Grid Spacing (Settings > Appearance) only changed the library grid. The
home, explore, detail and library-recommended rows were byte-identical
across Tight/Normal/Spacious because #2083 deliberately opted hub-row
cell packing out of the setting and hard-coded a 2px pad per card, and
the TV home rail never read the setting at all.
Treat a hub row as one row of the grid. MediaGridDelegate.cellWidth
packs row cells with the same gutter MediaGridGeometry uses, so a row
and the "see all" grid behind it render the same card at every setting.
HubSection renders max(4, gap) between cards - Tight keeps its historical
4px so nothing moves on update, Normal/Spacious render the grid's 6/12px
gutter - and feeds the same gap into its D-pad item extent and card memo
epoch. TvBrowseRail threads GridSpacing through metricsForHub,
maxActiveRailHeight and estimateHeight; non-full-card rails use the
setting scaled with the rest of the rail metrics, full-card rails keep
their own scale-derived gutter like full-bleed grids. The spotlight and
detail rail height reservations pass the setting too so reserved
heights track the narrower cards. Both surfaces watch the pref, so rows
re-lay out live.
close#2226
edde746
9a9b89082b