15:36:23 cold1: persistent cache boot validated; operator DMM 4.175 V; monitor 30 s started (15 min window), pull -> logs/b10/b10b5/cold1-mon.txt
15:38:11 USB off >=10 s (0.20 A before), USB ON 0.27 A
15:53:28 cold1 END: 15-min window clean (32 samples, 0 ALERT/FAULT/latch); monitor stopped; board left CHARGING (FAST) on the persistent b10b5 cache
