Sign-in needs a Privy app id

One-time setup, done in the Privy dashboard, then the app boots normally.

1. 1
   Create the app

   At dashboard.privy.io, create an app and copy its App ID.
2. 2
   Enable the login methods

   Login methods → turn on Google, Apple, X, TikTok and Wallets. Anything not enabled there is dropped from the modal even if the code lists it.
3. 3
   Apple and TikTok: set your own credentials before the first user logs in

   Privy cannot migrate Apple or TikTok users from its default credentials to yours later. Apple needs a Services ID + key; TikTok needs a reviewed Login Kit app with Terms and Privacy URLs. Do this on the production app before launch, or use a separate dev app meanwhile.
4. 4
   Point the app at it

   Copy .env.example to .env.local, set NEXT_PUBLIC_PRIVY_APP_ID, restart pnpm dev.