You'll notice
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The plan-artifact command that published a plan as a shareable Artifact appears removed
What
The function that registered a "plan-artifact" skill — user-invocable, with the menu description "Publish a plan as a shareable Artifact" — has been replaced with a plain helper that only builds prompt text internally. No trace of the "plan-artifact" name or its menu entry remains in the bundle.
Why
This means the standalone plan-artifact command is no longer available to users to invoke directly, following earlier removals of other artifact-related skills like the spreadsheet and presentation deck ones.
Names in the bundleplan-artifact