Read the project AGENTS.md and applicable global guidance first. Fall back to CLAUDE.md if AGENTS.md is absent. Follow the global rules for optional tools, specialist agents and Git actions.

Web standards reference

Use this to pick the authoritative source for a question. For a standard, quote its anchor in references/source-anchors.md instead of fetching the page. Look up framework versions, deprecations and changed defaults when you use them (npm view <package> version, release notes, web fetch), because they change between anchor checks. Do not answer those from memory.

Question	Read
Component purity, hooks, Effects, list keys	references/official-docs.md §React
Server and Client Components, route files, environment variables	references/official-docs.md §Next.js
Strictness, narrowing, unknown	references/official-docs.md §TypeScript
Unit, component and end-to-end tests, screenshots	references/official-docs.md §Testing
Semantics and ARIA	references/official-docs.md §Accessibility, then $design-standards
A skill a playbook names is missing, or how to install it	references/companions.md
Starting a per-repo AGENTS.md	references/project-agents-md-template.md

Guardrails when applying any reference to this repo:

• Target repos vary: App Router, Pages Router, a Vite single-page app, a monorepo. Follow the repo's choice. Do not propose migrating the router, the data library or the state library unless the ticket is a migration.
• React and Next.js change defaults between majors, such as caching, rendering and data fetching. State the version the source targets and the repo's version from package.json.