Rename AUTO to CYCLE on key c and relay browser keys to stdin

harness/main.go

@@ -169,6 +169,14 @@ func run(runFor time.Duration, at string, out io.Writer, args []string) error {
 		return err
 	}
 	go io.Copy(stdin, os.Stdin)
+	consoleMu.Lock()
+	console = stdin
+	consoleMu.Unlock()
+	defer func() {
+		consoleMu.Lock()
+		console = nil
+		consoleMu.Unlock()
+	}()
 	if err := cmd.Start(); err != nil {
 		return err
 	}