Plugin WorktreeCreate hooks now run when --worktree creates a worktree

What

--worktree starts Claude Code in a separate working copy of your project, called a worktree. Plugins can supply a hook for this. A hook is a small program that runs when a certain event happens, and the WorktreeCreate hook runs when a worktree is being created, replacing the default git behaviour.

Before this release, Claude Code did not register plugin worktree hooks before creating the worktree at startup, so a plugin's WorktreeCreate hook did not run. Startup now registers them first. Other changes in the same part of startup:

• If registering the plugin hooks fails, Claude Code logs a warning saying the plugin's WorktreeCreate hook will not run.
• Worktree setup now takes a pull request as a number plus a forge, meaning the hosting service the pull request lives on. Before, it took a bare number.
• Setup takes a new resumeAsIs option, connected to cloud attach.
• Setup takes a new final option that is on by default and controls one further setup step.
• The record Claude Code logs when a worktree is created gains the fields for_cloud_attach and resumed_existing.
• The root-privilege check is unchanged. Its message wording is also unchanged apart from the phrase "Configure a WorktreeCreate hook".

Why

If you use a plugin that creates worktrees its own way, its WorktreeCreate hook can now run when you start Claude Code with --worktree. This could matter, for example, for version control systems other than git. If the hook still does not run, check the log for the new warning.