Hiding or showing a calendar on the web sets enabled=false + sidebar_hidden
server-side, so the server stops returning that calendar's events entirely.
The app synced the filter toggle TO the server (setCalendarHiddenSynced) but
never pulled the server's sidebar_hidden flags back, so a calendar hidden or
re-enabled on the web (or another device) was never reflected until a manual
sync or relaunch — the "hide it on the web and the app won't bring it back" bug.
Add reconcileCalendarVisibility(): pulls the account lists and updates the
local hidden set from the server's sidebar_hidden flags for external calendars
(local/ical keys untouched). It runs before the initial load, on manual sync,
and on a new ON_RESUME lifecycle hook — forcing a refetch when the set changed
so a re-enabled calendar's events reappear on their own. Mirrors the iOS fix.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
ca4c875659