Waking the device with a book already open now pulls progress,
annotations and stats like reopening the book does, instead of
requiring a manual sync or book reopen. The pull is delayed 1s so
Wi-Fi can come back up after wake (same delay upstream kosync uses
on resume), debounced against rapid Suspend/Resume pairs (Android
fires them on focus changes), and the pending task is dropped on
widget close so it cannot run against a torn-down ReaderUI.
Closes#4924
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Huang Xin