Refactor the structure, and formalise the workflows

Three things at once. The publishing order flips — the making-of book goes FIRST, because it is more mature, has a market now, and carries the workflow ideas, while the graph book “needs the technology advancements that we're going to do in the making-a-book”. A restructure is proposed around books at the top level, with v1 and v2 renamed v0.1 and v0.2 as versions of the graph book. And the beginning of a compatibility model for technology shared between books. The agent's reading agrees with the principle and disagrees with the restructure on measured grounds: v1 and v2 are timestamps, not types, and 172 of the 200 frozen files sit outside the book folder.