The chroma ladder landed with four P1s from review: reachContrast picked
its pole by background lightness instead of by what each pole can reach,
the generated neutral ink was solved on the window surface only, Fusion's
neutral family was still the green accent, and quiet sat below the text
floor while disabled reused the palette gray.
Pick the pole by achievable contrast, solve fallback and preview inks on
the harder of the window and button surfaces, re-author Fusion's neutral
trio in slate blue, and keep quiet on the shared text floor by muting its
saturation to 45% instead of blending it into the surface. Disabled is now
derived from the quiet ink, so it is structurally dimmer than every
enabled level on every theme.
Re-author all soft roles at a 4.60 target with a rounding margin, rebuild
the per-theme preview generator the rebase dropped, and add a Disabled row
to every treatment sheet.
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