insights: update backend dev docs (!39675) · Merge requests · Administrator / sourcegraph · GitLab

Administrator requested to merge leo/insights-backend-docs into main Jul 29, 2022

Created by: leonore

closes #38478 (closed) (removes a lot of outdated stuff)

open https://github.com/sourcegraph/sourcegraph/issues/39674 for architecture diagram, which is a bit more involved than just a docs change.

Test plan

sg run docsite and check everything looks fine