code-review-fix task 10.2: wrap children with ErrorBoundary in layout.tsx

src/app/layout.tsx

@@ -1,6 +1,7 @@
 import type { Metadata } from "next";
 import "./globals.css";
 import { ThemeProvider } from "@/components/ThemeProvider";
+import { ErrorBoundary } from "@/components/ErrorBoundary";
 
 export const metadata: Metadata = {
   title: "Candle Annotator",
@@ -20,7 +21,9 @@ export default function RootLayout({
           defaultTheme="light"
           enableSystem={false}
         >
-          {children}
+          <ErrorBoundary>
+            {children}
+          </ErrorBoundary>
         </ThemeProvider>
       </body>
     </html>