487859bff0
Doc/XML-comment drift + small adherence fixes across 17 modules. Highlights: - Host-017: site CoordinatedShutdown ordering — SiteStreamGrpcServer gains CancelAllStreams() (refuse new streams, cancel active), wired into Program.cs site branch via ApplicationStopping. - InboundAPI-021: ParentExecutionId now travels on RouteToGet/SetAttributes symmetric with RouteToCallRequest; RouteHelper stamps from _parentExecutionId. - ClusterInfra-012: ClusterOptionsValidator now requires both seed nodes. - Comm-018: SiteCommunicationActor.HeartbeatMessage.IsActive derived from cluster leader check (was hardcoded true). - DM-020: reconciliation audit row attributes the current user, not prior deployer. - SEL-019: EventLogPurgeService early-exits on standby via active-node check. - Plus comment/XML-doc accuracy fixes across AuditLog, ConfigurationDatabase, NotificationOutbox, SiteRuntime, SiteCallAudit; doc refreshes for Component- Commons / -ManagementService / -CLI / -ExternalSystemGateway / -HealthMonitoring / -Transport / -ConfigurationDatabase; CD-023 index-name doc alignment. 11 new regression tests (RouteHelper x4, SiteStreamGrpcServer x2, ClusterOptionsValidator x1, SiteCommunicationActor x1, DeploymentService x1, EventLogPurgeService x3). Build clean (0 warnings); InboundAPI/Communication/ Host suites all green. README regenerated: 112 open (was 136).