Added 4 Demo Users, with Coast emails, Hierarchy, roles etc.

src/app/(dashboard)/chats/page.tsx

@@ -47,6 +47,7 @@ export default function ChatsPage() {
   const resizeStartRef = useRef({ x: 0, width: 0 })
 
   const [conversations, setConversations] = useState(conversationsData)
+  if (!user) return null
   const conversation = conversations.find((c) => c.id === activeChat)
   const otherParticipant = (conv: typeof conversationsData[0]) =>
     conv.participants.find((p) => p.id !== "user1") ?? conv.participants[0]