What probably matters to youSection of the release
What
synced joins the list of reserved plugin marketplace names, which is now checked against one table rather than a chain of separate rules. New messages cover a claude.ai plugin losing to a same-named local plugin, and an attempt to modify a synced plugin. Fetching plugins from claude.ai still requires the CLAUDE_CODE_SYNC_PLUGINS environment variable, so with it unset the synced list is empty and none of the new messages appear.
Details
Synced copies are deduplicated by name.
The reserved-name check itself runs regardless of the environment variable.
Evidence
plugins synced from your claude.ai account
Strings lifted out of the shipped bundle, so the claim above can be checked against them.