feat(settings): add dedicated Sync tab with CardDAV contacts integration

- Rename Calendar tab to Synchronization with two sections:
  * Calendar Sync (Google, Apple, CalDAV, ICS)
  * Contact Sync (CardDAV) - NEW
- Add visual tab grouping with CSS separators between sections
- Implement CardDAV account management UI:
  * Add/delete accounts
  * Enable/disable addressbooks
  * Manual sync trigger
  * Connection testing
- Add UX improvements:
  * Status badges (success/error/syncing)
  * Empty states with onboarding
  * Inline help tooltips (prepared)
  * Breadcrumb navigation (prepared)
- Update i18n keys in all 14 locales
- All 109 tests passing

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

public/locales/ar.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "تمت استعادة قاعدة البيانات. جارٍ إعادة التحميل...",
     "backupCliTitle": "استعادة CLI / Docker Compose",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "يمكنك أيضًا إنشاء نسخة مباشرة عبر Docker Compose:"
+    "backupCliBackupHint": "يمكنك أيضًا إنشاء نسخة مباشرة عبر Docker Compose:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "تخطيط عائلي. آمن. يحترم الخصوصية. مفتوح المصدر.",
@@ -1191,4 +1216,4 @@
     "new": "إنشاء إدخال جديد",
     "search": "فتح البحث"
   }
-}
+}

public/locales/de.json

@@ -758,14 +758,26 @@
   },
   "settings": {
     "title": "Einstellungen",
+    "navigationLabel": "Einstellungsnavigation",
+    "breadcrumbLabel": "Pfad",
+    "sectionPersonal": "Persönlich",
+    "sectionModulesNav": "Module",
+    "sectionSync": "Synchronisation",
+    "sectionAdmin": "Administration",
     "tabGeneral": "Allgemein",
     "tabMeals": "Mahlzeiten",
     "tabBudget": "Budget",
     "tabShopping": "Einkauf",
     "tabCalendar": "Kalender",
-    "tabFamily": "Familienverwaltung",
+    "tabSync": "Synchronisation",
+    "tabSyncCalendar": "Kalender",
+    "tabSyncContacts": "Kontakte",
+    "sectionContactSync": "Kontakt-Synchronisation",
+    "cardavTitle": "CardDAV Kontakte",
+    "tabFamily": "Familie",
     "tabApiTokens": "API-Tokens",
     "tabAccount": "Konto",
+    "tabBackup": "Backup",
     "tabsAriaLabel": "Einstellungsbereiche",
     "sectionDesign": "Design",
     "sectionAppName": "Anwendungsname",
@@ -1015,7 +1027,39 @@
     "calendarDisabled": "Kalender deaktiviert",
     "calendarsRefreshed": "Kalender aktualisiert",
     "deleteAccountConfirm": "CalDAV-Konto wirklich löschen? Alle synchronisierten Kalender werden entfernt.",
-    "lastSync": "Zuletzt synchronisiert"
+    "lastSync": "Zuletzt synchronisiert",
+    "cardavTitle": "CardDAV Kontakte",
+    "cardavDescription": "Verbinde mehrere CardDAV-Konten (iCloud, Nextcloud, Radicale, etc.) und synchronisiere deine Kontakte.",
+    "cardavAddAccount": "CardDAV-Konto hinzufügen",
+    "cardavEmptyState": "Noch keine CardDAV-Konten verbunden. Füge dein erstes Konto hinzu, um Kontakte zu synchronisieren.",
+    "cardavNameLabel": "Kontoname",
+    "cardavNamePlaceholder": "z.B. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server-URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "Die Basis-URL deines CardDAV-Servers",
+    "cardavUsernameLabel": "Benutzername",
+    "cardavPasswordLabel": "Passwort",
+    "cardavPasswordHint": "Für iCloud: App-spezifisches Passwort von appleid.apple.com verwenden",
+    "cardavAccountAdded": "CardDAV-Konto erfolgreich hinzugefügt",
+    "cardavAccountDeleted": "CardDAV-Konto entfernt",
+    "cardavSyncSuccess": "CardDAV-Synchronisation erfolgreich",
+    "cardavSyncFailed": "CardDAV-Synchronisation fehlgeschlagen",
+    "cardavConnectionFailed": "Verbindung zum CardDAV-Server fehlgeschlagen",
+    "cardavAddressbooksToggle": "Adressbücher anzeigen/ausblenden",
+    "cardavRefreshAddressbooks": "Adressbücher aktualisieren",
+    "addressbookEnabled": "Adressbuch aktiviert",
+    "addressbookDisabled": "Adressbuch deaktiviert",
+    "addressbooksRefreshed": "Adressbücher aktualisiert",
+    "deleteCardDAVAccountConfirm": "CardDAV-Konto wirklich löschen? Alle synchronisierten Kontakte bleiben erhalten, verlieren aber die CardDAV-Verknüpfung.",
+    "statusSynced": "Synchronisiert",
+    "statusError": "Fehler",
+    "statusSyncing": "Synchronisiert…",
+    "statusNeverSynced": "Noch nie synchronisiert",
+    "syncedAgo": "vor {{time}}",
+    "helpTooltipCalDAV": "CalDAV ermöglicht die Synchronisation von Kalendern mit iCloud, Nextcloud und anderen CalDAV-Servern.",
+    "helpTooltipCardDAV": "CardDAV ermöglicht die Synchronisation von Kontakten mit iCloud, Nextcloud und anderen CardDAV-Servern.",
+    "emptyStateAddFirst": "Füge dein erstes Konto hinzu",
+    "emptyStateNoAccounts": "Noch keine Konten verbunden"
   },
   "login": {
     "tagline": "Familienplanung. Sicher. Datenschutzfreundlich. Open Source.",

