Telemetry
data class TelemetryCall(val callId: String, val agentId: String, val agentVersion: String? = null, val modelId: String? = null, val functionId: String? = null)
Correlation envelope for one agent invocation (one generate/stream call). Every Telemetry event of that invocation carries the same callId, so an integration can reconstruct per-call traces even when a single agent instance serves concurrent calls. agentId/agentVersion mirror Agent.id/Agent.version (parity gap #33: "useful for telemetry"); functionId comes from TelemetrySettings.functionId.