Epicenter Auth Upstream Grounding When changes depend on Better Auth OAuth provider behavior, bearer token verification, cookie handling, token rotation, plugin shape, JWKS, or generated API shape, ask DeepWiki a narrow question against before relying on memory. Use it to orient, then verify decisive details against local installed types, source, tests, or official docs before changing code. Known Better Auth source landmarks: Better Auth remains the auth server and session engine. Epicenter extends it through plugins and options; it does not replace Better Auth's server-side session model. U…