The double_page_spread checkbox in the reader settings panel was inert:
it had no Alpine binding, no apply logic, and no persistence. Default
was also inconsistent (false in settings-manager, absent from server
defaults).
- Add doublePageSpread state to the reader Alpine component, loaded
from saved settings (default true)
- Add applyDoublePageSpread() which sets the renderer's 'spread'
attribute to auto/none and persists the setting via saveSettings
- Apply the spread attribute during fixed-layout renderer init
- Bind the settings checkbox with x-model and @change
- Add double_page_spread: true to ReaderService server defaults so
new users get the same starting value the client expects
- Also improve the PDF pan/select toolbar button: distinct smart-
select vs pan icons, highlighted state while pan mode is active,
and dynamic tooltips/aria-labels explaining each mode
john-okeefe
f5d9578375