sputtering engine

Hey guys, looking for opinions on what could be causing this rough start/no start. I have a 2024 JLU Willys 3.6L, manual trans. Got ~27.5k miles on it. Today I got in and tried to start it up (~32F out, cold start). The engine turned over initially but then could not maintain idle, sputtered...

I've had my Wrangler for almost 5 years and this problem started sometime last summer. I've searched through hundreds of forum threads & have yet to find anyone with the same problem as me. Had it at the dealer a year ago & they replaced the water pump which didn't fix it... No codes show up so...