Scheduler Event Calendar Import Export

ICS import and export for calendar events is not yet available in Orbital.

• Planning interoperability with calendar clients that speak iCalendar (.ics)
• Documenting the intended catalog entry until the feature ships

Until ICS support ships, convert between your API format and PlannedEvent at boundaries. Use OrbitalDateTime and optional recurrence_rule strings when round-tripping RRULE data manually.