Accessibility Improvements

[neomantra]

Per this HN post, terminal charting can be challenging with respect to accessibility. Capturing some ideas for paths of work:

• Add guidelines to the README with respect to accessibility, so devs may be aware of the issues.

• Introduce alternative rendering modes, controlled by environment variables:

  • NTCHARTS_BLANK so users with screen readers will have blank canvas rendering

  • NTCHARTS_ALT with an experience / output appropriate for a screen reader or other devices?

    • Would have to be chart dependent... e.g. meters/guages could emit their value, but what for a line chart?

    • Send some rendered representation of the data to an LLM which summarizes it and renders descriptive text? This is an example where assistive features could also help other users.

    • How would this interact with BubbleTea, focus, event loops, etc.