Tiles answer the row view's wasted space: the actions move under the meta
into vertical slack the thumbnail already reserves, which frees ~168px of
width, so the block survives in a narrow column and the list can go
multi-column. Rows stay single-column on purpose — reading down one edge
is why that view exists.
The column count now comes from a per-view minimum width, so every
multi-column view reflows on the mechanism the card grid already used.
peter
78f21eb46b