Audit issues

A tracker drifts: one cause gets filed ten times from ten sightings, issues ask for workarounds instead of the fix, work closes early with pieces still open, and old issues describe code or releases that have since moved on. An audit turns the tracker back into one issue per cause, each with its slices under it, and shows the owner the result before anything changes.

The script is python3 <folder of this SKILL.md>/scripts/audit_issues.py (below, audit). Its plan format is in references/plan-format.md. Every close it makes runs through the close-issues skill's script, so that skill must be installed beside this one.