Forgejo has a limit of 5000 characters per mermaid graph. We started
hitting this for some issues. Regenerate a somewhat simplified version
of the subtree in this case which hopefully does not hit the same limit
again.
The techtree manager is a CI tool that derives the techtree graph from
the forgejo issues in this repository. It then adds graph
visualizations to each issue and the wiki, to give an overview of the
tree.
Rahix