Operating rates: ['10000', '4', '100', '10000', '99', '2']; equilibrium: ['1', '1', '1', '1/100'].
Operating quartic: {'status': 'unstable_complex_pair', 'coefficients': ['10908', '185600', '1280000', '64000000'], 'H': '-5025252352000000', 'second_hurwitz': '2023244800'}.
25 original children certified for all positive column scalings; 4 singular.
Source root bracket [2,4]: H endpoints ['-2133097221521408', '2676722101092352'].
Stable control (T,L)=(2,1): H=626688.
Dilution completion: 121 transported children; feed=['100', '1', '1', '201/100'].
Numerical local mode: 2.99974676 + 15.6895257 i.
Local nonlinear/linear relative error: 4.92017e-06.
Unstable linearization is not a sustained oscillation or atom-resolved mechanism.