slave cylinder - I do not think the squeak is coming from here but can easily be heard, I did grease inside the dust boot with caliper grease - dealer said they did as well. Did not eliminate the creaking.
from inside - the dealership replaced the pedal assembly at 16K miles, noise still happening. Returned to dealership for follow up (and oil change) at 17K, they're saying the pedal assembly is defective, ordering another one. I asked if they lubed the clutch fork/throw out bearing, was told no they did not. I'll ask them if they can do that when I bring it back for the 2nd pedal assembly replacement.
This only starts happening after the engine is fully warmed up, oil temp in 210 range, ambient temp above 80.
(yes, I'm a woman, excuse the work footwear!)
Looking for guidance in how to communicate effectively with dealership to get this resolved. Or have a plan to handle this as regular maintenance.