Sharpen

Extract the principle behind a failure → update the skill to prevent the behavior, not just the specific instance.

When to Use

A field report, retro, or skill run surfaced an error, gap, or behavioral pattern worth preventing.
A skill needs simplification or bloat reduction without losing critical rules.

wk-sharpen rewrites SKILL.md files; wk-learn only writes to learnings/.
Direct skill edits without explicit user consent are out of scope.
Route to wk-learn (capture only, no skill edits): "make a learning", "capture this", "note this for later", "log what happened".
Route to wk-sharpen (apply edits to SKILL.md): "sharpen the skill", "apply this to the skill", "update the skill now", explicit /wk-sharpen.
Ambiguous phrasing ("learn from this and sharpen") defaults to wk-learn. Ask before promoting to wk-sharpen.