Auth Flow Generator Generate a complete authentication flow with Sign in with Apple, biometric authentication (Face ID/Touch ID), and secure Keychain storage. When This Skill Activates Use this skill when the user: - Asks to "add authentication" or "add login" - Mentions "Sign in with Apple" or "SIWA" - Wants "Face ID login" or "biometric auth" - Asks about "Keychain" or "secure storage" - Mentions "user session" or "auth token" Pre-Generation Checks 1. Project Context Detection - [ ] Check for existing auth implementations - [ ] Check for AuthenticationServices framework usage - [ ] Verify e…