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thePR0M3TH3ANandClaude Opus 4.8
512b6c3f6a
The For You feed's watch-history suppression and tag-affinity previously
loaded only when the For You / History view was first opened
(feedCoordinator loadLatest({allowStale:true})), so on a cold login the
feed first rendered without suppression and then re-ran ~1-3s later on the
watch-history "fingerprint" event. Watch history was the one feed-driving
list not eagerly warmed in the background on login.
It was deliberately deferred because a cold load used to be ~150+
serialized nip-07 decrypts that starved the single-threaded signer during
the fragile post-login handshake. That cost has since been bounded
(format-routing + newest-first chunk cap + deferred backfill), so the
authSessionCoordinator.js comment's condition for re-enabling an eager
preload is now met.
Kick a fire-and-forget watch-history preload AFTER the blocks/subscriptions/
hashtags lists finish decrypting (never concurrently — same reasoning as the
DM deferral). loadLatest({allowStale:true}) returns immediately and runs the
chunk-capped refresh in the background, so the For You feed's suppression is
warm by the time the user reaches it instead of waiting on the tab.
Extracted as schedulePostLoginWatchHistoryPreload() so the contract is
unit-tested in isolation (correct pubkey + allowStale, pubkey guard,
fire-and-forget / non-blocking, swallows a failed refresh). Build + full
unit suite green; mutation-verified.
Co-Authored-By: Claude Opus 4.8 <[email protected]>