public/locales/el.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "Η βάση επαναφέρθηκε. Επαναφόρτωση...",
     "backupCliTitle": "Επαναφορά CLI / Docker Compose",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "Μπορείτε επίσης να δημιουργήσετε αντίγραφο απευθείας με Docker Compose:"
+    "backupCliBackupHint": "Μπορείτε επίσης να δημιουργήσετε αντίγραφο απευθείας με Docker Compose:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Οικογενειακός προγραμματισμός. Ασφαλής. Φιλικός προς την ιδιωτικότητα. Ανοιχτός κώδικας.",
@@ -1191,4 +1216,4 @@
     "new": "Δημιουργία νέας εγγραφής",
     "search": "Άνοιγμα αναζήτησης"
   }
-}
+}

public/locales/en.json

@@ -760,7 +760,9 @@
     "tabFamily": "Family Management",
     "tabApiTokens": "API Tokens",
     "tabAccount": "Account",
+    "tabSync": "Synchronization",
     "tabsAriaLabel": "Settings sections",
+    "sectionContactSync": "Contact Synchronization",
     "sectionDesign": "Appearance",
     "sectionAppName": "Application name",
     "sectionModules": "Modules",
@@ -1009,7 +1011,30 @@
     "calendarDisabled": "Calendar disabled",
     "calendarsRefreshed": "Calendars refreshed",
     "deleteAccountConfirm": "Really delete CalDAV account? All synced calendars will be removed.",
-    "lastSync": "Last synced"
+    "lastSync": "Last synced",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Family planning. Secure. Privacy-friendly. Open source.",

public/locales/es.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "Base de datos restaurada. Recargando...",
     "backupCliTitle": "Restauración por CLI / Docker Compose",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "También puedes crear una copia directamente con Docker Compose:"
+    "backupCliBackupHint": "También puedes crear una copia directamente con Docker Compose:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Planificación familiar. Segura. Privada. Código abierto.",
@@ -1191,4 +1216,4 @@
     "new": "Crear nueva entrada",
     "search": "Abrir búsqueda"
   }
-}
+}

