Scaffold plugins with `claude plugin init` and ship them disabled-by-default

Releasebot·medium signal

Claude Code's June 2026 updates added `claude plugin init <name>` to scaffold a new plugin into .claude/skills plus autocomplete for /plugin subcommands and known-marketplace plugin names. Critically, a plugin can declare defaultEnabled: false in plugin.json (or its marketplace entry) so it installs without auto-activating — letting teams distribute capabilities that users opt into rather than having every install change behavior silently.