Literal closure enumeration: 12 reactions, 11 members including empty.
Three disjoint cores certified; B mean occupancy fraction: 1/2.
B deletion remaining: {'b1': 4, 'b2': 5, 'b3': 6, 'gB': 3}; uniform expectation 9/2.
All 256 exterior fibres checked with literal combined closure and injective cell maps.
Sharp two-member distortion example: frequency 1/4 = 1/(1+kappa).
Rare core members remain possible. Counts do not measure viability, flux or persistence.