MUST USE when creating, updating, or managing AI skills and guidelines. Activates when: creating a new skill, editing existing skills, editing any SKILL.md file, editing any file in .ai/ or .claude/skills/ or .github/skills/, updating coding guidelines, modifying AI instructions, or when user mentions: skill, CLAUDE.md, AGENTS.md, guidelines, AI configuration. ALSO activates when about to write or edit a file matching .claude/skills/**/* or .github/skills/**/* — these are generated files that must not be edited directly.
Runs backend code quality checks in two tiers: Pint + related tests (every change), Pint + PHPStan + Rector + full suite (completion only). Activate after making changes to PHP files, or when user mentions: pint, phpstan, rector, code quality, static analysis, code style, run checks.
Test-driven bug fixing workflow. Activates when: fixing bugs, debugging issues, resolving defects, investigating errors, or when user mentions: bug, fix, broken, not working, error, issue, defect, regression.
Reviews recent code changes for improvements across functionality, code quality, security, and testing. Activates when: the user asks to review implementation, review changes, review code, audit code, check for improvements, or when user mentions: review, audit, improvements, code quality, code review.
Requests an independent code review from OpenAI Codex CLI, critically evaluates its findings, and applies warranted fixes. Activates when: the user says /codex-review, asks for a Codex review, or wants an external AI review of changes.
Evaluate the entire implementation and fix any issues that you find. If you find any issues, please fix them yourself. Only ask the user when you need a decision. Activates when: evaluating implementation, self-reviewing code, checking for issues, or when user mentions: evaluate, check implementation, self-review, verify implementation.
Implements a specification file phase-by-phase with progress tracking. Activates when: implementing a spec, building from a spec, starting a spec phase, or when user mentions: implement spec, spec file, implement phase, build spec, start phase.
Applies PR review feedback with critical evaluation. Activates when: applying review comments, addressing PR feedback, responding to code review, or when user mentions: review feedback, PR comments, apply feedback, address comments, reviewer feedback.