migration

[Jackson57279]

Summary by CodeRabbit

• New Features

  • Email/password + OAuth sign-in/sign-up with a global auth popup and social buttons.
  • Pro subscription: in-app checkout and Manage Subscription portal via Polar.sh.
  • Email verification: resend endpoint and verify page with user-facing flows.

• Improvements

  • Redesigned pricing page with Free/Pro cards and clear CTAs.
  • Session handling and rate-limited auth endpoints for more reliable sign-in.
  • UI updates: sign-in/sign-up forms, user menu, and subscription-aware components.