Bottom line: The contents that used to be here have been refactored and moved to github.io, where their management is now done almost entirely by machine.
Longer explanation: My coding and data are now more and more on GitHub. Local file synchronization to the cloud is easier there, using markdown and git rather than WYSIWYG-editing my page sources directly and only on the cloud. So I’ve migratedto my github.io the contents that would previously have appeared here. I don’t have time to make things look as good, but github.io is faster for me to keep updated, and thus stands a better chance of my not just leaving it alone for too long.