feat: add graceful error recovery with user-friendly error screens and retry options for improved user experience

app/error.tsx

@@ -0,0 +1,13 @@
+'use client'
+
+import ErrorDisplay from '@/components/ErrorDisplay'
+
+export default function GlobalError({ reset }: { error: Error; reset: () => void }) {
+  return (
+    <ErrorDisplay
+      title="Something went wrong"
+      message="An unexpected error occurred. Please try again or go back to the dashboard."
+      onRetry={reset}
+    />
+  )
+}