Compare agent skills before installing.

Creates or modifies infrastructure adapters in src/infrastructure/adapters/ and their corresponding port interfaces in src/domain/ports/. Use when adding a new I/O boundary (file system, HTTP, git, npm, OS), changing how an existing adapter translates errors, or wiring a new adapter into createDeps. Do NOT use for business orchestration — use `use-case` instead. Do NOT use for creating domain types — use `domain-model` instead.

When the user wants to write, rewrite, or improve marketing copy for any page — including homepage, landing pages, pricing pages, feature pages, about pages, or product pages. Also use when the user says "write copy for," "improve this copy," "rewrite this page," "marketing copy," "headline help," "CTA copy," "value proposition," "tagline," "subheadline," "hero section copy," "above the fold," "this copy is weak," "make this more compelling," or "help me describe my product." Use this whenever someone is working on website text that needs to persuade or convert. For email copy, see emails. For popup copy, see popups. For editing existing copy, see copy-editing. For the offer underneath the copy (bonuses, guarantees, value framing), see offers.