fix(storefront-i18n): dashboard widgets translate + correct customer-module key paths

Two bugs from Test 5.1 on FR storefront dashboard:

1. Loyalty + Orders dashboard cards (`StorefrontDashboardCard.title`/
   `subtitle`/`value_label`) were hardcoded English. Added `language`
   to `WidgetContext`; customer dashboard route passes
   `request.state.language` through; loyalty and orders widget
   providers now call `translate(..., context.language)` with new
   `widget.*` i18n keys × 4 locales each.

2. Customer-module locale JSON has redundant top-level `customers`
   wrapper, so after the module-locale loader auto-namespaces under
   module code `customers`, the actual key path is
   `customers.customers.customer_number` (matches the existing
   `loyalty.loyalty.wallet.apple` pattern). My earlier sweep used the
   single-prefix path for 8 references — fixed all to double-prefix.

Both bugs were visible end-of-day yesterday after the api container
recreate landed `1bade6e6`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/modules/orders/locales/de.json

@@ -1,4 +1,11 @@
 {
+    "widget": {
+        "summary": {
+            "title": "Bestellungen",
+            "subtitle": "Bestellverlauf anzeigen",
+            "value_label": "Bestellungen gesamt"
+        }
+    },
     "orders": {
         "title": "Bestellungen",
         "order": "Bestellung",

app/modules/orders/locales/en.json

@@ -1,4 +1,11 @@
 {
+    "widget": {
+        "summary": {
+            "title": "Orders",
+            "subtitle": "View order history",
+            "value_label": "Total Orders"
+        }
+    },
     "orders": {
         "title": "Orders",
         "order": "Order",

app/modules/orders/locales/fr.json

@@ -1,4 +1,11 @@
 {
+    "widget": {
+        "summary": {
+            "title": "Commandes",
+            "subtitle": "Voir l'historique des commandes",
+            "value_label": "Total des commandes"
+        }
+    },
     "orders": {
         "title": "Commandes",
         "order": "Commande",

app/modules/orders/locales/lb.json

@@ -1,4 +1,11 @@
 {
+    "widget": {
+        "summary": {
+            "title": "Bestellungen",
+            "subtitle": "Bestellhistorik kucken",
+            "value_label": "Bestellunge gesamt"
+        }
+    },
     "orders": {
         "title": "Bestellungen",
         "order": "Bestellung",

app/modules/orders/services/order_widgets.py

@@ -51,6 +51,7 @@ class OrderWidgetProvider:
     ) -> list[StorefrontDashboardCard]:
         """Provide the Orders card for the customer dashboard."""
         from app.modules.orders.models.customer_order_stats import CustomerOrderStats
+        from app.utils.i18n import translate
 
         stats = (
             db.query(CustomerOrderStats)
@@ -62,16 +63,17 @@ class OrderWidgetProvider:
         )
 
         total_orders = stats.total_orders if stats else 0
+        lang = context.language if context else None
 
         return [
             StorefrontDashboardCard(
                 key="orders.summary",
                 icon="shopping-bag",
-                title="Orders",
-                subtitle="View order history",
+                title=translate("orders.widget.summary.title", lang),
+                subtitle=translate("orders.widget.summary.subtitle", lang),
                 route="account/orders",
                 value=total_orders,
-                value_label="Total Orders",
+                value_label=translate("orders.widget.summary.value_label", lang),
                 order=10,
             ),
         ]