Feature: Enable Markdown in Uploaded Item Row widget captions

[VanessaVenti]

Problem being solved

Currently, captions in the Uploaded Item Row widget are plain text only, which limits curators’ ability to provide clear and accessible contextual information.

The lack of formatting support prevents:

• Adding hyperlinks to catalog records, viewer pages, or related content
• Inserting line breaks to improve the readability of structured text (e.g., long ID numbers or metadata fields)

This results in cramped, hard-to-read captions and reduces the flexibility curators have when designing exhibits.

Feature details

Enable Markdown support or lightweight text editing in the caption field of the Uploaded Item Row widget.

This would allow curators to:

• Add clickable links using standard Markdown syntax (e.g., label)
• Use line breaks and basic formatting for clarity and structure
• (Optionally) apply minimal styling such as italics or bold, if consistent with Spotlight’s rendering

This feature should align with Markdown support already available in other parts of Spotlight to ensure consistency.

This issue came from the Spotlight Community Roadmap.

Acceptance criteria

• Captions in the Uploaded Item Row widget render Markdown syntax (e.g., links, line breaks)
• Curators can add clickable links to external resources or internal pages
• Line breaks are respected in the caption display
• Captions without Markdown remain unaffected (no display regression)
• Markdown support is consistent with existing Spotlight widgets or content blocks