Add request API key support

convert.go

@@ -11,6 +11,7 @@ func toDomainRunRequest(req RunRequest) domain.RunRequest {
 		PromptID:      req.PromptID,
 		PromptVersion: req.PromptVersion,
 		ProfileID:     req.ProfileID,
+		APIKey:        req.APIKey,
 		Inputs:        toDomainArtifactRefMap(req.Inputs),
 		Vars:          copyStringMap(req.Vars),
 		Execution:     toDomainExecutionTargetOverride(req.Execution),
@@ -72,6 +73,7 @@ func fromDomainGenerateRequest(req domain.GenerateRequest) GenerateRequest {
 		Target:           fromDomainExecutionTarget(req.Target),
 		TargetPresence:   fromDomainExecutionTargetPresence(req.TargetPresence),
 		StructuredOutput: fromDomainStructuredOutputSpec(req.StructuredOutput),
+		APIKey:           req.Target.APIKey,
 	}
 }