H1: guard that each axis value is a {token=weight} table before .items() —
a scalar (wall = 15000) or the array shape (wall = ["steel_frame"], a
plausible copy-paste from the sibling catalog's visual_bundle) now yields a
clean V-TT-06 error instead of a bare AttributeError. Mirrors the isinstance
guards already on zone_map and axes.
H2: exclude bool from the positive-integer weight check (weight = true is an
int subclass, previously slipped through as 1) — matches the guard
populate_color_register_bands already applies to its own values.
Two new ZoneBiasValidationTests cover both branches.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
jpmschweitzerandClaude Fable 5
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