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/api/v1/properties/route.ts

@@ -0,0 +1,55 @@
+import { NextResponse } from "next/server"
+import { desc, eq } from "drizzle-orm"
+import { db } from "@/lib/db"
+import { properties } from "@/lib/db/schema"
+import { propertySchema } from "@/lib/validations"
+import { resolveApiRequest } from "@/lib/api-auth"
+import { emitWebhookEvent } from "@/lib/webhooks/emit"
+import { geocodeAddress } from "@/lib/geocoding"
+
+// Public REST API (v1) — Bearer API-key auth. All data is scoped by the
+// resolved account owner id (team-aware), never the raw session user.
+
+const unauthorized = () =>
+  NextResponse.json({ error: { code: 401, message: "Unauthorized" } }, { status: 401 })
+const forbidden = () =>
+  NextResponse.json({ error: { code: 403, message: "Forbidden" } }, { status: 403 })
+
+export async function GET(request: Request) {
+  const ctx = await resolveApiRequest(request)
+  if (!ctx) return unauthorized()
+
+  const data = await db.query.properties.findMany({
+    where: eq(properties.user_id, ctx.ownerId),
+    with: { units: { columns: { id: true, status: true } } },
+    orderBy: desc(properties.created_at),
+  })
+
+  return NextResponse.json({ data, count: data.length })
+}
+
+export async function POST(request: Request) {
+  const ctx = await resolveApiRequest(request)
+  if (!ctx) return unauthorized()
+  if (!ctx.canWrite) return forbidden()
+
+  const body = await request.json().catch(() => null)
+  const parsed = propertySchema.safeParse(body)
+  if (!parsed.success) {
+    return NextResponse.json(
+      { error: { code: 400, message: parsed.error.flatten() } },
+      { status: 400 }
+    )
+  }
+
+  const coords = await geocodeAddress(parsed.data)
+
+  const [data] = await db
+    .insert(properties)
+    .values({ ...parsed.data, user_id: ctx.ownerId, ...(coords ?? {}) })
+    .returning()
+
+  await emitWebhookEvent({ ownerId: ctx.ownerId, event: "property.created", data: { property: data } })
+
+  return NextResponse.json({ data }, { status: 201 })
+}