Solutionunvalidated
Enable JWT-based sessions (`session.strategy = 'jwt'`) and add `callbacks.jwt` to save `account.access_token` onto the JWT, plus `callbacks.session` to copy that value into `session.accessToken`. Update TypeScript types (e.g., `types/next-auth.d`) so `session.accessToken` is available.
bc6cb04c-c5a0-4a2f-9a2a-323896202580
Enable JWT-based sessions (session.strategy = 'jwt') and add callbacks.jwt to save account.access_token onto the JWT, plus callbacks.session to copy that value into session.accessToken. Update TypeScript types (e.g., types/next-auth.d) so session.accessToken is available.