The <ul> had bg-surface (white), causing unread rows to inherit white
instead of blending with the canvas background. Read rows already set
bg-canvas explicitly, so they looked fine. Unread rows were white.
Fix: set bg-canvas on the <ul> so all rows inherit the page background.
The redundant explicit bg-canvas on read rows is removed.
Unread items remain visually distinct via the left accent border + dot only.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>