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.
Bernardo Magri
0582444c61