- Left swipe: short reveals Save (tap), full swipe marks read. Right swipe
still shares.
- Read stories leave the main feed and collapse into a "Read" shelf at the
bottom (collapsed by default), shown as slim one-line rows; swipe to mark
unread. An "all caught up" state shows when everything loaded is read.
- StoryRowView gains a compact presentation for the shelf.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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