The lack of a response is no trouble; I understand you've had a lot on your mind! That said, Itch isn't great for lengthy back-and-forth; that's why I offered an alternative. ;P
No rush, though! I'm content offering my feedback where useful.
I can sympathize over technical ambition - I've bitten off more than I could chew many times in personal and professional projects. I'm glad to hear you'll be making the attempt! It'll be cool to see what you make of it.
Referring to the dialogue systems: I look forward to seeing their improvements! I can definitely sympathize with the process that leads up to getting something done the cheap way to save time. ;3
Good to know there's a workaround! I'm sorry that I can't help narrow down the issue much further than that; I'm not a game developer by trade, so I don't know enough about game engines to debug something odd like that.
That said... I may actually have some info that could help mitigate the issue. Most games I play use a Windows API (that I had to Google, as I'm not familiar with it) to prevent the computer/monitor from sleeping until the game is exited. It wouldn't work in an HTML5 version, but there's probably some other solution you could use from a browser; I believe YouTube may do something like that.
Finally - I'm glad that my feedback is useful! I'd very much like to help you succeed. :3
Edit: Ooh, I like the new art!