It's my segfault
After finding an issue with the session cookie, Jeff pointed out that 404 is the default return code, which also happens to disable cookies from being sent. With that out of the way, I started poking through the source of pages sent by my plugin, and fixed some errors having to do with missing template tags and variables. In doing so, I unearthed two segfaults, which I should have fixed tomorrow, along any remaining template errors. Then, on Friday, I can finally start real functionality testing! That means logging into my BZFS with a fresh client, then trying every one of webadmin’s buttons and knobs and seeing what happens. Whee!