Add entity related charts

This page is a capture in the next bucket of the product backlog — a pre-sprint idea, not yet pulled into a sprint as a story.

Have a think on things that could benefit from a graphical display at the entity level. Some ideas:

• entity history: number of additions, edits, deletions over time. Bar chart. Makes it easier to pick up weird system problems. This is overall across all instances.
• single entity history. In the history tab for that entity, graph showing the changes to the entity over time.

In addition, we need to be able to support charts in ASCII so that we can see them in the REPL. This will be used by the AI agents.

Links:

• GH asciichart