adapter

Use when creating, modifying, reviewing, or debugging components that extend `Adapter` or `AdapterMixin`, especially when class CSS, instance CSS, inheritance, or `.define(...)` behavior matters.

Guide users through planning, teaching, and implementing Adapter-based CSS-in-JS design systems. Use when creating or extending frontend UI architecture with design tokens, CSSStyleSheet/adoptedStyleSheets style modules, ES module CSS exports, base components, variants, or reusable UI patterns. For detailed Adapter runtime behavior, defer to the adapter-framework skill. Discuss decisions step by step, ask with concrete suggestions, align before implementation, and help users understand how to maintain and extend the UI later.

Use when developing this Adapter repository itself: runtime changes, docs workflow, dev CLI behavior, Python tooling, Deno validation, dependency updates, and maintaining concise repo development concepts as conventions evolve. Do not use for consumer-only Adapter usage questions unless repository development guidance is also needed.