The login-to-feed pipeline had several issues causing lists (blocks,
subscriptions, hashtag preferences) to load too slowly or not reflect
in the feed:
1. All list loading was chained after profileStatePromise, adding
2.5-6s of unnecessary delay. Lists only need relay URLs, not profile
data. Now they chain off relaysReadyPromise instead, loading in
parallel with profile fetching.
2. The video grid refreshed immediately without waiting for any lists,
so the feed briefly displayed unfiltered content. Now the grid refresh
waits (up to 8s) for critical feed-filtering lists to settle.
3. Hashtag preferences weren't cached into the snapshot before the feed
rendered, so interests/disinterests were empty on first paint.
4. Subscription ensureLoaded had a 6s timeout that was too aggressive
for relay fetch (12s) + decryption (3-12s), causing silent failures.
Increased to 30s.
5. Subscription relay fetches for user and session actor ran sequentially.
Now they run in parallel via Promise.all.
https://claude.ai/code/session_01UKmTWb83AnQPRVQo3bKZqm