[US-015] Home feed showing live stores #5
Description
User Story
As a buyer,
I want to see a feed of stores that are currently live,
So that I can immediately join a live sale.
Acceptance Criteria
- Feed shows stores with active live links, sorted by: relevance, recency, follower count
- Each card shows: store logo, store name, platform icon, "Live now" badge, viewer count (if available)
- Pull-to-refresh updates the feed
- Feed filtered to user's selected region by default
- Empty state with browse suggestion if no live stores