Data³ - metrics dashboard built with Datasette

[20after4]

So I made a thing. It's based on datasette and heavily inspired by @rclement's Datasette-dashboards plugin. I started out just extending that plugin with intentions on submitting a PR upstream, however, my changes got to be so drastic that I couldn't see any hope in merging it with upstream. It's now been almost entirely rewritten, with the ui mostly in client-side javascript and barely a trace of the datasette-dashboards code. It is still using the same sort of configuration in metadata.yaml, and looks visually similar. Beyond that it's all new.

Demo: https://data.releng.team/dev/-/ddd/dashboard/project-metrics
Source: https://gitlab.wikimedia.org/repos/releng/ddd/-/tree/jsify

Note: To see anything useful on the demo link: select a project by typing e.g. platform or kanban to get a list of completions, then select a date range and click update.