I checked the public site instead of assuming. It had no content system. Every word was typed into the page code. The insights route was a short stub. It claimed the posts would come from a CMS later. The project file did not even depend on one.
I planned one source for a piece of writing, so the site and a post I send are not two drafts I have to keep in step. I did not build it this week. The finding is the part I did not want to lose. I had been talking about a blog on a site that could not hold a post without a code change.