How to add actions (analyzer, popover) to a widget with a single f7-block and only svg elements

Correct. Only oh- components accept the action configurations.

Without seeing the full configuration you’re working with, it’s hard to say what the best way to do this would be. From the snippet you’ve provided it looks like the best option is to just put that svg icon inside an oh-link:

- component: oh-link
  config:
    action: analyzer
    ...rest of config
  slots:
    default:
      - component: svg
        ...rest of svg

Another good option, depending on the rest of the structure might be to take advantage of SVG’s foreignObject element: