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.
Add strict /me identity, atomic paged calendar discovery, and resumable primary-calendar v1 delta synchronization through the durable provider cache. Keep opaque continuations on trusted Graph URLs and retain credentials only per operation.
Document that stable Graph v1 delta covers only the primary calendar; secondary calendars still require a v1 reconciliation or beta dependency decision.
Verified: 18/18 normal, 18/18 -Werror, and 18/18 ASan/UBSan tests.
