What
Of the three artifact skills, only the document one remains; the spreadsheet ("Publish a spreadsheet Artifact") and presentation deck ("Publish a presentation deck Artifact") skills are gone, taking their very large instruction bodies and HTML templates (the grid and formula engine, the slide studio and present mode) out of the build. That is a substantial size cut.
Details
- Neither skill was reachable in either build: all three share a check whose first half is hardcoded to false, so the whole artifact-skill family is off in v2.1.238 and v2.1.239 alike.
- The whiteboard skill lives in a separate registry and ships unchanged.
Evidence
menuDescription: "Publish a presentation deck Artifact"
Strings lifted out of the shipped bundle, so the claim above can be checked against them.