feat: backend native executor implement

internal/backendupdate/progress.go

@@ -0,0 +1,20 @@
+package backendupdate
+
+import "yms-daemon/internal/transaction"
+
+// Progress is one live update event sent to the local CLI. It is observational
+// only: delivery failure must not change the persisted update transaction.
+type Progress struct {
+	TransactionID string
+	State         transaction.State
+	Message       string
+}
+
+type ProgressReporter func(Progress)
+
+func operationLabel(inputType string) string {
+	if inputType == inputTypeCurrentRelease {
+		return "restart"
+	}
+	return "update"
+}