bugfixlisted
Install: claude install-skill duthaho/skillhub
# bugfix — reproduce, root-cause, fix, prove
`/bugfix <symptom / error / failing thing>`
Answer one question: **why does this actually happen, and what's the minimal
fix that provably removes it?** The order is non-negotiable — reproduce
before diagnosing, diagnose before fixing, prove after fixing. A fix without
a confirmed root cause is a guess wearing a commit message.
## Step 0 — Check the log
Read `out/dev/bugfix-log.md` if it exists. A similar symptom fixed before is
the best diagnostic head start there is — past root causes cluster ("we've
had three timezone bugs in this module"). Mention any match. Also skim recent
`git log` — a bug that appeared recently usually shipped recently.
## Step 1 — Reproduce (before touching any code)
Turn the report into a **deterministic reproduction**: a command, a failing
test invocation, a curl, a click path, a `git bisect run` harness —
something that fails on demand and will pass when the bug is dead.
- **The gate is checkable:** a command you have **already run at least
once**, with the invocation and its output pasted. That output is the
baseline the fix is judged against — a repro described but never run
doesn't count.
- **Tighten the loop** — Step 2 re-runs it on every hypothesis, so its
speed is your debugging speed: faster, sharper signal, more deterministic
(pin time, seed RNG, isolate the filesystem).
- **Minimise** (skip when the repro is already one obvious line): cut
inputs, steps, config, and data one a