SAFETY-125: a grid charge counts a late meter reading's seconds; the guard row says "over" when it is

A meter reading late near a quarter's end left seconds the projection did
not count (SAFETY-99), and charge_headroom_w() read them as room: the cheap
run (and price trading, and the N=2 maintenance charge) went back to full
power in the quarter's last seconds and the quarter could land over a banked
month peak or the cap. peakguard.charge_room_w() counts those seconds at the
held reading for the charge only; the guard's floor is unchanged.

The guard row said "idle, heading for 5 814 W, under this month's 5 413 W
peak". Over the limit at the current rate the row and the month-peak line
now say so, and that the grid charge is cut back.

Version 0.19.2, CHANGELOG, DECISIONS. test_safety125.py new; the lag pins
in test_price_run_fixes.py and test_opt20.py and the AST pin in
test_arbitrage.py follow the change (see the pull request).

Co-Authored-By: Claude <noreply@anthropic.com>

goodwe_controller/app/ui_text/en.json

@@ -416,6 +416,9 @@
     "step_in_would": "The batteries would step in above {kw}.",
     "period": "This 15-minute period is heading for {kw}.",
     "period_unmeasured": "Part of this 15-minute period was not measured.",
+    "period_over": "At this rate this 15-minute period reaches {kw}.",
+    "charge_cut": "The grid charge is cut back to stay under {kw}.",
+    "charge_cut_would": "The grid charge would be cut back to stay under {kw}.",
     "prices": {
       "now": "Price now {eur} per kWh, all in.",
       "today": "Today: lowest {lo} at {lo_at}, highest {hi} at {hi_at}.",

goodwe_controller/app/ui_text/nl.json

@@ -351,6 +351,9 @@
     "step_in_would": "De batterijen zouden bijspringen boven {kw}.",
     "period": "Dit kwartier gaat richting {kw}.",
     "period_unmeasured": "Een deel van dit kwartier is niet gemeten.",
+    "period_over": "Aan dit tempo komt dit kwartier op {kw}.",
+    "charge_cut": "Het laden van het net wordt teruggeschroefd om onder {kw} te blijven.",
+    "charge_cut_would": "Het laden van het net zou teruggeschroefd worden om onder {kw} te blijven.",
     "prices": {"now": "Prijs nu {eur} per kWh, alles inbegrepen.", "today": "Vandaag: laagste {lo} om {lo_at}, hoogste {hi} om {hi_at}.", "none": "Geen prijzen voor vandaag."},
     "tomorrow": {"known": "De prijzen van morgen zijn binnen.", "unknown": "De prijzen van morgen komen meestal na 13:00."},
     "region": {"preset": "Heffingen en btw: {region}, cijfers van {year}.", "own": "Heffingen en btw: uw eigen bedrag."},