Per fox. Previously the left column had three separate sections
(cameras / screens-thumbs / games) each with their own header. Now:
- one #tiles-thumbs container holds every camera, screen-share, and
game-share thumbnail
- single 'shares' h2 header (hidden when no thumbs)
- games stay below as a fixed persistent group (not popularity-ranked)
- TILE_KINDS.{screen,camera,gameshare} all set
thumbContainer:'tiles-thumbs'
- reorderTiles is now ONE sort over the unified list. Each tile carries
data-kind on the dataset so tileScore can pick the right TILE_KINDS
entry for owner-role lookup. A speaker's screen with 3 viewers ranks
above the same speaker's camera with 1 viewer; both rank below a
host's screen regardless of viewers.
- updateContainerVisibility collapsed to one anyThumb check
- mobile media query updates to grid-auto-fill the unified container
instead of just #cameras
Stale CSS (#cameras column rule, .screens-thumbs-h2) removed.