sm text-white/60 hover:border-white/20 hover:text-white transition"
-        >
-          Edit
-        </Link>
+        <div className="flex items-center gap-2">
+          <Link
+            href={`/tenants/${tenantId}/edit`}
+            className="rounded-lg border border-white/10 px-4 py-2 text-sm text-white/60 hover:border-white/20 hover:text-white transition"
+          >
+            Edit
+          </Link>
+          <DeleteTenantButton
+            tenantId={tenantId}
+            tenantName={`${tenant.first_name} ${tenant.last_name}`}
+          />
+        </div>
       </div>
 
       <div className="grid gap-6 lg:grid-cols-3">