feat: open proxy token file

client.go

@@ -29,9 +29,15 @@ func runClient(args []string, openerName string) int {
 		return 2
 	}
 
+	token, err := envToken()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "open: %v\n", err)
+		return 1
+	}
+
 	c := &client{
 		base:  "http://" + envAddr(),
-		token: envToken(),
+		token: token,
 	}
 
 	exit := 0