In-app glossary integration

[hauf-toni]

Is your feature request related to a problem? Please describe.
Users may encounter specific terms within the content of the app that they are unfamiliar with. Currently, there is no way to provide instant explanations for these terms within the app, which can hinder user understanding and accessibility.

Describe the solution you'd like
Implement a frontend feature that highlights glossary terms directly within the app content. When a user encounters a term that exists in the glossary, it should be displayed in a distinct style (e.g., underlined or highlighted, as proposed by ui-ux). Tapping on the highlighted term should open a small popup or modal providing the definition of the term.

This feature would involve:

• Fetching the glossary terms from the backend.
• Automatically detecting and highlighting terms within the app content.
• Displaying a tooltip, popup, or modal with the term definition when the user taps on the highlighted word.

Describe alternatives you've considered
Another option would be to use a glossary icon next to the term instead of direct highlighting, which could reduce visual clutter but might be less intuitive.

Additional context
Backend-Issue: #3092 and #3090

[hauf-toni]

Design-Brainstorm:

• Display glossary terms with dotted undeline by default.
• Display a tooltip on hover with the term definition.
• Open a modal on click with more detailed information or navigation to the glossary page.

[steffenkleinle]

* Display a tooltip **on hover** with the term definition.

On native/mobile this would just not be implemented, correct? Or can you think of any other solution?

[hauf-toni]

No final decisions have been made yet, I'll let you know as soon as a design is available here @steffenkleinle