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/cron/daily/route.ts

@@ -7,7 +7,7 @@ import { formatCurrency, formatDate, daysUntil } from "@/lib/utils"
 import { isAuthorizedCron } from "@/lib/cron-auth"
 
 // Combined daily cron: rent reminders + overdue marking + lease expiry emails
-// Runs daily at 9am (see vercel.json)
+// Runs daily at 9am UTC (scheduled via DigitalOcean Functions — see DIGITALOCEAN.md)
 export async function GET(request: Request) {
   if (!isAuthorizedCron(request)) {
     return NextResponse.json({ error: "Unauthorized" }, { status: 401 })

app/api/cron/follow-ups/route.ts

@@ -0,0 +1,35 @@
+import { NextResponse } from "next/server"
+import { eq } from "drizzle-orm"
+import { db } from "@/lib/db"
+import { follow_up_rules } from "@/lib/db/schema"
+import { isAuthorizedCron } from "@/lib/cron-auth"
+import { runFollowUpsForUser } from "@/lib/follow-ups"
+
+// Automated follow-ups cron: runs every user's active follow-up rules.
+// Runs daily at 10:00 UTC (see functions/project.yml → follow-ups trigger).
+export async function GET(request: Request) {
+  if (!isAuthorizedCron(request)) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
+  }
+
+  // Distinct user ids that have at least one active follow-up rule.
+  const rows = await db
+    .selectDistinct({ user_id: follow_up_rules.user_id })
+    .from(follow_up_rules)
+    .where(eq(follow_up_rules.is_active, true))
+
+  let processed = 0
+  let total = 0
+
+  for (const { user_id } of rows) {
+    try {
+      const result = await runFollowUpsForUser(user_id)
+      total += result.sent
+      processed++
+    } catch (err) {
+      console.error(`follow-ups cron failed for user ${user_id}:`, err)
+    }
+  }
+
+  return NextResponse.json({ processed, sent: total })
+}

app/api/cron/late-fees/route.ts

@@ -4,7 +4,7 @@ import { db } from "@/lib/db"
 import { rent_payments, expenses } from "@/lib/db/schema"
 import { isAuthorizedCron } from "@/lib/cron-auth"
 
-// Vercel Cron: runs daily at 8am (see vercel.json)
+// Scheduled task: runs daily at 8am UTC (scheduled via DigitalOcean Functions — see DIGITALOCEAN.md)
 export async function GET(request: Request) {
   if (!isAuthorizedCron(request)) {
     return NextResponse.json({ error: "Unauthorized" }, { status: 401 })

app/api/cron/lease-expiry/route.ts

@@ -1,67 +0,0 @@
-import { NextResponse } from "next/server"
-import { and, eq, lte } from "drizzle-orm"
-import { db } from "@/lib/db"
-import { leases } from "@/lib/db/schema"
-import { sendEmail, leaseExpiryHtml } from "@/lib/email/send"
-import { formatDate, daysUntil } from "@/lib/utils"
-import { isAuthorizedCron } from "@/lib/cron-auth"
-
-export async function GET(request: Request) {
-  if (!isAuthorizedCron(request)) {
-    return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
-  }
-
-  const checkpoints = [
-    { days: 60, field: "reminder_60_sent" as const },
-    { days: 30, field: "reminder_30_sent" as const },
-    { days: 7,  field: "reminder_7_sent"  as const },
-  ]
-
-  let sent = 0
-
-  for (const { days, field } of checkpoints) {
-    const target = new Date()
-    target.setDate(target.getDate() + days)
-    const targetStr = target.toISOString().slice(0, 10)
-
-    const expiringLeases = await db.query.leases.findMany({
-      where: and(
-        eq(leases.status, "active"),
-        eq(leases[field], false),
-        lte(leases.lease_end, targetStr)
-      ),
-      with: {
-        tenant: { columns: { first_name: true, last_name: true, email: true } },
-        property: { columns: { name: true } },
-        unit: { columns: { unit_number: true } },
-      },
-    })
-
-    for (const lease of expiringLeases) {
-      if (!lease.tenant?.email) continue
-
-      const daysLeft = daysUntil(lease.lease_end)
-
-      await sendEmail({
-        to: lease.tenant.email,
-        subject: `Your lease expires in ${daysLeft} days — ${lease.property?.name}`,
-        html: leaseExpiryHtml({
-          tenantName: `${lease.tenant.first_name} ${lease.tenant.last_name}`,
-          propertyName: lease.property?.name ?? "",
-          unitNumber: lease.unit?.unit_number ?? "—",
-          leaseEnd: formatDate(lease.lease_end),
-          daysLeft,
-        }),
-      })
-
-      await db
-        .update(leases)
-        .set({ [field]: true })
-        .where(eq(leases.id, lease.id))
-
-      sent++
-    }
-  }
-
-  return NextResponse.json({ reminders_sent: sent })
-}

