Read documented Graph v1 calendarView pages for secondary calendars and publish each finite window only after the complete bounded listing validates.
Add schema-v2 per-window event membership so moved-out occurrences are evicted without being mislabeled as remote tombstones, while overlapping windows retain shared instances.
Verified: 18/18 fresh normal, 18/18 -Werror, and 18/18 ASan/UBSan tests.