
Use when setting up or configuring code quality tools (formatters, linters, type checkers, dependency scanners) for a repository. Also use when adding visual accessibility automation or security baseline scanning. Do not use for general coding or when tools are already configured.
Use when writing tests, designing test coverage, handling defect fixes, performing root-cause analysis, setting up CI verification, or configuring commit-time hooks. Also use when creating test matrices or choosing between unit/integration/E2E tests. Do not use for general development or linting setup.
Use when designing or reviewing a user-facing GUI and the goal is to reduce first-use cognitive load, clarify the primary path, improve discoverability and feedback, prevent errors, ensure accessibility, and ground decisions in established HCI and usability theory.