Let me clarify for all the non-mechanics, you included. Don't take this as cut towards you, I'm sure you know things that I don't. What I do know are brakes, specifically Brembo style fixed(not floating) systems. You referred to "caliper pins," even stating you had to pull the caliper to do so...
Leasing doesn't work this way, as you're not the owner of the vehicle. This is one reason why it's wise to never put money down on a lease. In the event of a total loss, you recoup none of it.
I bought a Rivian NASC adaptor from the Gear Shop for my wife's Polestar, because A: it's the same adaptor that Polestar is SELLING to their owners, B: Polestar is charging (no pun intended) $320 for one.
I complained exactly zero times.
The wire in question that the OP is holding is the ABS wheel speed sensor(wire), which shares the bracket that holds the hydraulic brake hose in place . You can tell by the bolt head it was removed at some point, possibly some sort of inspection, but was carelessly not reattached properly. I'd...