Here’s a quick solution using about $200 of Amazon parts. The oven came with an inappropriate fluorescent bulb, so the light and ballast were removed, then the 120v 20W 405nm array was wired into the timer and I went orange County Chopper on the oven housing using the bezel of the light as a guide for the apature.
Quite happy. $200 and about 2.5-hours of work to get a setup that meets all of the criteria in the post-cure white paper.
I have not tested the luminous flux yet, but it should be close based on power and objective distance.