Improve description with markdown support

[xuang7]

Feature Summary

Currently, the dataset description is stored as a plain string (VARCHAR(512) NOT NULL). This makes it difficult to present richer information such as structured metadata for the datasets, links, or formatted notes (sections, bullet points, tables). Adding Markdown support would enable more informative descriptions, improve page usability, and be reusable across multiple parts of the UI (dataset and workflow descriptions).

Proposed Solution or Design

Render descriptions as Markdown on dataset detail pages, and provide a Markdown editor UI for dataset owners.

There are two approaches for the editor:

• Library-based editor (e.g., angular-markdown-editor, or another editor wrapped in Angular): richer features, but adds dependencies and may introduce CSS conflicts

  • feat(gui): Add Markdown Support for Descriptions #3716 implements the library-based approach using angular-markdown-editor and increases yarn.lock by ~700 lines.

• Native <textarea> + ngx-markdown: no new dependencies and works well in ng-zorro modals, but the toolbar is template-based and less feature-rich.

Editor example:

example for preview

Impact / Priority

(P2)Medium – useful enhancement

Affected Area

No response