EnsureChildAgentRunInput

Identifies the child run to create or recover.

Field	Type	Required	Description
`parentRunId`	`ID!`	Yes	Run that delegates the work; the caller must hold its current execution credential.
`toolCallId`	`String!`	Yes	Tool call in the parent run that starts the child; the pair identifies the child run.
`request`	`JSON!`	Yes	Child agent and the input to start it with.