Referral page, bug fixes, seed data, persona tiers

- New /refer page with share/copy/stats
- Fixed modal z-index conflicts (z-50 → z-[60]) across forum, groups, souq, halal-monitor
- Seed route: forum categories, marketplace listings, private groups
- Mufti/Daie personas now available in Premium tier
- Fixed referral share link: falahos.my/mobile/auth?ref=CODE
- Fixed client-side persona access check for premium

src/app/nur/page.tsx

@@ -63,7 +63,7 @@ function NurChat() {
   /* Redirect if not logged in */
   useEffect(() => {
     if (!loading && !token) {
-      router.push("/login");
+      router.push("/auth");
     }
   }, [loading, token, router]);
 
@@ -74,7 +74,7 @@ function NurChat() {
     const loadData = async () => {
       try {
         const [historyRes, dailyRes] = await Promise.all([
-          fetch(`/api/chat/history/${user.id}`, {
+          fetch(`/mobile/api/chat/history/${user.id}`, {
             headers: { Authorization: `Bearer ${token}` },
           }),
           fetch("/mobile/api/chat/daily", {
@@ -406,7 +406,7 @@ function PersonaSelector({
   const canAccess = (personaId: string) => {
     if (personaId === "nurbuddy") return true;
     if (isPro) return true;
-    if (isPremium && ["alim", "hakim", "murabbi"].includes(personaId)) return true;
+    if (isPremium && ["alim", "hakim", "murabbi", "mufti", "daie"].includes(personaId)) return true;
     return false;
   };