pub const PREFIX: &str = "gh2|";Expand description
What every token this plugin gives starts with, so a reader can tell it from another plugin’s.
gh2 since the relationship count and the repository joined the token: a gh1 token,
which lacked both, is not one this plugin orders or ever gives, so a copy that recorded one
reads its task again once rather than trusting a version that could not see an edge, a
project membership or a transfer move.