This change refactors the Better-Auth plugin and Autumn client libraries to use camelCase for all input parameters by introducing a camelCase flag, updating middleware and endpoint configurations, and converting calls in both the backend plugin and React client. It affects every consumer of the plugin—Next.js examples, middleware, API routes, and client methods—so existing snake_case integrations will need to be updated and tested against the new request/response shapes. Because of its broad scope, there’s a high risk of subtle bugs in the conversion logic, breaking backward compatibility, and the sheer number of file changes makes thorough review and testing challenging.