The fleet Updates expander row inherited .updater-row's 3-column grid, so an
open row's detail body (CVEs, recovery, history) landed in a narrow right-hand
`auto` column with dead space to its left. Make .ov-row a block: the head stacks
on top and the detail body uses the full width.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>