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Quando invocado:

Test a feature locally using Muggle AI local MCP. Handles the full flow of listing/creating projects, use cases, and test cases, then generates or replays test scripts. Supports pulling test artifacts from cloud and rewriting URLs for local testing.

Habilidade do Claude Code para detectar padrões de testes instáveis que causam falhas intermitentes na CI.

Complete browser automation with Playwright. Auto-detects dev servers, writes clean test scripts to /tmp. Test pages, fill forms, take screenshots, check responsive design, validate UX, test login flows, check links, automate any browser task. Use when user wants to test websites, automate browser interactions, validate web functionality, or perform any browser-based testing.

Bootstrap a project's structure — convention folders, a CLAUDE.md contract (test command, run/demo command, blueprint format), and a starter spec with the "Done when" format. Run once per project.

Constant-time testing detects timing side channels in cryptographic code. Use when auditing crypto implementations for timing vulnerabilities.

· Improve skill collections or a named skill with iterative scoring, lint checks, behavioral tests, peer review. Triggers: 'skill refiner', 'improve skills', 'quality sweep', 'batch improve', 'skill loop', 'target 99%'.

Change phases in the GitHub Elements workflow by closing current thread and opening the next. Use for DEV→TEST, TEST→REVIEW, REVIEW→merge transitions, or demotions. Do not use for saving progress.

Upgrade React applications to latest versions, migrate from class components to hooks, and adopt concurrent features. Use when modernizing React codebases, migrating to React Hooks, or upgrading to latest React versions.

Bypass SiteGround caching (SG CachePress + LiteSpeed) for WordPress development. Adds cache-busting code to child themes for real-time development testing.

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes

Conduct WCAG 2.2 accessibility audits with automated testing, manual verification, and remediation guidance. Use when auditing websites for accessibility, fixing WCAG violations, or implementing accessible design patterns.