It all worked as intended, and I have played quite a bit (maybe 80 years) beyond the documented part, fighting successfully against two common spoilers, and with just as much drama to keep it interesting. However, I had lost all my documenting screenshots, and all the former photoshop files and the assembled art material while stupidly shift-selecting some files on my desktop that I wanted to delete. I failed to notice that this selects horizontally before vertical, and missed having my working folder of this game, and another 300mb work project of mine moved to garbage, and later also deleted. I only noticed a couple days later, and by then it was too late for any emergency recovery.
...But!: A couple months later, I was desperate, because that other project's lost work was really hurtful, so I researched randomly for file recovery, and amazingly found beyond the hundreds of people confirming that such deletes are of course lost, one person who mentioned that the fantastic Windows 7 keeps complete compressed copies of your desktop stored away somewhere! Lucky me for having current projects on desktop always, because there I found all my lost work and also the Zenit folder.
...So the only thing that held me back from then on was that I had lost contact with the game and narrative over so long. I tried to read back into it, but it was cumbersome to get the feeling for it again, especially after having an interesting new Aurora game running already. I may do it at one point though. Currently there are enough screens for 3-6 posts still waiting in line, and I successfully tested that I can still play the save too.