After the storefront migration, no live routes mount under /api/v1/shop/. Remove all dead code that detected/handled shop API requests: the is_shop_api_request() method, the shop API dispatch branch in middleware, the RequestContext.SHOP enum member (renamed to STOREFRONT), legacy path prefixes in FrontendDetector, and all associated tests. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>