- README: close the Manual stream control code fence before the new section; snippet now builds rest-equilibrium inputs (runnable as shown). - Example: diagnostics use the known fluid-leaf masks (uncovered coarse minus slot-mode wall rows; fine ACTIVE minus solids) and raise on any non-finite population or rho <= 0 there instead of filtering by finiteness. No solver changes. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>