feat: add Redis-backed SSE updates

app/form/[id]/page.tsx

@@ -5,6 +5,7 @@ import { authOptions } from "@/app/api/auth/[...nextauth]/route";
 import { notFound } from "next/navigation";
 import LoginDialog from "@/components/login-dialog";
 import { canAccessForm, getSessionDiscordId } from "@/lib/auth";
+import { RealtimeRefresh } from "@/components/realtime-refresh";
 
 export const dynamic = "force-dynamic";
 
@@ -53,6 +54,7 @@ export default async function FormsSubmitPage(
 
   return (
     <>
+      <RealtimeRefresh topic="forms" formId={form.id} />
       <div className="max-w-2xl mx-auto p-4 md:p-6 space-y-6">
         <FormFillerClient 
           form={form}