Clicking the bottom progress slider left it focused, and the reader's
keydown guard treats INPUT focus as typing — so arrow keys stepped the
range input instead of turning pages. With step="any" each press moved
~1% of the book and key repeat crossed the whole book in seconds; the
debounced progress saves then persisted every wild landing (positions
scattered from page 5 to 285 to 100%, "progress no longer saves
correctly after page turns").
Two layers:
- reader.templ: all three progress sliders blur on pointerup, so a
mouse scrub no longer leaves focus behind.
- reader.ts handleKeydown: ArrowLeft/ArrowRight on a focused progress
slider preventDefault, blur, and fall through to the page-turn
handlers; every other key still belongs to the control, so a
keyboard user who Tabbed to the slider keeps arrows for it.
John O'Keefe
807899b137