update ui update and fix layout issue

src/app/api/dashboard/briefing/route.ts

@@ -1,12 +1,14 @@
 import type {NextRequest} from 'next/server';
-import {ok, parseQuery, simulate, wantsEmpty} from '@/lib/api/server';
-import {buildBriefing} from '@/lib/mock/briefing';
+import {ok, parseQuery, requireApiSession, simulate, wantsEmpty} from '@/shared/services/apiRoute';
+import {buildBriefing} from '@/features/dashboard/mock/briefing.mock';
 
 export const dynamic = 'force-dynamic';
 
 const EMPTY = {summary: '', alerts: [], tasks: []};
 
 export async function GET(req: NextRequest) {
+  const denied = await requireApiSession();
+  if (denied) return denied;
   const q = parseQuery(req);
   const simulated = await simulate(q);
   if (simulated) return simulated;