Agent Skills: sfnext-scapi-management

Add, remove, and list typed SCAPI clients in a Storefront Next project using `b2c sfnext scapi` commands, and browse API schemas to discover endpoints before writing loaders. Use this skill whenever the user says 'sfnext scapi', 'add an API to my storefront next project', 'what SCAPI clients does my sfnext project have', 'remove an API client', 'list available APIs for sfnext', 'browse schema before writing a loader', or asks how to integrate a specific SCAPI (shopper-baskets, shopper-search, etc.) into their Storefront Next project as a typed client. Also use when they want to check what parameters an endpoint accepts before coding. NOT for making actual SCAPI calls from loaders — see sfnext-data-fetching. NOT for standalone schema browsing outside a Storefront Next project — see b2c-cli:b2c-scapi-schemas.