UX-13 P3 review: truthful peak lines, a clock-proof test, Simple stays default

- The peak limit's Why and plan block need a real power request (floor above
  0 W), not a blind or floor-limited guard. An Off battery gets the peak
  block only while it gives power. Why no longer says every battery gives.
- test_batteries_screen pins the fixture clock: unpinned it failed every
  morning. New checks cover the trade and cycle filters, the blind guard and
  an Off battery that A covers alone.
- Settings keeps only a picked view; a link to Installer is not remembered.
- Browser check: badges, unsaved change across views, locked value.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

goodwe_controller/DOCS.md

@@ -3263,9 +3263,10 @@ 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.
+**Settings** opens on the **Simple** view, or on the view you last picked:
+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