I had a good week. The file maintenance system works better, and files now know their 'modified' dates.
The new file maintenance system now works smarter and more productively. Previously, it did rare bursts of hard work in idle time, and now it does small amounts of work all the time. You do not have to do anything--it will now keep up with its behind-the-scenes queues more quickly and quietly, hopefully without giving you any hassle. The only significant difference is file maintenance no longer occurs on shutdown. If you are not interested in any details, you can skip the following completely.