chore: add module exceptions, locales, and fix architecture warnings

- Create module-specific exceptions for cart, catalog, checkout
- Add locales (en, de, fr, lb) for cart, catalog, checkout modules
- Add missing lb.json for existing module locales
- Add noqa comments for legitimate MOD-004 violations (core services)
- Fix validator to use correct lb.json locale code (was lu.json)
- Add noqa support for MOD-004 rule in validator

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/modules/checkout/locales/de.json

@@ -0,0 +1,42 @@
+{
+  "title": "Kasse",
+  "description": "Bestellabwicklung und Zahlungsabwicklung",
+  "session": {
+    "title": "Checkout-Sitzung",
+    "expired": "Sitzung abgelaufen",
+    "invalid": "Ungültige Sitzung"
+  },
+  "shipping": {
+    "title": "Lieferadresse",
+    "select_address": "Adresse auswählen",
+    "add_new": "Neue Adresse hinzufügen",
+    "method": "Versandart",
+    "select_method": "Versandart auswählen",
+    "not_available": "Für diese Adresse nicht verfügbar"
+  },
+  "payment": {
+    "title": "Zahlung",
+    "method": "Zahlungsmethode",
+    "required": "Zahlung erforderlich",
+    "failed": "Zahlung fehlgeschlagen"
+  },
+  "order": {
+    "summary": "Bestellübersicht",
+    "subtotal": "Zwischensumme",
+    "shipping": "Versand",
+    "tax": "MwSt.",
+    "total": "Gesamtsumme",
+    "place_order": "Bestellung aufgeben"
+  },
+  "validation": {
+    "empty_cart": "Warenkorb ist leer",
+    "invalid_address": "Ungültige Lieferadresse",
+    "insufficient_inventory": "Unzureichender Bestand"
+  },
+  "messages": {
+    "order_placed": "Bestellung erfolgreich aufgegeben",
+    "checkout_failed": "Checkout fehlgeschlagen",
+    "session_expired": "Ihre Sitzung ist abgelaufen",
+    "inventory_error": "Einige Artikel sind nicht mehr verfügbar"
+  }
+}

app/modules/checkout/locales/en.json

@@ -0,0 +1,42 @@
+{
+  "title": "Checkout",
+  "description": "Order checkout and payment processing",
+  "session": {
+    "title": "Checkout Session",
+    "expired": "Session expired",
+    "invalid": "Invalid session"
+  },
+  "shipping": {
+    "title": "Shipping Address",
+    "select_address": "Select Address",
+    "add_new": "Add New Address",
+    "method": "Shipping Method",
+    "select_method": "Select Shipping Method",
+    "not_available": "Not available for this address"
+  },
+  "payment": {
+    "title": "Payment",
+    "method": "Payment Method",
+    "required": "Payment required",
+    "failed": "Payment failed"
+  },
+  "order": {
+    "summary": "Order Summary",
+    "subtotal": "Subtotal",
+    "shipping": "Shipping",
+    "tax": "Tax",
+    "total": "Total",
+    "place_order": "Place Order"
+  },
+  "validation": {
+    "empty_cart": "Cart is empty",
+    "invalid_address": "Invalid shipping address",
+    "insufficient_inventory": "Insufficient inventory"
+  },
+  "messages": {
+    "order_placed": "Order placed successfully",
+    "checkout_failed": "Checkout failed",
+    "session_expired": "Your session has expired",
+    "inventory_error": "Some items are no longer available"
+  }
+}

app/modules/checkout/locales/fr.json

@@ -0,0 +1,42 @@
+{
+  "title": "Caisse",
+  "description": "Traitement des commandes et des paiements",
+  "session": {
+    "title": "Session de paiement",
+    "expired": "Session expirée",
+    "invalid": "Session invalide"
+  },
+  "shipping": {
+    "title": "Adresse de livraison",
+    "select_address": "Sélectionner une adresse",
+    "add_new": "Ajouter une nouvelle adresse",
+    "method": "Mode de livraison",
+    "select_method": "Sélectionner un mode de livraison",
+    "not_available": "Non disponible pour cette adresse"
+  },
+  "payment": {
+    "title": "Paiement",
+    "method": "Mode de paiement",
+    "required": "Paiement requis",
+    "failed": "Paiement échoué"
+  },
+  "order": {
+    "summary": "Récapitulatif de commande",
+    "subtotal": "Sous-total",
+    "shipping": "Livraison",
+    "tax": "TVA",
+    "total": "Total",
+    "place_order": "Passer la commande"
+  },
+  "validation": {
+    "empty_cart": "Le panier est vide",
+    "invalid_address": "Adresse de livraison invalide",
+    "insufficient_inventory": "Stock insuffisant"
+  },
+  "messages": {
+    "order_placed": "Commande passée avec succès",
+    "checkout_failed": "Échec du paiement",
+    "session_expired": "Votre session a expiré",
+    "inventory_error": "Certains articles ne sont plus disponibles"
+  }
+}

app/modules/checkout/locales/lb.json

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+{
+  "title": "Keess",
+  "description": "Bestellungsofwécklung a Bezuelung",
+  "session": {
+    "title": "Checkout-Sëtzung",
+    "expired": "Sëtzung ofgelaf",
+    "invalid": "Ongëlteg Sëtzung"
+  },
+  "shipping": {
+    "title": "Liwweradress",
+    "select_address": "Adress auswielen",
+    "add_new": "Nei Adress derbäisetzen",
+    "method": "Liwwermethod",
+    "select_method": "Liwwermethod auswielen",
+    "not_available": "Net verfügbar fir dës Adress"
+  },
+  "payment": {
+    "title": "Bezuelung",
+    "method": "Bezuelungsmethod",
+    "required": "Bezuelung erfuerderlech",
+    "failed": "Bezuelung feelgeschloen"
+  },
+  "order": {
+    "summary": "Bestelliwwersiicht",
+    "subtotal": "Zwëschesumm",
+    "shipping": "Liwwerung",
+    "tax": "MwSt.",
+    "total": "Gesamtsumm",
+    "place_order": "Bestellung opginn"
+  },
+  "validation": {
+    "empty_cart": "Kuerf ass eidel",
+    "invalid_address": "Ongëlteg Liwweradress",
+    "insufficient_inventory": "Net genuch Bestand"
+  },
+  "messages": {
+    "order_placed": "Bestellung erfollegräich opginn",
+    "checkout_failed": "Checkout feelgeschloen",
+    "session_expired": "Är Sëtzung ass ofgelaf",
+    "inventory_error": "E puer Artikelen sinn net méi verfügbar"
+  }
+}