fix(i18n): translate hardcoded strings in JourneyDetailPage and fix ellipsis in all languages

- Replace all remaining hardcoded strings in JourneyDetailPage JourneySettingsDialog with t() calls
- Add 14 missing translation keys to all 13 non-English language files
  (trips.member*, common.expand/collapse, inspector.remove, memories.*, journey.*)
- Fix common.loading and common.saving to use Unicode ellipsis (…) instead of three dots (...)
- Update 4 test files that expected three-dot ellipsis to use Unicode ellipsis
- All 2541 tests passing

client/src/components/Planner/PlaceInspector.tsx

@@ -601,7 +601,7 @@ export default function PlaceInspector({
           {selectedDayId && (
             assignmentInDay ? (
               <ActionButton onClick={() => onRemoveAssignment(selectedDayId, assignmentInDay.id)} variant="ghost" icon={<Minus size={13} />}
-                label={<><span className="hidden sm:inline">{t('inspector.removeFromDay')}</span><span className="sm:hidden">Remove</span></>} />
+                label={<><span className="hidden sm:inline">{t('inspector.removeFromDay')}</span><span className="sm:hidden">{t('inspector.remove')}</span></>} />
             ) : (
               <ActionButton onClick={() => onAssignToDay(place.id)} variant="primary" icon={<Plus size={13} />} label={t('inspector.addToDay')} />
             )