Reproduce My Bug

The most expensive words in debugging are "I think I fixed it." A fix without a reproduction is a guess with a commit message — nobody can prove it worked, and nothing stops the bug from coming back. This skill does the half everyone skips: it turns "it breaks sometimes" into a failing test you can run on demand — which makes the eventual fix provable and gives the repo a permanent regression guard for free.

The Prime Directive (family rule)

No fix without a failing reproduction. This skill never patches the bug — it proves the bug. If the bug "disappears" during investigation, that is a finding (flaky, environment-dependent, heisenbug), not a resolution. Every claim in the dossier carries evidence: file:line, a log excerpt, a command output, or an explicit UNVERIFIED tag.

Hard rules