Rig FAIL (TEST-23, f3f9483). F-1: the hold ended at each guard step because
grid + site_batt_w added a new meter reading to a battery reading up to 10 s
old. It now ends only when no battery reading may pre-date a step up of its
command (Controller._batts_settled()). F-2: while the pause holds, a pack in
maintenance CHARGE at or under its peak reserve is limited to 0 W, so it gives
only what the guard claims for the peak. Sim: Lag.batt_period_s (a held 10 s
register). Tests: test_maint28b.py. DECISIONS updated.
Co-Authored-By: Claude <noreply@anthropic.com>
