a7012b94c2
Document the provider-explicit auth/session and CSRF boundary for the SaaS tutorial. The recipe keeps cookies, sessions, CSRF policy, and rejection behavior in Axum/Tower/app code while hemx handlers continue to receive typed context/forms and return generated effects. req: laws/002 req: auth/001 req: auth/002 req: auth/003 req: auth/004 req: auth/005 req: failure/004 req: examples/001