Authentication Setup Use this skill when the real job is choosing and structuring product authentication for a real app , not dumping JWT snippets or pretending authentication, authorization, security hardening, and docs are all the same task. owns the setup layer for: - choosing hosted vs framework-native vs platform-native vs enterprise add-on vs self-hosted auth - deciding session/cookie vs token boundaries - selecting login methods: email/password, magic links, social OAuth, passkeys - defining what user/profile/org/membership data stays app-owned - planning SSO/SCIM, domain mapping, and…