Harden form auth and submission handling

app/admin/form/[id]/result/[submissionId]/client.tsx

@@ -1,9 +1,8 @@
 "use client";
 
-import React, { useState, useEffect, useRef } from "react";
+import React, { useState } from "react";
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
-import { Label } from "@/components/ui/label";
 import { 
   ContextMenu, 
   ContextMenuTrigger, 
@@ -14,7 +13,7 @@ import {
   ContextMenuGroup 
 } from "@/components/ui/context-menu";
 import { Copy, Check, Users, Calendar, Clock } from "lucide-react";
-import { ScrollArea, ScrollBar } from "@/components/ui/scroll-area";
+import { ScrollArea } from "@/components/ui/scroll-area";
 import Image from 'next/image';
 import { stripHtml } from "@/lib/utils";
 import { HtmlDisplay } from "@/components/html-display";