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/ai/ask/route.ts

@@ -12,6 +12,7 @@ import {
   expenses,
 } from "@/lib/db/schema"
 import { getSessionUser } from "@/lib/session"
+import { getEffectiveOwnerId } from "@/lib/account"
 import { openai } from "@/lib/ai/client"
 import { enforceAiQuota } from "@/lib/ai/usage"
 import { dataBlock } from "@/lib/ai/prompts"
@@ -23,8 +24,10 @@ export async function POST(request: Request) {
   const quota = await enforceAiQuota(user.id, "ai_ask")
   if (!quota.ok) return NextResponse.json({ error: quota.error }, { status: quota.status })
 
+  const ownerId = await getEffectiveOwnerId(user.id)
+
   const profile = await db.query.profiles.findFirst({
-    where: eq(profiles.id, user.id),
+    where: eq(profiles.id, ownerId),
     columns: { full_name: true },
   })
 
@@ -45,7 +48,7 @@ export async function POST(request: Request) {
         total_units: properties.total_units,
       })
       .from(properties)
-      .where(eq(properties.user_id, user.id)),
+      .where(eq(properties.user_id, ownerId)),
     db
       .select({
         id: units.id,
@@ -56,7 +59,7 @@ export async function POST(request: Request) {
         status: units.status,
       })
       .from(units)
-      .where(eq(units.user_id, user.id)),
+      .where(eq(units.user_id, ownerId)),
     db
       .select({
         id: tenants.id,
@@ -69,7 +72,7 @@ export async function POST(request: Request) {
         move_in_date: tenants.move_in_date,
       })
       .from(tenants)
-      .where(and(eq(tenants.user_id, user.id), eq(tenants.status, "active"))),
+      .where(and(eq(tenants.user_id, ownerId), eq(tenants.status, "active"))),
     db
       .select({
         amount: rent_payments.amount,
@@ -79,7 +82,7 @@ export async function POST(request: Request) {
         property_id: rent_payments.property_id,
       })
       .from(rent_payments)
-      .where(and(eq(rent_payments.user_id, user.id), gte(rent_payments.due_date, threeMonthsAgo))),
+      .where(and(eq(rent_payments.user_id, ownerId), gte(rent_payments.due_date, threeMonthsAgo))),
     db
       .select({
         id: maintenance_requests.id,
@@ -91,7 +94,7 @@ export async function POST(request: Request) {
         created_at: maintenance_requests.created_at,
       })
       .from(maintenance_requests)
-      .where(and(eq(maintenance_requests.user_id, user.id), inArray(maintenance_requests.status, ["open", "in_progress"]))),
+      .where(and(eq(maintenance_requests.user_id, ownerId), inArray(maintenance_requests.status, ["open", "in_progress"]))),
     db
       .select({
         id: leases.id,
@@ -102,7 +105,7 @@ export async function POST(request: Request) {
         status: leases.status,
       })
       .from(leases)
-      .where(and(eq(leases.user_id, user.id), eq(leases.status, "active"))),
+      .where(and(eq(leases.user_id, ownerId), eq(leases.status, "active"))),
     db
       .select({
         amount: expenses.amount,
@@ -112,7 +115,7 @@ export async function POST(request: Request) {
         property_id: expenses.property_id,
       })
       .from(expenses)
-      .where(and(eq(expenses.user_id, user.id), gte(expenses.expense_date, threeMonthsAgo))),
+      .where(and(eq(expenses.user_id, ownerId), gte(expenses.expense_date, threeMonthsAgo))),
   ])
 
   // Build summary stats
@@ -162,5 +165,5 @@ Answer the landlord's question in a helpful, concise, and professional manner. U
 
   const answer = completion.choices[0].message.content ?? ""
 
-  return NextResponse.json({ answer })
+  return NextResponse.json({ answer, usage: { used: quota.used, limit: quota.limit } })
 }