UX-08 2c review: unit settings anchor to inverters, plainer texts

- messages.setting() for one inverter in the list reads
  “Inverter rating” for inverter-b (inverters.max_w), so the config panel
  files per-unit reasons under `inverters`, where the value is changed.
- The tariff card and plausibility reasons name
  “Distribution, levies and VAT” (price_taxes_eur_kwh) again.
- The wrong-direction reasons say "safety stop", the sign_disagree_w
  option says what it protects, and the roster, price-entity,
  integrator_max_w and capacity_kwh texts read more plainly.
- NL: stuurprint -> stuurmodule, "De piekbeperking".

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

goodwe_controller/test_validate.py

@@ -452,11 +452,11 @@ check("⚠️ A CHARGE RATE THE SMALLEST PACK CANNOT TAKE IS REFUSED, even thoug
       "recalibrated, so its cap could not contradict anything; it is now, and "
       "its cheap-window charge would ask for hi=-3000 against lo=-2000 - the "
       "`lo > hi` contradiction, 0 W, on the pack nobody was watching",
-      len(_p_two) == 1 and why(_p_two, "(max_w) for inverter-b is 2000 W"))
+      len(_p_two) == 1 and why(_p_two, "for inverter-b (inverters.max_w) is 2000 W"))
 check("...and the message names the pack the number came off, not the first "
       "entry - an operator told to lower a number on the wrong device is being "
       "sent to the wrong device by the message that exists to stop that",
-      not why(_p_two, "(max_w) for inverter-a"))
+      not why(_p_two, "for inverter-a (inverters.max_w)"))
 check("...while the same rate against two packs that can both take it starts, "
       "so this is a comparison and not a blanket refusal of rosters",
       [p for p in validate_startup_config(
@@ -1223,7 +1223,7 @@ def _verdict(opts, token):
     ps = [p for p in validate_startup_config(opts, -5000, 5000) if token in p]
     if not ps:
         return (False, None, None)
-    m = re.search(r"\(max_w\) for (\S+) is (\d+) W", ps[0])
+    m = re.search(r"for (\S+) \(inverters\.max_w\) is (\d+) W", ps[0])
     return (True, m.group(1) if m else None, float(m.group(2)) if m else None)