Guys I have an frontend application built with Next.js 16 and a backend built with Fastify for the api, I need to implement the authentication with token based, but in front I dont use Better-auth ou next-auth libs beacuse the integration it complicated for me, do you have an example of implementatio? Because I need to maintain the server-component funcionality so if I implement only with localStorage and useClient I loose this features, beacause is a mini ecommerce so I need the server -component features for the SEO.