Rank grants
Hydrogen supports permanent and timed grants with audit history. Rank hierarchy limits what a user can grant, unless they hold the override permission.
hydrogen.command.grant— grant ranks below your own active rank.hydrogen.command.grant.override— bypass hierarchy and grantable restrictions (operators only by default).hydrogen.command.grants— view a player's grants.hydrogen.command.grants.remove— remove grants.
Durations support s, m, h, d, w, M (30-day months), y (365-day years), compound values such as 1h30m, and perm. Expiration and removal are tracked in grant history.