/plugin directory opens Discover, and marketplace commands treat the built-in directory separately

What

/plugin is the command for managing plugins, the add-ons that extend Claude Code. Plugins come from marketplaces, which are catalogs of plugins. This release changes how the built-in Anthropic plugin directory, anthropic-plugin-directory, is shown and handled.

• /plugin directory: now opens the Discover view (discover-plugins) limited to the anthropic-plugin-directory marketplace, with your search text passed in as searchQuery. It used to open a separate directory-search screen. That screen and its tab have been removed.
• Marketplace lookup: looking up a marketplace can now report that marketplace as not found under some condition.
• plugin marketplace list: the repository, ref, URL and path shown in the text output now go through new sanitizers. Plain values are shown as they are, and anything unusual is shortened to its beginning and end. Before, raw values were printed.
• plugin marketplace list --json: marketplaces whose source is pluginDirectory are left out, and the list is sorted by name. The anthropic-plugin-directory entry has its own handling.
• marketplace remove: removing a built-in plugin-directory result is no longer logged as a removed marketplace, and the error message it shows is shortened.

Why

Browsing the Anthropic plugin directory now happens in the same Discover screen as other plugin browsing. Escaping marketplace details protects your terminal from odd or hostile values in a marketplace's metadata. If you have scripts that read --json output, note that built-in directory entries no longer appear there.