Update on DSv4Flash: It ran from about 1:40am to roughly 5:30am and actually delivered a full revamp of the app I had asked it to rework (a project from a couple of years ago I wanted a completely fresh take on, 1600SLOC, web-based).
I've had it do two updates since, and while not speedy, it's delivering good work with steady improvements, and the server is stable, with no visible regression in approach (at least under omp) as it passes 50% of its 250k context window. This is extremely exciting. I'll be cutting my Heremes agent over to it this evening. Will report back.