try to blow up before it's an actual problem

doRelease.go

@@ -27,6 +27,14 @@ func doRelease() bool {
 		return false
 	}
 
+	if shell.Exists("go.mod") {
+		log.Info("go.mod exists ok")
+	} else {
+		pwd, _ := os.Getwd()
+		log.Info("go.mod disappeared. need to run go mod init and go mod tidy here:", pwd)
+		return false
+	}
+
 	curName := me.current.Status.GetCurrentBranchName()
 	mName := me.current.Status.GetMasterBranchName()
 	if curName != mName {

releaseBox.go

@@ -153,7 +153,7 @@ func createReleaseBox(box *gui.Node) {
 						log.Info("maybe ALL DONE?")
 						buttonEnable()
 						worked = true
-						break
+						os.Exit(0)
 					}
 					log.Info("doRelease() failed")
 					worked = false