Add endpoint mode options, release channel rollback handling, and runtime refresh improvements

- Implement `endpoint_mode` (manual/auto) and related configuration in i18n across multiple locales.
- Add new utility methods for channel rollback and runtime confirmation workflows.
- Update unit and E2E tests to cover runtime refresh behavior, channel switching mechanics, and release references.
- Enhance `SessionUser` and related services to improve error handling during release runtime refresh.
- Add data-test attributes for frontend components to support improved test coverage.

src/components/displays/department/pos/steps/PosDepartmentStep1.vue

@@ -660,7 +660,9 @@ const handleDesktopLastWashCopy = async (payload = {}) => {
       return;
     }
 
-    const didCopy = await copyLastWashItemsToCurrentOrder(payload?.items || []);
+    const didCopy = await copyLastWashItemsToCurrentOrder(payload?.items || [], {
+      sourceReference: payload?.order?.reference,
+    });
     if (!didCopy) {
       return;
     }

src/components/displays/department/pos/steps/elements/PosDesktopLastWashCard.vue

@@ -190,7 +190,7 @@ watch(normalizedOrderId, (nextOrderId, previousOrderId) => {
         </div>
       </dl>
 
-      <section class="pos-step-one-insight-card__section">
+      <section class="pos-step-one-insight-card__section" data-testid="pos-desktop-last-wash-section">
         <div class="pos-step-one-insight-card__section-header">
           <h4 class="pos-step-one-insight-card__section-title">Indhold</h4>
         </div>

src/components/displays/department/pos/steps/elements/PosDesktopVehicleSummaryCard.vue

@@ -248,7 +248,7 @@ const hasVehicleSummaryRows = computed(() => vehicleSummaryRows.value.length > 0
       </div>
     </dl>
 
-    <section class="pos-step-one-insight-card__section">
+    <section class="pos-step-one-insight-card__section" data-testid="pos-desktop-vehicle-summary-section">
       <div class="pos-step-one-insight-card__section-header">
         <h4 class="pos-step-one-insight-card__section-title">Ydelse og tilvalg</h4>
       </div>