Structured 4-phase debugging methodology that prevents blind probing and guesswork. Forces root cause identification before any fix attempt. Use when encountering bugs, errors, unexpected behavior, test failures, or when something "just stopped working." Trigger words: debug, bug, error, broken, not working, fix this, something's wrong, investigate, root cause, why is this failing, trace the issue.
$npx -y skills add jkheadley/instar --skill systematic-debuggingInstalls into the current project.
Run `npx skills use "https://github.com/jkheadley/instar" --skill "jkheadley/instar/systematic-debugging"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/jkheadley/instar" that are relevant to the current task. Run `npx skills add "https://github.com/jkheadley/instar"` and select the relevant skills, then follow their instructions.