.text-input, .btn-outline, .btn-outline-ink were using bg-canvas which
now resolves to the tinted #f3f5f8 instead of white, making inputs and
Cancel/outlined buttons visually gritty on white paper cards. Switching
all three to bg-paper restores white surfaces inside cards in light mode.
Dark mode unaffected (canvas/paper both resolve correctly there).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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