TypeScript & JavaScript Development Guidelines

Every rule in guidelines.txt, design.md, and patterns.md is a hard constraint. Apply them while writing code, not only during review.

Sources:

• Lint rules — Oxlint: https://oxc.rs/docs/guide/usage/linter/rules (covering eslint, typescript-eslint, unicorn, react, nextjs, jsx-a11y, jest, vitest, and more)
• Design guidelines — Google TypeScript Style Guide: https://google.github.io/styleguide/tsguide.html
• Systemic architecture — Systemic TypeScript by Vincent Alandev: https://valand.dev/systemic-ts
• Design patterns — refactoring.guru: https://refactoring.guru/design-patterns/typescript

Reading protocol

Load files in this order; stop when the task's scope is satisfied.