Update HandleDelayedResponse to return to complete output

pkg/cli/tty.go

@@ -2,6 +2,7 @@ package cli
 
 import (
 	"fmt"
+	"strings"
 	"time"
 )
 
@@ -33,12 +34,14 @@ func ShowWaitAnimation(signal chan any) {
 }
 
 // HandledDelayedResponse writes a waiting animation (abusing \r) and the
-// content received on the response channel to stdout. Blocks until the channel
-// is closed.
-func HandleDelayedResponse(response chan string) {
+// (possibly chunked) content received on the response channel to stdout.
+// Blocks until the channel is closed.
+func HandleDelayedResponse(response chan string) string {
 	waitSignal := make(chan any)
 	go ShowWaitAnimation(waitSignal)
 
+	sb := strings.Builder{}
+
 	firstChunk := true
 	for chunk := range response {
 		if firstChunk {
@@ -47,5 +50,8 @@ func HandleDelayedResponse(response chan string) {
 			firstChunk = false
 		}
 		fmt.Print(chunk)
+		sb.WriteString(chunk)
 	}
+
+	return sb.String()
 }