Add markdown rendering for script and category titles to improve the
presentation of textual content.
- Introduce reusable `MarkdownText` for markdown rendering.
- Incorporate markdown styling into dedicated SCSS file for clarity.
- Define explicit font sizes for consistent visual experience.
- Apply `MarkdownText` usage across UI for unified markdown rendering.
- Streamline related styles and layout for improved maintainability
- Set font sizes explicitly for better consistency and to avoid
unexpected inheritence.
This enhancement enables richer text formatting and improves the user
interface's flexibility in displaying content.
