Backend: one source channel → N output rows, one per platform that
has user-visible groups. Each row carries a single platform, so the
frontend can color/icon an entire row without mixing sources.
- userAvailableChannel: add Platform field
- new explodeChannelByPlatform helper; drop now-redundant
collectGroupPlatforms
Frontend: use the row platform to drive theming and stop repeating
"ANTHROPIC" / "OPENAI" labels on every model chip.
- api/channels.ts: UserAvailableChannel.platform
- AvailableChannelsTable: name cell — PlatformBadge next to channel
name (replaces the two-line name/description block; description
moves to the badge's title tooltip); groups cell — each chip uses
platformBadgeLightClass + PlatformIcon; model list passes
show-platform=false + platform-hint to child chips
- SupportedModelChip: chip bg/border driven by platformBadgeClass,
leading PlatformIcon; platform-hint fallback when model.platform
missing
800802b8aa