One git worktree as reported by git worktree list --porcelain.
git worktree list --porcelain
See ClaudeWrapper.Worktrees for how these are produced.
ClaudeWrapper.Worktrees
@type t() :: %ClaudeWrapper.Worktrees.Worktree{ branch: String.t() | nil, head: String.t() | nil, is_bare?: boolean(), is_detached?: boolean(), is_locked?: boolean(), is_main?: boolean(), is_prunable?: boolean(), lock_reason: String.t() | nil, path: String.t(), prune_reason: String.t() | nil }