MAINT-10: maintenance start hour in local time, default 19:00

The start hour was compared with the UTC hour, so the shipped 10 started at
12:00 in a Belgian summer. It is now read in Home Assistant's time zone
(fallback: the container's TZ, then UTC, one log line says which), and the
default moves to 19. DST: a missing hour starts at the first hour after the
jump; a repeated hour starts only in its first pass. Stored options are not
rewritten: a saved 10 now means 10:00 local (DOCS, CHANGELOG).

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

goodwe_controller/translations/en.yaml

@@ -215,8 +215,8 @@ configuration:
     name: "Maintenance · Minimum days between cycles"
     description: "The shortest gap between two maintenance cycles."
   maintenance_start_hour:
-    name: "Maintenance · Start hour"
-    description: "The local hour, 0 to 23, at which a due cycle starts."
+    name: "Maintenance · Start hour (local time)"
+    description: "The hour on your local clock, 0 to 23, when a due cycle starts. 19 means 19:00."
   maintenance_discharge_w:
     name: "Maintenance · Draw-down rate (W)"
     description: "How fast the cycle empties the battery. Above “Inverter rating” it is cut back to the rating, and the cycle just takes longer."

goodwe_controller/translations/nl.yaml

@@ -196,8 +196,8 @@ configuration:
     name: "Onderhoud · Minimum dagen tussen cycli"
     description: "De kortste tijd tussen twee onderhoudscycli."
   maintenance_start_hour:
-    name: "Onderhoud · Startuur"
-    description: "Het lokale uur, 0 tot 23, waarop een geplande cyclus begint."
+    name: "Onderhoud · Startuur (lokale tijd)"
+    description: "Het uur op je lokale klok, 0 tot 23, waarop een geplande cyclus begint. 19 is 19:00."
   maintenance_discharge_w:
     name: "Onderhoud · Ontlaadvermogen (W)"
     description: "Hoe snel de cyclus de batterij leegmaakt. Boven het vermogen van de omvormer wordt het daartoe beperkt, en duurt de cyclus gewoon langer."