Files blueprint not working / unable to delete files in panel list

The CMS Questions
1

I created the following files blueprint here: site/blueprints/files/signets.yml

title: Signets
accept: image/svg+xml
focus: false
image:
  cover: true
  ratio: 1/1
  back: white
fields:
  alt:
    label: Alternative Text
    type: text

Unfortunately, I am unable to use this blueprint. I called it like this in respective templates such as site/blueprints/site.yml or site/blueprints/pages/default.yml:

fields:
  icons:
    label: Social Media Icons and Others
    type: files
    template: signets
    image:
      ratio: 1/1
      cover: true
      back: white
    help: Upload further SVG files to use them anywhere on your site.

I can upload any images with any kind of extension and the alt field does not appear. Did I miss anything? —

The uploaded files show up. I can remove them from the list in the panel but the images stay hidden in the folder. I have to delete every image separately. If I have removed it from the list before, it is no longer displayed in the panel, so I can no longer call it individually and delete it. I find that very impractical. All stored files showed up in the panel list and I could delete the files directly in the panel list. Did I miss anything?

2

Yes, I missed the upload: To use a template in a files field, I have to change it like this:

fields:
  icons:
    label: Social Media Icons and Others
    type: files
    upload:
      template: signets
3

Yes, I missed the sections: Calling and deleting files in a panel list works fine with a files section such as:

sections:
  files:
    label: All Files
    type: files