After a fresh today reading in the night (02:00 on the rig) went stale (05:00), Hold.stand_in(as_today=True) served the 17:05 "tomorrow" figure again until 06:00: the plan went back to 95 %, the latch took it, and Leftover solar charged back up. read_sum() now skips that stand-in once every today sensor has given a fresh reading for the day (Hold.replaced()); the stale newer reading follows the OPT-27 rules. Co-Authored-By: Claude <noreply@anthropic.com>