Merge master (0.19.2, f1c9733) into sync-0.19: TARIFF-24 and SAFETY-125 reach release/1.0

Brings in 0.19.1 (TARIFF-24) and 0.19.2 (SAFETY-125). Git merged every file
without a text conflict. config.yaml's version becomes 0.19.2, the newest
CHANGELOG section: test_version_gate.py (PKG-14, 11b) requires the two to be
equal, and release/1.0 took 0.19.0 the same way (#207). The 0.19.1 and 0.19.2
CHANGELOG sections come in as history.

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

goodwe_controller/DOCS.md

@@ -538,7 +538,7 @@ With battery modes on, these choices replace the *Charging and selling on price*
 
 **Cheap and expensive hours.** They come from the published day-ahead prices, as runs of consecutive 15-minute periods, not a single period.
 - The cheap run is the cheapest stretch long enough to fill the batteries that may charge, at their power.
-- An expensive hour costs at least *Battery cycle cost* (`cycle_cost_threshold_eur`, widened as for trading) more than the cheap run. The batteries hold their power until then.
+- An expensive hour costs more than the cheap run by at least *Battery cycle cost* (`cycle_cost_threshold_eur`) when a solar forecast is read, and by 1.5 times that when none is (a real-time price feed widens it further). The batteries hold their power until then.
 - The sale uses the most expensive stretch inside those hours, and never a period below 0.
 - A carried (not yet published) price is never used. A run that has started runs to its end.
 - With no prices, or too small a gap, every battery follows the house.
@@ -1710,7 +1710,9 @@ DECISIONS/MAINT-13-full-pack-is-complete.md.
 On a capacity-tariff site the maintenance charge is capped by the headroom left
 under `peak_cap_w`, and if the forecast goes over the cap the charge-only clamp
 is dropped so the battery can shave the peak instead. Money outranks the
-maintenance schedule.
+maintenance schedule. With one battery or several, the charge also stays
+within the room left in the 15-minute period, so a late meter reading does
+not let it run at full power.
 
 With two or more batteries, the one being emptied gives its drain rate and the
 others only add power when the house needs more; none charges while it drains
@@ -3614,7 +3616,7 @@ for a new install*.
 | Meter reading may be stuck | See *Meter reading may be stuck* under Notifications. |
 | Month peak | This month's highest 15-minute average, when it happened, and how close it is to your peak limit. Amber from 80 %. |
 | 15-minute periods measured this month | How many 15-minute periods the add-on has measured and saved this month. |
-| Peak guard, Load too high for battery, Battery at its peak reserve | What the add-on does to keep your peak down. *Idle, heading for …* is where this 15-minute period is heading. *Waiting for meter readings* after a restart means the battery does not charge until the add-on can measure the period again. A red peak row is an alarm while control keeps running, so the banner shows its title without *Not ready*. |
+| Peak guard, Load too high for battery, Battery at its peak reserve | What the add-on does to keep your peak down. *Idle, heading for …* is where this 15-minute period is heading. *At this rate … over …* means it would go over at the current rate. With *grid charge limited*, a charge from the grid is cut back so it does not. *Waiting for meter readings* after a restart means the battery does not charge until the add-on can measure the period again. A red peak row is an alarm while control keeps running, so the banner shows its title without *Not ready*. |
 | Battery level, Battery power, Grid power | The reading of that entity. *No usable reading* means the entity is missing, or its reading is too old. Check it in Developer Tools before replacing it. |
 | Inverter control | Whether the inverter can be controlled, and how much it can charge and give. |
 | *name*: battery power reading stopped changing | The reading did not change while the add-on asked for a change. It may be stuck, or the battery may be refusing. The add-on sets the inverters to 0 W until it changes. |