feat(caldav): add German and English i18n keys

public/locales/en.json

@@ -476,6 +476,9 @@
     "iconMoon": "Night",
     "iconWeather": "Weather",
     "invalidDate": "Use a valid date in the selected date format.",
+    "caldavTargetLabel": "Sync to CalDAV",
+    "caldavTargetLocal": "Store locally only",
+    "caldavTargetHint": "Choose a CalDAV calendar to sync this event.",
     "attachmentLabel": "Attachment",
     "attachmentHint": "Attach a local image, PDF, or document. Images will be shown in the event popup.",
     "attachmentFallback": "Attachment",
@@ -982,7 +985,26 @@
     "backupSchedulerNever": "No backup created yet",
     "backupSchedulerTrigger": "Create backup now",
     "backupSchedulerTriggering": "Creating backup...",
-    "backupSchedulerTriggeredToast": "Backup created successfully."
+    "backupSchedulerTriggeredToast": "Backup created successfully.",
+    "caldavTitle": "CalDAV Calendars",
+    "caldavDescription": "Connect multiple CalDAV accounts (iCloud, Nextcloud, Radicale, Baikal, etc.) and choose which calendars to sync.",
+    "caldavAddAccount": "Add CalDAV Account",
+    "caldavEmptyState": "No CalDAV accounts connected yet. Add your first account to get started.",
+    "caldavNameLabel": "Account Name",
+    "caldavNamePlaceholder": "e.g. My Radicale, iCloud, Nextcloud",
+    "caldavUrlLabel": "CalDAV Server URL",
+    "caldavUrlPlaceholder": "https://caldav.icloud.com",
+    "caldavUrlHint": "The base URL of your CalDAV server",
+    "caldavUsernameLabel": "Username",
+    "caldavPasswordLabel": "Password",
+    "caldavPasswordHint": "For iCloud: Use app-specific password from appleid.apple.com",
+    "caldavAccountAdded": "CalDAV account added successfully",
+    "caldavAccountDeleted": "CalDAV account removed",
+    "caldavCalendarsToggle": "Show/hide calendars",
+    "caldavRefreshCalendars": "Refresh calendars",
+    "caldavSyncSuccess": "CalDAV sync successful",
+    "caldavSyncFailed": "CalDAV sync failed",
+    "caldavConnectionFailed": "Connection to CalDAV server failed"
   },
   "login": {
     "tagline": "Family planning. Secure. Privacy-friendly. Open source.",