David Metcalfe
a33ac1e95e
Squashed from #68124, resolved against current main (inbox cards, marquee titles, actions cluster). Adds a Settings → Appearance 'Session list density' preference — compact (default, unchanged), comfortable (+deterministic metadata line), detailed (+initial-request preview) — with density-aware virtualizer estimates. Closes #68119 (cherry picked from commits 93bc19400a..568f78a8fc)