pub fn default_worktree(
stem: Option<&str>,
ticket_id: &str,
) -> Result<String, String>Expand description
Chooses the worktree branch for a ticket whose frontmatter does not name
one. stem is the ticket file’s stem; exec-sourced tickets have none and
always fall back to sloop/<ticket_id>. Err refuses the ticket with the
given reason: reindex holds it, sloop post rejects it.