Update:
Dealer says that the battery finally charged to 100%, and further acknowledged there is clearly an issue. Later on they also reported that the truck is now throwing a code indicating a bad battery cell. They're "waiting for it to act up" so they can pinpoint the bad cell for replacement...
I've been scouring this forum looking for someone reporting this exact issue, but I've come up short so I decided I should post my experience in case others run into this problem. This started a few days ago, so hopefully I'm remembering all of these details correctly. I will preface this with...