MediaObjSource and MediaObj.source, createMessage with a source, findTwoPersonChatSession, and the impersonation/Enter-As access-log events (KamoCollab CP00 T4)

Shipped

October 5, 2026 at 1:16 AM UTC

Author

Kamo

Commit

3020857

- MediaObjSource {MEMBER, SYSTEM, SERVICE}; MediaObj.source (STRING, column SOURCE, length 16, nullable, no default) and sourceOrMember(), which reads NULL as MEMBER. - MediaService.createMessage gains a seven-argument overload taking the source; the six-argument overload delegates with null, so every existing caller stores NULL. - **************** b): the search half of findOrCreateChatSession, extracted; findOrCreateChatSession creates only when it is empty, so its behaviour is unchanged. - AccessLogEventType appends IMPERSONATION_STARTED, IMPERSONATION_ENDED, ENTER_AS. The MEDIA_OBJS.SOURCE column must exist (CP00 Task 3 DDL) before this is pushed.