Remove default components & Refresh component UI

[vega]

Hi,

I have a few questions and suggestions regarding component management. I've tried digging through the documentation but haven't found anything that addresses these yet:

1. Component refresh: Is there a way to refresh components in the editor without restarting it? If not, would it be possible to add a button for this in the UI? Currently, the refresh behavior seems almost random. Sometimes old components that no longer exist still appear in the list.

2. Default components: I've noticed I can't fully remove the default components, which I'd like to do for a clean starting point on new projects. Is this expected behavior, or am I missing something?

3. Component registration: I'm a bit confused about how components are registered in the first place. I've seen some JSON files that seem related, but I'm not sure how it all works.

Apologies if I missed some docs! 

Thanks in advance!