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)/settings/webhooks/page.tsx

@@ -0,0 +1,61 @@
+import { redirect } from "next/navigation"
+import Link from "next/link"
+import { desc, eq } from "drizzle-orm"
+import { db } from "@/lib/db"
+import { webhook_endpoints } from "@/lib/db/schema"
+import { getSessionUser } from "@/lib/session"
+import { getEffectiveOwnerId } from "@/lib/account"
+import { WebhookManager } from "@/components/dashboard/webhook-manager"
+import type { WebhookEndpointDTO } from "@/app/actions/webhooks"
+
+export const metadata = { title: "Webhooks" }
+
+export default async function WebhooksSettingsPage() {
+  const user = await getSessionUser()
+  if (!user) redirect("/login")
+
+  // Endpoints belong to the account owner (team-aware) so every portfolio event
+  // is delivered regardless of which member triggered it.
+  const ownerId = await getEffectiveOwnerId(user.id)
+
+  const rows = await db
+    .select()
+    .from(webhook_endpoints)
+    .where(eq(webhook_endpoints.user_id, ownerId))
+    .orderBy(desc(webhook_endpoints.created_at))
+
+  const endpoints: WebhookEndpointDTO[] = rows.map((row) => ({
+    id: row.id,
+    url: row.url,
+    description: row.description,
+    events: row.events,
+    secret: row.secret,
+    status: row.status,
+    source: row.source,
+    last_success_at: row.last_success_at,
+    last_error_at: row.last_error_at,
+    last_error: row.last_error,
+    failure_count: row.failure_count,
+    created_at: row.created_at,
+  }))
+
+  return (
+    <div className="max-w-2xl space-y-6">
+      <div>
+        <h2 className="text-lg font-semibold text-white">Webhooks</h2>
+        <p className="text-sm text-white/40">
+          Send real-time events to Zapier, Make, or your own server. Each delivery is signed with the
+          endpoint&apos;s secret so you can verify it&apos;s from us. See the{" "}
+          <Link
+            href="/api-docs#webhooks"
+            className="text-indigo-400 underline underline-offset-2 transition hover:text-indigo-300"
+          >
+            webhook documentation
+          </Link>{" "}
+          for the payload format and signature scheme.
+        </p>
+      </div>
+      <WebhookManager initialEndpoints={endpoints} />
+    </div>
+  )
+}