For You shared the full active set with Recent/Explore and only re-ranked by a
blended score, so when a user's signals were thin it collapsed toward freshness
and looked identical to Recently-added.
Give it a structural identity:
- The scorer tags each item forYouTier: 2 = followed author, 1 = interest/
watch-topic match, 0 = other.
- The sorter leads with tier (your people first) regardless of raw score, then
ranks within tier; trusted-muted still sinks last.
- When NOTHING is tiered (logged-out / no follows / no interests) it falls back
to an author-interleaved discovery order (new interleaveByAuthor) so the feed
never reads as a chronological clone of Recently-added.
Tests: tests/for-you-tiering.test.mjs (tier beats score, tiers stack, muted
last, no-signal interleave, scorer tier tagging). Existing for-you-scorer suite
still green.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
