Authentication Skill This skill covers Storefront Next's split-cookie authentication architecture with SLAS (Shopper Login and API Access Service). Overview Storefront Next uses a split-cookie architecture separating server and client auth concerns: - Server middleware ( ) — Manages SLAS tokens, writes cookies, handles token refresh - React Context ( ) — Provides public session data (non-sensitive fields) to components via Cookie Design | Cookie | Purpose | User Type | Expiry | HttpOnly | |--------|---------|-----------|--------|----------| | | Guest refresh token | Guest | 30 days | No | | |…