What is a parent application and a mini-kernel?

Question

Vue.js

Please explain, I can’t understand what they want in the task and how is it done?

Develop a parent application that will serve as a container for connecting child blocks with business logic.
The container should include a header with a menu of two pages and an area for loading content for each page (blocks).
The content of child blocks should be loaded dynamically with lazy loading (separate bundle).

Next, you need to develop a mini-kernel that will be loaded with the parent application and have an api for loading additional plugins. The core must be accessible from the code of each page of the parent application.

The first core plugin is a plugin that implements the data bus pattern. It implements a global data bus at the application level. Each component of the system can write events to it or read them from it (via a subscription).