Constant BA_GATES_REJECTS 

pub const BA_GATES_REJECTS: [&str; 6];

Every guard string ssm_ba_gates_hopper_reject can return, in the order it tests them — and therefore the log’s slot table.

A list, not a bare set of literals at the call sites, because ba_gates_log gives each ONE its own once-flag and a reason with no slot would silently share another’s. every_reject_reason_has_its_own_log_slot drives the reject function over every guard and fails if a new string appears here without a slot.