viewer/src/App.tsx

import React from "react";
import { Toaster } from "@/components/ui/toaster";
import { Toaster as Sonner } from "@/components/ui/sonner";
import { TooltipProvider } from "@/components/ui/tooltip";
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import UrdfView from "./pages/UrdfView";
import { ThemeProvider } from "./contexts/ThemeContext";
import { DragAndDropProvider } from "./contexts/DragAndDropContext";
import { UrdfProvider } from "./contexts/UrdfContext";

const queryClient = new QueryClient();

const App = () => {
  return (
    <ThemeProvider defaultTheme="system">
      <QueryClientProvider client={queryClient}>
        <TooltipProvider>
          <UrdfProvider>
            <Toaster />
            <Sonner />
            <DragAndDropProvider>
              <UrdfView />
            </DragAndDropProvider>
          </UrdfProvider>
        </TooltipProvider>
      </QueryClientProvider>
    </ThemeProvider>
  );
};

export default App;