Locate the root cause of a CONFIRMED failure via backward-then-forward semi-formal tracing. Trigger when the user provides a stack trace, failing assertion, error message, or specific wrong-value observation — "find the bug", "this test is failing", "track down this crash", "why is this test failing", "KeyError at line 89", "expected 70, got 100", "NoneType has no attribute X", "cart empties when second tab opens". SCOPE HARD RULE: requires a concrete failure (exception, failing test, or specific wrong output). Vague suspicion without evidence uses logic-review; behavior explanation uses logic-explain; refactor comparison uses logic-diff; codebase audit uses logic-health. Do NOT trigger for: vague "what's wrong" without a concrete symptom, style questions, or performance issues.
$npx -y skills add hyhmrright/logic-lens --skill logic-locateInstalls into the current project.
Run `npx skills use "https://github.com/hyhmrright/logic-lens" --skill "hyhmrright/logic-lens/logic-locate"` 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/hyhmrright/logic-lens" that are relevant to the current task. Run `npx skills add "https://github.com/hyhmrright/logic-lens"` and select the relevant skills, then follow their instructions.