UX-13 P3: Simple view and Batteries screen

- Batteries: one card per battery with On/Off, the mode list (cheap hours
  and selling greyed out until OPT-11 P3), level, and Now / Today / Why
  lines built in homeview.py. Replaces the OPT-11 P1 minimal cards and uses
  the existing pack_use / pack_mode actions and store keys.
- An Off battery the peak limit still needs says so with its figure; no line
  shows 0 W beside moving power (OPT-11 P1 test F2). Today says "Not planned
  yet" until OPT-11 P3/P4.
- Home's plan leaves Off batteries out, except for the peak limit.
- Settings opens on Simple: the layout's simple fields with an applies chip
  and a note, plus the battery switches and modes. Installer is one tap.
- English and Dutch words in app/ui_text; test_batteries_screen.py; browser
  check tools/ux13_browser_check.py (CHECK=1 ux13_screenshots.sh); new and
  changed screenshots only.

No control, allocator, arbiter or command module changed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UBtqPrG1mDLXzTEBnhEkkV

goodwe_controller/DOCS.md

@@ -515,7 +515,7 @@ below.
 
 ### Battery modes (`battery_modes_enabled`)
 
-Off by default. Turn it on, restart the add-on, and the Batteries screen gives each battery two controls. They apply at once, with no restart.
+Off by default. Turn it on, restart the add-on, and the Batteries screen (and Settings, Simple) gives each battery two controls. They apply at once, with no restart.
 
 - **On or off.** Off asks the battery for 0 W and starts no monthly cycle on it. A cycle that is running stops, and the add-on log says so. The peak limit may still use it, but only for what the other batteries cannot cover.
 - **Mode.** *Solar first* charges from spare solar before the other batteries. *Leftover solar* charges from the solar they cannot take. Both cover the house at any hour. Charging from the grid in cheap hours, and selling, come in a later update.
@@ -3245,12 +3245,28 @@ The page is in Dutch when your browser's language is Dutch, and in English
 otherwise. Status lines, alarms and the start checks' messages stay in English.
 
 Screenshots of each screen are in the add-on's repository, under
-`docs/img/ux13/`. The battery-mode screens are not built yet, so there are no
-screenshots of them.
+`docs/img/ux13/`, including the Batteries screen and Settings, Simple.
 
 *For installers: regenerate the screenshots with
 `tools/ux13_screenshots.sh`, which serves the page from test fixtures.*
 
+### The Batteries screen and Settings, Simple
+
+The **Batteries** tab has a card per battery: its level, and three lines.
+**Now** says what it does, **Today** lists the blocks planned for it (price
+trades, the monthly cycle, the peak limit), and **Why** says the reason. With
+battery modes on, each card also has the On/Off switch and the mode list; both
+apply at once. Charging in cheap hours and selling are greyed out until a later
+update, and Today reads "Not planned yet" when nothing is planned for the
+battery.
+
+An Off battery that the peak limit still needs says so, with the power it
+gives: "Off, but gives 0.5 kW for the peak limit."
+
+**Settings** opens on the **Simple** view: the peak limit, the batteries'
+switches and modes, and shadow mode, each marked "Applies right away" or
+"Applies after a restart". **Installer** shows every setting.
+
 ### Setup, for a new install
 
 The **Setup** tab walks an installer through six steps: the meter, the