ChannelsScreen returned ChannelsEmptyState before the action bar that owns
"New blank channel", so a fresh install could never create its first channel.
The empty state now offers both create paths (bare-create + ChannelBuilder),
reusing the exact createBlankChannel handler (number = max+1 → 1 on empty,
group "ErsatzTV", default ffmpeg profile).
Regression: App.test.tsx bare-creates from a [] lineup, asserts the POST
payload (number "1") + navigation to /app/edit-channel/{id}.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
timothyandClaude Fable 5
d3d50f60c4