A few files related to the design. Currently notes for myself, which do not
necessarily make sense without implicit context.

One day, we should have a proper `docs` directory with coherent documentation.

---

> Great design requires great workarounds.
> 	— [craftyguy in `#main:postmarketos.org`](https://matrix.to/#/!zpvMifoucHSiUsVFgl:postmarketos.org/$3jZVEA-rQFeQgg8NPKzW1gD7rBU3aX7O8W7NeVCtZNo?via=matrix.org&via=tchncs.de&via=kde.org), with a small change by me.