#### Background
From T297625:
We learned from user testing, as well as research performed by the Editing team that it would be helpful for users to see talk page content in context of an article.
#### User story
When reading the article, I want to read the article’s discussion topics without having to leave the article, so that I can decide to contribute to the article or start a new discussion.
#### The task
- [x] Create high fidelity mocks and interaction definitions for a talk pages side panel.
- [ ] Include way to access the entire talk pages view
For more details, check out the parent task: T297625
#### Designs ([Figma](https://www.figma.com/file/SjzGvgIwlX6nZvGDFL4uWP/Talk-pages-side-panel-T299033))
| {F34922095} | {F34922097} | {F34922099} | {F34922101}
- Accessing the article talk page button next to the article title opens up a side panel
- Talk page subjects take users directly to the details view of a subject (full screen)
- The app bar title in the side panel, as well as the full screen icon take users to the full view of the talk page (screen 4)