Function delete_worktree 

pub fn delete_worktree(
    target: Option<&str>,
    keep_branch: bool,
    delete_remote: bool,
    force: bool,
    allow_busy: bool,
    lookup_mode: Option<&str>,
) -> Result<()>

Delete a worktree by branch name, worktree directory name, or path.

Parameters

• force — historical git worktree remove --force semantic. Forwarded to git::remove_worktree_safe; controls whether git itself will remove a worktree with uncommitted changes. Defaults to true at the CLI.
• allow_busy — bypass the gw-level busy-detection gate (lockfile + process cwd scan). Wired to the explicit --force CLI flag on the delete subcommand so users can override “worktree is in use” refusals.

These two flags are intentionally separate: the CLI --force is an affirmative user choice to bypass the busy check, whereas the git-force behaviour is a long-standing default that users rarely flip off.