zz-update

Run the zz-update skill, which executes a single script that refreshes the zz-stack marketplace and then updates every installed ZZ plugin. It prints each plugin's version before and after so you can see exactly what moved.

Refreshing the marketplace only updates the shelf metadata; plugins are resolved against that copy, so updating a plugin before refreshing re-reads the old shelf and reports it as up to date. The script runs both steps in the fixed correct order.

Yes. If any plugin version changed, the new skills and MCP servers are on disk but the current session still runs the old ones. The script explicitly tells you to restart Claude Code, which is the one step it cannot do itself.

The script detects renamed plugins using a built-in alias map (for example `zz` to `zz-core`), installs the replacement first, and only then removes the old plugin. A failure during this leaves the original installation untouched.

All plugins from one build are stamped with the same `<version>+<digest>`, so mixed versions after a successful update indicate one plugin resolved against something else. The script exits with an error and directs you to run /zz-access:doctor.

The script detects that nothing from the zz-stack marketplace is installed, says there is nothing to update, and prints the two commands to add the marketplace and install the zz-core baseline plugin.