fix(05-04): sync defaultEmail into state after hydration

teressa-copeland-homes/src/app/portal/(protected)/documents/[docId]/_components/PreparePanel.tsx

@@ -1,5 +1,5 @@
 'use client';
-import { useState } from 'react';
+import { useState, useEffect } from 'react';
 import { useRouter } from 'next/navigation';
 import { TextFillForm } from './TextFillForm';
 
@@ -21,6 +21,10 @@ function isValidEmail(email: string): boolean {
 export function PreparePanel({ docId, defaultEmail, clientName, currentStatus }: PreparePanelProps) {
   const router = useRouter();
   const [recipients, setRecipients] = useState(defaultEmail ?? '');
+  // Sync if defaultEmail arrives after initial render (streaming / hydration timing)
+  useEffect(() => {
+    if (defaultEmail) setRecipients(defaultEmail);
+  }, [defaultEmail]);
   const [textFillData, setTextFillData] = useState<Record<string, string>>({});
   const [loading, setLoading] = useState(false);
   const [result, setResult] = useState<{ ok: boolean; message: string } | null>(null);