#69: audit-theme-design tags hue/CVD/ANSI-family noise on white,
vantablack, lumon, hackerman, matte-black, miasma as [identity] with a
legend — do not retune identity palettes into traffic lights.
#70: import-palettes keeps surface≠overlay when color0==color8, derives
light UI chips from base (ANSI-black trap), gentler light mantle; roles
are first-class. No bulk re-import of shipped theme JSON.
Verified: V0 (py_compile + synthetic import fixtures + audit report).