Skill Cleaner Use this when trimming skill prompt budget, finding duplicate skills, auditing enabled/disabled skill roots, or deciding which skills/plugins to remove. This is adapted for Joel's system from Peter Steinberger's skill. Joel System Contract - Canonical joelclaw skills live in . - Consumer skill dirs should usually symlink into canonical skills: - - - - External skill packs may live under , , or extension directories. Do not copy those into joelclaw unless Joel explicitly wants a curated fork. - Preserve project-local skills and repo policy even when they look redundant. They ofte…