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/inspections/[id]/route.ts

@@ -3,14 +3,17 @@ import { and, eq } from "drizzle-orm"
 import { db } from "@/lib/db"
 import { inspections } from "@/lib/db/schema"
 import { getSessionUser } from "@/lib/session"
+import { getEffectiveOwnerId, getAccountContext } from "@/lib/account"
 
 export async function GET(_: Request, { params }: { params: Promise<{ id: string }> }) {
   const user = await getSessionUser()
   if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
 
+  const ownerId = await getEffectiveOwnerId(user.id)
+
   const { id } = await params
   const data = await db.query.inspections.findFirst({
-    where: and(eq(inspections.id, id), eq(inspections.user_id, user.id)),
+    where: and(eq(inspections.id, id), eq(inspections.user_id, ownerId)),
     with: {
       property: { columns: { name: true } },
       unit: { columns: { unit_number: true } },
@@ -25,11 +28,20 @@ export async function PATCH(request: Request, { params }: { params: Promise<{ id
   const user = await getSessionUser()
   if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
 
+  const ctx = await getAccountContext(user.id)
+  const ownerId = ctx.ownerId
+  if (!ctx.canWrite) return NextResponse.json({ error: "Forbidden" }, { status: 403 })
+
   const { id } = await params
   const body = await request.json()
 
   const allowed: Partial<typeof inspections.$inferInsert> = {}
-  if (body.status !== undefined) allowed.status = body.status
+  if (body.status !== undefined) {
+    if (body.status !== "draft" && body.status !== "complete") {
+      return NextResponse.json({ error: "Invalid status" }, { status: 400 })
+    }
+    allowed.status = body.status
+  }
   if (body.notes !== undefined) allowed.notes = body.notes
   if (body.items !== undefined) allowed.items = body.items
   if (body.date !== undefined) allowed.date = body.date
@@ -38,7 +50,7 @@ export async function PATCH(request: Request, { params }: { params: Promise<{ id
     const [data] = await db
       .update(inspections)
       .set(allowed)
-      .where(and(eq(inspections.id, id), eq(inspections.user_id, user.id)))
+      .where(and(eq(inspections.id, id), eq(inspections.user_id, ownerId)))
       .returning()
 
     return NextResponse.json(data)
@@ -51,9 +63,13 @@ export async function DELETE(_: Request, { params }: { params: Promise<{ id: str
   const user = await getSessionUser()
   if (!user) return NextResponse.json({ error: "Unauthorized" }, { status: 401 })
 
+  const ctx = await getAccountContext(user.id)
+  const ownerId = ctx.ownerId
+  if (!ctx.canWrite) return NextResponse.json({ error: "Forbidden" }, { status: 403 })
+
   const { id } = await params
   try {
-    await db.delete(inspections).where(and(eq(inspections.id, id), eq(inspections.user_id, user.id)))
+    await db.delete(inspections).where(and(eq(inspections.id, id), eq(inspections.user_id, ownerId)))
     return NextResponse.json({ success: true })
   } catch (e) {
     return NextResponse.json({ error: (e as Error).message }, { status: 500 })