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/it/common.json

@@ -0,0 +1,79 @@
+{
+  "appName": "Maternal",
+  "appDescription": "Assistente per la Cura dei Bambini Alimentato da IA",
+  "welcome": "Benvenuto",
+  "loading": "Caricamento...",
+  "save": "Salva",
+  "cancel": "Annulla",
+  "delete": "Elimina",
+  "edit": "Modifica",
+  "add": "Aggiungi",
+  "close": "Chiudi",
+  "confirm": "Conferma",
+  "back": "Indietro",
+  "next": "Avanti",
+  "previous": "Precedente",
+  "finish": "Fine",
+  "search": "Cerca",
+  "filter": "Filtra",
+  "sort": "Ordina",
+  "refresh": "Aggiorna",
+  "retry": "Riprova",
+  "continue": "Continua",
+  "submit": "Invia",
+  "reset": "Reimposta",
+  "clear": "Cancella",
+  "yes": "Sì",
+  "no": "No",
+  "ok": "OK",
+  "error": "Errore",
+  "success": "Successo",
+  "warning": "Avviso",
+  "info": "Informazione",
+  "home": "Home",
+  "settings": "Impostazioni",
+  "profile": "Profilo",
+  "logout": "Esci",
+  "login": "Accedi",
+  "signup": "Registrati",
+  "email": "Email",
+  "password": "Password",
+  "name": "Nome",
+  "date": "Data",
+  "time": "Ora",
+  "duration": "Durata",
+  "notes": "Note",
+  "optional": "Opzionale",
+  "required": "Richiesto",
+  "units": {
+    "metric": "Metrico",
+    "imperial": "Imperiale"
+  },
+  "measurements": {
+    "weight": "Peso",
+    "height": "Altezza",
+    "temperature": "Temperatura",
+    "volume": "Volume"
+  },
+  "navigation": {
+    "home": "Home",
+    "dashboard": "Dashboard",
+    "tracking": "Tracciamento",
+    "trackActivity": "Traccia Attività",
+    "track": "Traccia",
+    "ai": "Assistente IA",
+    "aiChat": "Chat IA",
+    "family": "Famiglia",
+    "insights": "Approfondimenti",
+    "children": "Bambini",
+    "settings": "Impostazioni",
+    "logout": "Esci"
+  },
+  "connection": {
+    "syncActive": "Sincronizzazione in tempo reale attiva",
+    "syncDisconnected": "Sincronizzazione in tempo reale disconnessa",
+    "live": "Dal Vivo",
+    "offline": "Offline",
+    "familyMembersOnline": "{{count}} membri della famiglia online"
+  }
+}