refactor: enhance authentication and signup flow with new providers, update middleware matcher, and improve type safety for API responses

providers/AuthProvider.tsx

@@ -0,0 +1,13 @@
+"use client"
+
+import type { Session } from "next-auth"
+import { SessionProvider } from "next-auth/react"
+
+type Props = {
+  children: React.ReactNode
+  session?: Session
+}
+
+export const AuthProvider = ({ children, session }: Props) => {
+  return <SessionProvider session={session}>{children}</SessionProvider>
+}