feat: Complete Spanish, French, Portuguese, Chinese localization and add German/Italian support

- Updated all Spanish (es) translation files with comprehensive translations for tracking, AI, family, insights, children, and settings pages
- Updated French (fr), Portuguese (pt), and Chinese (zh) translations to match English structure
- Added German (de) and Italian (it) language support with complete translation files
- Fixed medicine tracker route from /track/medication to /track/medicine
- Updated i18n config to support 7 languages: en, es, fr, pt, zh, de, it
- All tracking pages now fully localized: sleep, feeding, diaper, medicine, activity
- AI assistant interface fully translated with thinking messages and suggested questions
- Family management and insights pages now support all languages

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

maternal-web/locales/fr/children.json

@@ -13,8 +13,29 @@
     "female": "Féminin",
     "other": "Autre"
   },
+  "dialog": {
+    "name": "Nom",
+    "birthDate": "Date de Naissance",
+    "gender": "Genre",
+    "photoUrl": "URL de Photo (Optionnel)",
+    "photoPlaceholder": "https://example.com/photo.jpg",
+    "cancel": "Annuler",
+    "add": "Ajouter",
+    "update": "Mettre à Jour",
+    "saving": "Enregistrement...",
+    "delete": "Supprimer",
+    "deleting": "Suppression...",
+    "confirmDelete": "Confirmer la Suppression",
+    "confirmDeleteMessage": "Êtes-vous sûr de vouloir supprimer",
+    "confirmDeleteWarning": "Cette action ne peut pas être annulée. Toutes les données associées seront supprimées définitivement.",
+    "validation": {
+      "nameRequired": "Veuillez entrer un nom",
+      "birthDateRequired": "Veuillez sélectionner une date de naissance",
+      "birthDateFuture": "La date de naissance ne peut pas être dans le futur"
+    }
+  },
   "errors": {
-    "noFamily": "Aucune famille trouvée. Veuillez d'abord terminer l'intégration.",
+    "noFamily": "Aucune famille trouvée. Veuillez d'abord terminer la configuration initiale.",
     "loadFailed": "Échec du chargement des enfants",
     "saveFailed": "Échec de l'enregistrement de l'enfant",
     "deleteFailed": "Échec de la suppression de l'enfant",
@@ -26,4 +47,4 @@
     "month": "mois",
     "months": "mois"
   }
-}
+}