app/api/cron/rent-reminders/route.ts

@@ -1,79 +0,0 @@
-import { NextResponse } from "next/server"
-import { and, eq, lt } from "drizzle-orm"
-import { db } from "@/lib/db"
-import { rent_payments } from "@/lib/db/schema"
-import { sendEmail, rentDueReminderHtml, rentOverdueHtml } from "@/lib/email/send"
-import { formatCurrency, formatDate } from "@/lib/utils"
-import { isAuthorizedCron } from "@/lib/cron-auth"
-
-// Called by Vercel Cron — runs daily
-export async function GET(request: Request) {
-  if (!isAuthorizedCron(request)) {
-    return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
-  }
-
-  const today = new Date().toISOString().slice(0, 10)
-  const in3Days = new Date()
-  in3Days.setDate(in3Days.getDate() + 3)
-  const in3DaysStr = in3Days.toISOString().slice(0, 10)
-
-  // Payments due in 3 days → send reminder
-  const upcoming = await db.query.rent_payments.findMany({
-    where: and(eq(rent_payments.status, "pending"), eq(rent_payments.due_date, in3DaysStr)),
-    with: {
-      tenant: { columns: { first_name: true, last_name: true, email: true } },
-      property: { columns: { name: true } },
-      unit: { columns: { unit_number: true } },
-    },
-  })
-
-  for (const payment of upcoming) {
-    if (!payment.tenant?.email) continue
-    await sendEmail({
-      to: payment.tenant.email,
-      subject: `Rent Due in 3 Days — ${payment.property?.name}`,
-      html: rentDueReminderHtml({
-        tenantName: `${payment.tenant.first_name} ${payment.tenant.last_name}`,
-        propertyName: payment.property?.name ?? "",
-        unitNumber: payment.unit?.unit_number ?? "—",
-        amount: formatCurrency(payment.amount),
-        dueDate: formatDate(payment.due_date),
-      }),
-    })
-  }
-
-  // Payments past due date → mark overdue + send notice
-  const pastDue = await db.query.rent_payments.findMany({
-    where: and(eq(rent_payments.status, "pending"), lt(rent_payments.due_date, today)),
-    with: {
-      tenant: { columns: { first_name: true, last_name: true, email: true } },
-      property: { columns: { name: true } },
-      unit: { columns: { unit_number: true } },
-    },
-  })
-
-  for (const payment of pastDue) {
-    await db
-      .update(rent_payments)
-      .set({ status: "overdue" })
-      .where(eq(rent_payments.id, payment.id))
-
-    if (!payment.tenant?.email) continue
-    await sendEmail({
-      to: payment.tenant.email,
-      subject: `Rent Overdue — ${payment.property?.name}`,
-      html: rentOverdueHtml({
-        tenantName: `${payment.tenant.first_name} ${payment.tenant.last_name}`,
-        propertyName: payment.property?.name ?? "",
-        unitNumber: payment.unit?.unit_number ?? "—",
-        amount: formatCurrency(payment.amount),
-        dueDate: formatDate(payment.due_date),
-      }),
-    })
-  }
-
-  return NextResponse.json({
-    reminders_sent: upcoming.length,
-    marked_overdue: pastDue.length,
-  })
-}

app/api/cron/webhooks/route.ts

@@ -0,0 +1,16 @@
+import { NextResponse } from "next/server"
+import { isAuthorizedCron } from "@/lib/cron-auth"
+import { processDueDeliveries } from "@/lib/webhooks/deliver"
+
+// Webhook delivery retry drain. The emitter attempts an immediate delivery when
+// an event fires; this cron re-attempts anything still pending whose backoff
+// window has elapsed (and covers deliveries orphaned by a process restart).
+// Scheduled every 5 minutes via DigitalOcean Functions — see functions/project.yml.
+export async function GET(request: Request) {
+  if (!isAuthorizedCron(request)) {
+    return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
+  }
+
+  const { processed, delivered } = await processDueDeliveries(200)
+  return NextResponse.json({ processed, delivered })
+}