Finding from usability testing conducted in T167129:
Participants across both usability studies often used the ‘Main page’ as the entry point to access articles, they wanted to see a clearer ‘introductory’ text and high-level contents similar to the main page of the WikiMed pack.
Proposed solution:
Part A. Show a notification/message on the Main page of every article pack advising of its purpose
For the side-loading version of the Offline Library feature, we may insert a standard message into the Main page.
Approach 1: Dialog message  | Approach 2: Dismissable 'card' over the Main page content  | Approach 3: Non-dismissable message within Main page content (below title and description:  |
NOTE: It was decided to use Approach 3 both for simplicity of implementation and also as being more flexible if in future we create our own article packs with improved Main page formatting (that does not require this message).
==== Part B. Add a separate 'Main page' card in the feed for each article pack in the Offline Library.
This enables users to more easily access the "Main page" of article packs without needing to navigate to a pack's details screen.
NOTE: This part of the ticket is a a dupe of T174157
