Changes
- Fix waking from a book into its folder or Home by applying pending reader transitions before dispatching input (#225). Manual sleep and Quick Resume after inactivity return to the book.
- Resume flashcard reviews at the same card, side and scroll position, preserving the pending queue and session counts. Save ratings on sleep and Home; reject incomplete progress writes and invalid or stale resume snapshots.
- Recover reusable font caches before abandoning an EPUB chapter under memory pressure. This mitigates a demonstrated failure path related to #223; the reported book still needs confirmation.
- Pass 664 native tests and six simulator sleep/wake scenarios covering EPUB, TXT and flashcards. Physical X3/X4 validation remains pending.
- No OTA or SD compatibility fix is claimed for #224 or #226. Partition tables and update paths are unchanged; X4 Pro distribution remains withdrawn.