jcoffey-dev
5f383c3726
A confidential event (CLASS:CONFIDENTIAL) was treated as secret: for anyone the calendar was shared with it didn't exist. CalDAV clients such as Thunderbird use CONFIDENTIAL for "show time and date only", so their users' events vanished from sharees' calendars instead of showing as busy time. Events are stored as iCalendar, where a JMAP "secret" event is also CLASS:CONFIDENTIAL, so the two can't be told apart. A confidential event, whether set over CalDAV or as JMAP "secret", now shows sharees what a private event does: its time, recurrence and basic metadata only. Matching it on title, description, location or participants finds nothing, copying it out is refused, and its blob is not downloadable by sharees. The owner still sees all of it. Test: a sharee got notFound for a confidential event and couldn't list it; now it is listed and shows its start and duration only, with no title, description or participants, isn't found by title, and can't be copied, as for a private event.