You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
PluginsArea: what it touches
ImprovementsKind: in v2.1.242,
ImprovementsSection of the release
What
Install, uninstall, enable, disable, disable all, update and prune each now have their own failure message when the cause cannot be classified, replacing one generic line. Agent definitions with a name starting with a hyphen are now rejected.
Evidence
claude plugin disable --all failed with an unclassified error
Strings lifted out of the shipped bundle, so the claim above can be checked against them.