public/locales/fr.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "Base restaurée. Rechargement...",
     "backupCliTitle": "Restauration CLI / Docker Compose",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "Tu peux aussi créer une sauvegarde directement avec Docker Compose :"
+    "backupCliBackupHint": "Tu peux aussi créer une sauvegarde directement avec Docker Compose :",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Planification familiale. Sécurisée. Respectueuse de la vie privée. Open source.",
@@ -1191,4 +1216,4 @@
     "new": "Créer une nouvelle entrée",
     "search": "Ouvrir la recherche"
   }
-}
+}

public/locales/hi.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "डेटाबेस पुनर्स्थापित हुआ। फिर से लोड हो रहा है...",
     "backupCliTitle": "CLI / Docker Compose पुनर्स्थापना",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "आप Docker Compose से सीधे बैकअप भी बना सकते हैं:"
+    "backupCliBackupHint": "आप Docker Compose से सीधे बैकअप भी बना सकते हैं:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "पारिवारिक योजना। सुरक्षित। गोपनीयता-अनुकूल। ओपन सोर्स।",
@@ -1191,4 +1216,4 @@
     "new": "नई प्रविष्टि बनाएं",
     "search": "खोज खोलें"
   }
-}
+}

public/locales/it.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "Database ripristinato. Ricaricamento...",
     "backupCliTitle": "Ripristino CLI / Docker Compose",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "Puoi anche creare un backup direttamente con Docker Compose:"
+    "backupCliBackupHint": "Puoi anche creare un backup direttamente con Docker Compose:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Pianificazione familiare. Sicura. Rispettosa della privacy. Open source.",
@@ -1191,4 +1216,4 @@
     "new": "Crea nuova voce",
     "search": "Apri ricerca"
   }
-}
+}

public/locales/ja.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "データベースを復元しました。再読み込み中...",
     "backupCliTitle": "CLI / Docker Compose 復元",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "Docker Compose から直接バックアップを作成することもできます:"
+    "backupCliBackupHint": "Docker Compose から直接バックアップを作成することもできます:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "家族計画。安全。プライバシー重視。オープンソース。",
@@ -1191,4 +1216,4 @@
     "new": "新規エントリを作成",
     "search": "検索を開く"
   }
-}
+}

public/locales/pt.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "Banco de dados restaurado. Recarregando...",
     "backupCliTitle": "Restauração via CLI / Docker Compose",
     "backupCliHint": "Para restaurações operacionais, pare a aplicação, monte o backup em um container temporário e substitua o arquivo do banco de dados.",
-    "backupCliBackupHint": "Você também pode criar um backup diretamente pelo Docker Compose:"
+    "backupCliBackupHint": "Você também pode criar um backup diretamente pelo Docker Compose:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Planejamento familiar. Seguro. Privado. Código aberto.",
@@ -1191,4 +1216,4 @@
     "new": "Criar nova entrada",
     "search": "Abrir pesquisa"
   }
-}
+}

public/locales/ru.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "База данных восстановлена. Перезагрузка...",
     "backupCliTitle": "Восстановление CLI / Docker Compose",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "Также можно создать копию напрямую через Docker Compose:"
+    "backupCliBackupHint": "Также можно создать копию напрямую через Docker Compose:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Семейное планирование. Безопасно. С уважением к приватности. Открытый исходный код.",
@@ -1191,4 +1216,4 @@
     "new": "Создать новую запись",
     "search": "Открыть поиск"
   }
-}
+}

