refactor(all): migrate from React to Next.js

src/components/providers.tsx

@@ -0,0 +1,32 @@
+"use client";
+
+import * as React from "react";
+import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { TooltipProvider } from "@/components/ui/tooltip";
+import { Toaster } from "@/components/ui/toaster";
+import { Toaster as Sonner } from "@/components/ui/sonner";
+import { ThemeProvider } from "@/components/ThemeProvider";
+import { AuthProvider } from "@/contexts/AuthContext";
+
+export default function Providers({ children }: { children: React.ReactNode }) {
+  const [queryClient] = React.useState(() => new QueryClient());
+
+  return (
+    <ThemeProvider
+      attribute="class"
+      defaultTheme="system"
+      enableSystem
+      storageKey="egce-theme"
+    >
+      <QueryClientProvider client={queryClient}>
+        <AuthProvider>
+          <TooltipProvider>
+            <Toaster />
+            <Sonner />
+            {children}
+          </TooltipProvider>
+        </AuthProvider>
+      </QueryClientProvider>
+    </ThemeProvider>
+  );
+}