Development record

itd-189 ruthless findings: a widening proposal whose admission sits behind an unreadable admissions tree is still reported outstanding with a remedy to write a disposition, contradicting the invariant the disposition side enforces (after the admitted check, break when the admissions tree is unreadable; add the mirror test); the issues README store contract still says the ledger root holds two sibling families while four roots are now declared; the held exclusion on the admission leg is untested; proposal is never resolved while occasioned_by is.