Great work and writeup. I think my favorite part of the whole thing is that you clearly started with the goal (or somewhere early on decided that was the goal)

Great work and writeup. I think my favorite part of the whole thing is that you clearly started with the goal (or somewhere early on decided that was the goal) of finding a bug and kept going until you'd landed it. That's the difference between a true hacker at heart and someone who just stumbles across something. Tenacity.