feat: add demo mode feature flag using Redacted Script font

packages/web/src/main.tsx

@@ -2,9 +2,12 @@ import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
 import { createRouter, RouterProvider } from "@tanstack/react-router";
 import { StrictMode } from "react";
 import { createRoot } from "react-dom/client";
+import { applyDemoMode, getDemoMode } from "@/lib/demo";
 import { routeTree } from "./routeTree.gen";
 import "./index.css";
 
+applyDemoMode(getDemoMode());
+
 const queryClient = new QueryClient({
 	defaultOptions: {
 		queries: {