Nothing here yet.
Since a prompt change means a refit and the calibration rerun takes about 3 minutes, I'd store each fitted T with the prompt version it came from and refuse to load one fitted on a different version. The intent step landing at 1.138 on BANKING77 and 0.619 on CLINC150 shows how far apart two fits can sit.
With a 3072-bit key written as 0xC00 getting flagged, I'd want to read the reviewer's stated reason next to the flag. If it says the key is too small, it misread the value. If it complains about a magic number, a style note got scored as a security finding. Did the false positives come with reasons you could sort that way?
Ten days of calling parser breaks prompt problems sounds familiar to me. I'd still watch for a reply that passes the schema with a wrong value, the right vendor and a confidently wrong amount, which only your field-level accuracy on the fifty examples would catch. When the failure rate dropped by half, did that count both kinds or just schema failures?