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)/ai-dashboard/page.tsx

@@ -10,6 +10,7 @@ import {
   maintenance_requests,
 } from "@/lib/db/schema"
 import { getSessionUser } from "@/lib/session"
+import { getEffectiveOwnerId } from "@/lib/account"
 import { AiDashboardClient } from "./ai-dashboard-client"
 
 export const metadata = { title: "AI Dashboard" }
@@ -18,6 +19,8 @@ export default async function AiDashboardPage() {
   const user = await getSessionUser()
   if (!user) redirect("/login")
 
+  const ownerId = await getEffectiveOwnerId(user.id)
+
   const now = new Date()
   const threeMonthsAgo = new Date(now)
   threeMonthsAgo.setMonth(threeMonthsAgo.getMonth() - 3)
@@ -26,19 +29,19 @@ export default async function AiDashboardPage() {
     db
       .select()
       .from(ai_recommendations)
-      .where(eq(ai_recommendations.user_id, user.id))
+      .where(eq(ai_recommendations.user_id, ownerId))
       .orderBy(desc(ai_recommendations.created_at))
       .limit(3),
     db
       .select()
       .from(ai_predictions)
-      .where(eq(ai_predictions.user_id, user.id))
+      .where(eq(ai_predictions.user_id, ownerId))
       .orderBy(desc(ai_predictions.created_at))
       .limit(3),
     db
       .select()
       .from(activity_log)
-      .where(and(eq(activity_log.user_id, user.id), eq(activity_log.type, "ai_action")))
+      .where(and(eq(activity_log.user_id, ownerId), eq(activity_log.type, "ai_action")))
       .orderBy(desc(activity_log.created_at))
       .limit(5),
     db
@@ -46,20 +49,20 @@ export default async function AiDashboardPage() {
       .from(rent_payments)
       .where(
         and(
-          eq(rent_payments.user_id, user.id),
+          eq(rent_payments.user_id, ownerId),
           gte(rent_payments.due_date, threeMonthsAgo.toISOString().slice(0, 10))
         )
       ),
     db
       .select({ status: unitsTable.status })
       .from(unitsTable)
-      .where(eq(unitsTable.user_id, user.id)),
+      .where(eq(unitsTable.user_id, ownerId)),
     db
       .select({ status: maintenance_requests.status, priority: maintenance_requests.priority })
       .from(maintenance_requests)
       .where(
         and(
-          eq(maintenance_requests.user_id, user.id),
+          eq(maintenance_requests.user_id, ownerId),
           inArray(maintenance_requests.status, ["open", "in_progress"])
         )
       ),
@@ -68,7 +71,7 @@ export default async function AiDashboardPage() {
   const allRecsData = await db
     .select({ status: ai_recommendations.status, action_data: ai_recommendations.action_data })
     .from(ai_recommendations)
-    .where(eq(ai_recommendations.user_id, user.id))
+    .where(eq(ai_recommendations.user_id, ownerId))
   const approvedRecs = allRecsData.filter((r) => r.status === "approved")
 
   let totalImpact = 0