What probably matters to youSection of the release
What
Authoring a skill, command, plugin manifest or marketplace entry with a non-object metadata value produces a validation warning instead of silent loss.
Details
The warning names the type actually found and states that the value is dropped or ignored at load time.
Applies to skill and command frontmatter, plugin manifests, and marketplace plugin entries.
Evidence
'metadata' must be a mapping (key: value pairs); got
Strings lifted out of the shipped bundle, so the claim above can be checked against them.