Treat successful but empty live projections with existing live input as stale, reject them on the frontend, and keep the previous visible channel state during rebuild failures.
Add DOM coverage for the Settings analysis flow and backend serialization coverage for empty projection state.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Move variant grouping work out of Live TV rendering into the
catalog pipeline: a liveProjectionService builds the logical channel
projection (schema in liveProjectionSchema) whenever a source is
added, synced or modified (name change, new address), and the
projection is served through a /live route. ChannelList now consumes
the precomputed projection via a liveChannelProjection client
service, recalculating only when the catalog changes. Cover
projection building, incremental recompute and client consumption
with tests.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
