- Mark-read now immediately expands the READ shelf so the story is visible
- Orange signal stripe is fully removed (not dimmed) when isRead=true
- Pull-to-refresh clears seen snapshot → full reshuffle by signal score
- BackgroundRefreshManager fires a local notification for the top new
high-signal story after each cache refresh; Tech/AI/HomeLab stories
get their category in the notification title (≥65 signal threshold)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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