Claude Claude Code configuration reference. Claude Code configuration reference. Resources CLAUDE.md : Project-specific instructionsCLAUDE.md : CLAUDE.md at /CLAUDE.mdSkills : Skill packagesheadless-browser : Browser automation with two efficiency tiers. Tier 1: headless-check.js for quick health checks, screenshots, error detection (JSON output). Tier 2: Playwright CLI (@playwright/cli via npx) for intera...verify-ui : Verify CSS/UI changes actually match what the user asked for. Uses deterministic computed style checks to avoid LLM confirmation bias. Use when: (1) After making CSS or layout changes and the user ask... Next CLAUDE.md