Pretty simple, pretty sweet. Has some good flavor. Layout is clean, though I personally would like a little more to look at throughout the pages. Limited time-frame, though, so I understand focusing your efforts on the latter pages, in particular.
I do find it a bit hard to navigate the document. Not to a disastrous degree or anything, but I don't think this mission is long enough to necessarily need a glossary-style page to define its nouns. In my opinion, it might make more sense to position the descriptions for the Fractal Vast, Mothlight Core, and Red Light Protocol nearer to the places they come up in the actual mission for ease of access. That might have been a bit trickier to organize layout-wise, but it would have made more sense to my ADHD brain. Having all of the terms grouped together and described on one page makes it a bit tougher for me to stay focused while reading through. This might have been improved by just shoving the page at the end or something, though.
I love how evocative the Fractal Vast is. Each location is better than the last (though there does appear to be a typo in cell 3!) and you do a fantastic job of connecting characters with the cells they're found in. I think the Red Light Protocol being the only potential obstacle at the Mothlight Core is a bit underwhelming in terms of just reading it out of the document, but I think it would probably play well at an actual table. It's a good, stylish parting blow for sure. You could very easily elevate the mission by pairing something with a bit more of a thematic/narrative punch with it, though. As it stands, this is a super fun, brisk TTRPG mission, but it absolutely has the potential for some real juice to be squeezed out of it. Something that really makes it yours.
Getting back to what I was saying about the layout earlier, it's a bit underdone for my taste. Don't get me wrong, it looks nice, has no frills, and is more than good enough for the purposes of a jam like this, but I can definitely feel the difference in care between pages. The last few pages clearly got more love than the first few, and there isn't much color throughout the entire document. The first few pages are particularly monotonous visually, which doesn't make it the easiest for me to read.
There's also a lot of unused space. That space would have been used well if it contained additional details about some of the locations, characters, phenomena, etc. Not that the mission is particularly lacking in that department, but a little extra might have added more character to the mission.
Overall, though, this is a great mission! You did a good job with this one. Congrats!