Add checksum verification and retry logic- Add SHA256 checksum verification for downloaded images- Add qemu-img check verification before and after operations- Add retry logic (3 attempts) for download, upload, and commands- Verify image integrity after customization- Verify uploaded image on Proxmox host before import- Auto-remove corrupted images and retry download

customize.go

@@ -28,6 +28,12 @@ func customizeImage(config *Config) error {
 		}
 	}
 
+	fmt.Println("Verifying customized image...")
+	if err := verifyImage(imagePath); err != nil {
+		return fmt.Errorf("customized image verification failed: %w", err)
+	}
+	fmt.Println("Customized image verification passed!")
+
 	return nil
 }
 
@@ -43,15 +49,15 @@ func checkDependencies() error {
 
 func resizeImage(imagePath, size string) error {
 	fmt.Printf("Resizing image to %s...\n", size)
-	
+
 	cmd := exec.Command("qemu-img", "resize", imagePath, size)
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
-	
+
 	if err := cmd.Run(); err != nil {
 		return fmt.Errorf("failed to resize image: %w", err)
 	}
-	
+
 	return nil
 }