Agent Skills: nextjs-data-access-layer

Build secure, reusable data access patterns with DTOs, taint checks, and colocated authorization in Next.js. Use when centralizing database queries, transforming raw data to DTOs, adding server-only guards, or preventing sensitive data from reaching Client Components. (triggers: **/lib/data.ts, **/services/*.ts, **/dal/**, DAL, Data Access Layer, server-only, DTO)