[codex] Fix empty heatmap cells leaking splitArea background#21574

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susiwen8 wants to merge 3 commits into

codex/issue-21290-heatmap-empty

Commits on Apr 8, 2026

fix(heatmap): render empty cells consistently
susiwen8
committed

Commits on Apr 10, 2026

chore(heatmap): address review feedback
susiwen8
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Commits on May 2, 2026

Make heatmap empty cells reviewable in browser
susiwen8
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