skills

Review code that checks, transforms, maps, parses, formats, normalizes, sanitizes, encodes, decodes, truncates, or hardens values as they cross API, persistence, serialization, storage, protocol, or UI boundaries. Use to catch representation constraints leaking into domain rules, ambiguous helper names, unjustified lossy transformations, magic limits, defensive behavior outside the current scope, and validation at the wrong layer.

Write or refine durable engineering documentation such as API contracts, architecture docs, handoff docs, design notes, and reviewer-facing project documentation. Use when polishing project docs, documenting phase boundaries, or preventing conversation-specific/user-instruction wording from leaking into final artifacts.