Track colliding KOReader statistics rows independently and require verified explicit targets before upload. Keep unresolved history pending with a visible recovery path.
Fixes#1457
Add lastReadAt timestamp to KOReader catalog book items and introduce reading streak and goal statistics widgets to the KOReader plugin dashboard layout.
Lifecycle handlers previously blocked on network work, so closing or suspending a book stalled the
device on slow or offline links. Persist snapshots first and drain them through a lifecycle outbox
with connected-state gates and phase-aware retries, so the UI stays responsive and pending work
survives restarts.
Move persistence behind a state manager with atomic flushes, and chunk sweeps, bulk downloads, and
annotation exchange through a background queue with checkpoints and transfer policies, so large
libraries make progress incrementally instead of restarting from scratch after an interruption.
Server side, add bulk manifest and page stats endpoints with batched queries and catalog query
filtering so the plugin can reconcile many books per round trip rather than one request per book.