forked from akai/readest
loveheaven
59d4f0aa33
setProgress was called multiple times per swipe burst, each call writing into readerStore.viewStates[key].progress. ~65 places in the reader subtree subscribed to useReaderStore() without a selector, so every setProgress fan-out re-rendered all of them -- even the 51 that didn't care about progress. On Android release builds this showed up as Layout = 9.8% and Function Call = 9.6% of main-thread self time in Chrome DevTools' Bottom-Up profile during a reading session. Fix: - New tiny store store/readerProgressStore.ts holds the per-book BookProgress map. setBookProgress only fires its own subscribers. - readerStore.setProgress now writes progress to the new store and only touches bookDataStore for the primary view (secondary parallel views shouldn't overwrite the shared config). - readerStore.getProgress is kept as a delegating facade so existing imperative call sites don't break. - Components / hooks that genuinely need to react to progress changes subscribe via the new useBookProgress(bookKey) hook. The handful of call sites that just want a one-shot read use getBookProgress(key) so they don't subscribe at all. - readerStore.clearViewState calls clearBookProgress so the map doesn't grow unbounded across book opens/closes. See store/readerProgressStore.ts header for the full rationale.