I need a fresh set of eyes on this one. Here are my voltage measurements:
Q1: E 0v, B 0.17v, C 8.36v
Q2: E 0v, B 0.18v, C 8.52v
Q3: E 0v, B 0.15v, C 7.36v
Q1: E 0.26v, B 0.17v, C 5.79v
Can you provide pictures of your switch and the jack connections. Also what kind of solder are you using. It’s hard to tell if there are cold joints or is it lead free solder.
There isn't a picture of the jacks, but do you have the sleeve and ground swapped on them? I think they'd still pass a signal with the pedal circuit bypassed
Q4. The emitter voltage you measured is higher than the base voltage. If that is correct then I think that will turn off that transistor. I would be looking at the component values around those legs to see if you may have the wrong value there somewhere