JOB138 PREFREEZE DEVELOPMENT RECORD The initial fitted deployment model matched all590development fields across all7compact channels. No model/weight selection or parameter tuning followed that result; seed138001 was declared beforehand. All3resampled fits have identical effective runtime coefficients/operators/thresholds, with different training-count metadata. Eight-turn tests on all590development sources stayed exact at eachturn for all3seeds. Independent audit caught a capacity robustness defect under deliberately corrupted birth-gate weights: a64cell source could index the unavailable65th slot. The failure is retained in audit-prefreeze-capacity-failure.json. The runtime now independently enforces64cell capacity and only creates a membrane when no membrane is present. These are disclosed grammar/structural safeguards. Initial JavaScript deep equality failed143of590fixtures because negating layer0 produced JavaScript-0 while NumPy integer output carried0. The complete failure report is retained. Emitted integer layer values now normalize zero. All590 fullfields, birth choices, repairs and diagnostics pass Python/JS exact parity. UI review found the fallback birth address could violate the nNN grammar when the default appended-slot name already existed. Both runtimes now select the next unused valid n01..n99 address. Independent renamed/gapped-name fixtures and the41UItests pass. Existing addresses remain unchanged. Before freeze the planned480hard scenes were improved by replacing60duplicate empty scenes with60explicit occupied-scaffold boundary scenes. There remain 20empty stress cases. The designed predicted clearances25/26/27 exercise the known26-unit spacing threshold; they are not unseen-rule discovery. This change preceded any final source generation and did not alter the model. Code readability cleanup removed a dead conditional and corrected a training comment: the membrane-drift labels explicitly use the known0.025teacher term, rather than claiming a trace capture. Module wording and REPRODUCE likewise identify structural constants/rule-derived supervision alongside fitted values. No executed numerical training behavior changed in this cleanup.