feat: add web app pages for org portal, thread viewer, and admin org management

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/app/api/threads/[id]/route.ts

@@ -0,0 +1,13 @@
+import { apiFetch, jsonResponse } from '../../../_lib/api';
+
+export const dynamic = 'force-dynamic';
+
+export async function GET(
+  _req: Request,
+  { params }: { params: Promise<{ id: string }> },
+): Promise<Response> {
+  const { id } = await params;
+  const res = await apiFetch(`/admin/threads/${id}`);
+  const body = await res.json();
+  return jsonResponse(body, res.status);
+}