publishWidgetSnapshot() only ever ran from a user action, so an event created
on the web or on Android did not reach the widgets until the app was opened
again. A BGAppRefreshTask now republishes without the foreground.
The two keys this needs are arrays, which Xcode does not expose as
INFOPLIST_KEY_ build settings — verified by building and inspecting the
result. Hence a partial Calendarr-Info.plist that generation merges into. It
sits at the project root rather than inside the target folder: that folder is
a synchronized group, which would also copy the file as a resource and collide
with the processed one.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>