You're welcome! I tried to mention everything that came to my mind hoping that at least some of the comments could be useful.
Good to know that there is at least some ways to get past the mage dog. I didn't think of either of those solutions.
And for the browser build taking too long... yes for some reason that always goes like that. Even after having done it in multiple jams already there is always something wrong with the first attempts. Now, I usually try to do the build first time on the morning of the submission dead line or even previous evening even if they game is completely unfinished, just to check that it's going to work. Then it's usually easier to do again later with the same settings.