Test - Update Schema V8

Update of the schema seems to be working correctly:

<img width="1866" height="701" alt="Image" src="https://github.com/user-attachments/assets/cc2f3fd5-6be7-43a7-889d-90ab22514a69" />

It would be nice to have a pop up message that confirms the upload went well and the possibility to name the custom schema before committing the upload.