feat: migrate to open HuggingFace API and remove auth

Remove auth logic and switch to open API endpoint.

Co-authored-by: awa <212803252+aguitauwu@users.noreply.github.com>

app/page.tsx

@@ -1,15 +1,7 @@
 "use client";
 
-import { useAuth } from "@/lib/auth-context";
-import { TokenScreen } from "@/components/token-screen";
 import { ChatWindow } from "@/components/chat-window";
 
 export default function Home() {
-  const { isAuthenticated } = useAuth();
-
-  if (!isAuthenticated) {
-    return <TokenScreen />;
-  }
-
   return <ChatWindow />;
 }