fix(06): log audit events and set Viewed status in signing page server component

teressa-copeland-homes/src/app/sign/[token]/page.tsx

@@ -1,7 +1,9 @@
 import { verifySigningToken } from '@/lib/signing/token';
+import { logAuditEvent } from '@/lib/signing/audit';
 import { db } from '@/lib/db';
 import { signingTokens, documents } from '@/lib/db/schema';
 import { eq } from 'drizzle-orm';
+import { headers } from 'next/headers';
 import { SigningPageClientWrapper } from './_components/SigningPageClientWrapper';
 
 interface Props {
@@ -45,6 +47,16 @@ export default async function SignPage({ params }: Props) {
 
   if (!doc || !doc.preparedFilePath) return <ErrorPage type="invalid" />;
 
+  // Log audit events and update status to Viewed
+  const headersList = await headers();
+  const ip = headersList.get('x-forwarded-for')?.split(',')[0].trim() ?? 'unknown';
+  const ua = headersList.get('user-agent') ?? 'unknown';
+  await Promise.all([
+    logAuditEvent({ documentId: payload.documentId, eventType: 'link_opened', ipAddress: ip, userAgent: ua }),
+    logAuditEvent({ documentId: payload.documentId, eventType: 'document_viewed', ipAddress: ip, userAgent: ua }),
+    db.update(documents).set({ status: 'Viewed' }).where(eq(documents.id, payload.documentId)),
+  ]);
+
   return (
     <SigningPageClientWrapper
       token={token}