Focused library defect repair for BLE climate sensor U2. SHTC3 exposed pad terminal5 is incorrectly named NC/type Not Connected. Datasheet https://media.digikey.com/pdf/Data%20Sheets/Sensirion%20PDFs/HT_DS_SHTC3_D1.pdf page6 states center pad internally VSS, should be soldered mechanically and may connect PCB GND. Correct pin5 identity to VSS_EP and type Ground without altering sourced footprint geometry. Confirm existing EP solder land present and linked pin5; inspect model if present. Publish repaired version and return UID/version/pin changes. If public part uneditable or tool blocked, report exact failure, do not alter parent design.