Epic 3: Search & recommendations

[Tar-ive]

Reshaped from docs/user-stories.md. Legend: ✅ Live · 🟡 Partial · ⚪ Planned.

Personas: Giver

• 3.1 Personalized recommendations ✅ — As a Giver, I want recs that adapt to my engagement, so that it improves with use.
  • /feed/recommendations interaction-aware ranking + facet filters.
• 3.1b Richer taste signals ⚪ — embeddings, co-save graph, Pinterest/Spotify signals.
• 3.2 Find people ✅ — As a Giver, I want to search for friends, so that I can see their finds and gift them.
  • People search in /feed/search.
• 3.3 Search brands & items 🟡 — As a Giver, I want to search brands/products, so that I can look up specific gifts.
  • Brand/item search logic exists; being unified into /feed/search tabs.
• 3.4 Visual (photo) search 🟡 — As a Giver, I want to upload a photo and find similar gifts, so that I can shop by look.
  • Backend exists (Bedrock Titan multimodal + S3 Vectors); search-tab UI wiring pending.