Key events do not cross document boundaries, so shortcuts bound on the window
never fired while the book had focus and the browser default won instead —
ctrl+B opened bookmarks rather than the chapter sidebar. Replay them on the
window, cancelling the original only if a handler claimed it so ctrl+C still
copies.
Typography was in the stylesheet foliate prepends, which the book overrides;
moved to the appended one. The window keydown handler was never bound.
Also: wider reading area, page on a card, arrows moved onto it, spread gutter,
and the sidebar stays open on chapter clicks.
Drops epub.js's 1600-location pre-pass and its localStorage cache: foliate
hands back a CFI and an overall fraction on every relocate, so first open no
longer freezes.
Also fixes resuming (pre-resolves the stored CFI, falling back to the stored
percentage rather than silently resetting to page one), progress saving
(missing Content-Type, and no flush on the way out), and arrow keys inside
the book iframe.
patrick