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/de/dashboard.json

@@ -0,0 +1,30 @@
+{
+  "welcomeBack": "Willkommen zurück",
+  "welcomeBackWithName": "Willkommen zurück, {{name}}!",
+  "subtitle": "Verfolgen Sie die Aktivitäten Ihres Kindes und erhalten Sie KI-gestützte Einblicke",
+  "quickActions": {
+    "title": "Schnellaktionen",
+    "feeding": "Füttern",
+    "sleep": "Schlaf",
+    "diaper": "Windel",
+    "medicine": "Medizin",
+    "activities": "Aktivitäten",
+    "aiAssistant": "KI-Assistent",
+    "navigateTo": "Navigieren zu {{action}}"
+  },
+  "summary": {
+    "title": "Heutige Zusammenfassung",
+    "titleWithChild": "Heutige Zusammenfassung - {{childName}}",
+    "feedings": "Fütterungen",
+    "sleep": "Schlaf",
+    "diapers": "Windeln",
+    "medications": "Medikamente",
+    "noChild": "Fügen Sie ein Kind hinzu, um mit der Verfolgung zu beginnen",
+    "noActivities": "Heute wurden keine Aktivitäten verfolgt"
+  },
+  "predictions": {
+    "title": "Nächste vorhergesagte Aktivität",
+    "napTime": "Mittagsschlaf in {{minutes}} Minuten",
+    "basedOnPatterns": "Basierend auf den Schlafmustern Ihres Kindes"
+  }
+}