feat: add confetti animation on thought submission and update dependencies

thoughts-frontend/app/layout.tsx

@@ -1,5 +1,4 @@
 import type { Metadata } from "next";
-import { Geist, Geist_Mono } from "next/font/google";
 import "./globals.css";
 import { AuthProvider } from "@/hooks/use-auth";
 import { Toaster } from "@/components/ui/sonner";