feat: implement Supabase database schema and core authentication flow with registration and login pages

components/error-toaster.tsx

@@ -0,0 +1,14 @@
+'use client'
+
+import { useEffect } from 'react'
+import { toast } from 'react-hot-toast'
+
+export function ErrorToaster({ message }: { message: string }) {
+  useEffect(() => {
+    if (message) {
+      toast.error(message)
+    }
+  }, [message])
+
+  return null
+}