public/locales/sv.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "Databasen återställd. Laddar om...",
     "backupCliTitle": "CLI / Docker Compose-återställning",
     "backupCliHint": "För driftåterställningar, stoppa appen, montera säkerhetskopian i en tillfällig container och byt ut databasfilen.",
-    "backupCliBackupHint": "Du kan också skapa en backup direkt med Docker Compose:"
+    "backupCliBackupHint": "Du kan också skapa en backup direkt med Docker Compose:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Familjeplanering. Säker. Sekretessvänlig. Öppen källkod.",
@@ -1191,4 +1216,4 @@
     "goShop": "Inköpslista",
     "goNotes": "Anteckningar"
   }
-}
+}

public/locales/tr.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "Veritabanı geri yüklendi. Yeniden yükleniyor...",
     "backupCliTitle": "CLI / Docker Compose geri yükleme",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "Docker Compose ile doğrudan yedek de oluşturabilirsiniz:"
+    "backupCliBackupHint": "Docker Compose ile doğrudan yedek de oluşturabilirsiniz:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Aile planlaması. Güvenli. Gizlilik dostu. Açık kaynak.",
@@ -1191,4 +1216,4 @@
     "new": "Yeni giriş oluştur",
     "search": "Aramayı aç"
   }
-}
+}

public/locales/uk.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "Базу даних відновлено. Перезавантаження...",
     "backupCliTitle": "Відновлення CLI / Docker Compose",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "Також можна створити копію безпосередньо через Docker Compose:"
+    "backupCliBackupHint": "Також можна створити копію безпосередньо через Docker Compose:",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "Планування для родини. Безпечно. Конфіденційно. Відкритий код.",
@@ -1191,4 +1216,4 @@
     "new": "Створити новий запис",
     "search": "Відкрити пошук"
   }
-}
+}

public/locales/zh.json

@@ -952,7 +952,32 @@
     "backupRestoredToast": "数据库已恢复。正在重新加载...",
     "backupCliTitle": "CLI / Docker Compose 恢复",
     "backupCliHint": "For operational restores, stop the app, mount the backup in a temporary container and replace the database file.",
-    "backupCliBackupHint": "也可以直接通过 Docker Compose 创建备份："
+    "backupCliBackupHint": "也可以直接通过 Docker Compose 创建备份：",
+    "tabSync": "Synchronization",
+    "sectionContactSync": "Contact Synchronization",
+    "cardavTitle": "CardDAV Contacts",
+    "cardavDescription": "Connect multiple CardDAV accounts (iCloud, Nextcloud, Radicale, etc.) and sync your contacts.",
+    "cardavAddAccount": "Add CardDAV Account",
+    "cardavEmptyState": "No CardDAV accounts connected yet. Add your first account to sync contacts.",
+    "cardavNameLabel": "Account name",
+    "cardavNamePlaceholder": "e.g. iCloud, Nextcloud",
+    "cardavUrlLabel": "CardDAV Server URL",
+    "cardavUrlPlaceholder": "https://contacts.icloud.com",
+    "cardavUrlHint": "The base URL of your CardDAV server",
+    "cardavUsernameLabel": "Username",
+    "cardavPasswordLabel": "Password",
+    "cardavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "cardavAccountAdded": "CardDAV account added successfully",
+    "cardavAccountDeleted": "CardDAV account removed",
+    "cardavSyncSuccess": "CardDAV sync successful",
+    "cardavSyncFailed": "CardDAV sync failed",
+    "cardavConnectionFailed": "Connection to CardDAV server failed",
+    "cardavAddressbooksToggle": "Show/hide addressbooks",
+    "cardavRefreshAddressbooks": "Refresh addressbooks",
+    "addressbookEnabled": "Addressbook enabled",
+    "addressbookDisabled": "Addressbook disabled",
+    "addressbooksRefreshed": "Addressbooks refreshed",
+    "deleteCardDAVAccountConfirm": "Really delete CardDAV account? All synced contacts will remain but lose their CardDAV link."
   },
   "login": {
     "tagline": "家庭规划。安全。注重隐私。开源。",
@@ -1191,4 +1216,4 @@
     "new": "创建新条目",
     "search": "打开搜索"
   }
-}
+}