Agent Skills: maintainable-react

Principles for writing, refactoring, and reviewing React code so it stays maintainable — resisting premature abstraction (the "demon component"), keeping data flow obvious, and putting state and effects in the right place. Use when writing or refactoring a React component or hook, deciding whether to extract or reuse one, reviewing React for maintainability, reaching for useEffect, choosing where state lives, or untangling prop drilling and over-abstraction.