Add localization for alarm notification categories

- Add translation keys for alarm categories in ko.json and en.json
- Implement getCategoryLabel function to map category codes to localized labels
- Sort categories to display "etc" category at the end
- Replace hardcoded desc1 values with localized category labels

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

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

src/locales/en.json

@@ -1301,7 +1301,16 @@
         "title": "Notifications",
         "all": "All",
         "retentionNotice": "※ Notifications are kept for 90 days and then deleted.",
-        "goTo": "Go to {{category}}"
+        "goTo": "Go to {{category}}",
+        "categories": {
+            "benefits": "Benefits/Events",
+            "notice": "Notice",
+            "serviceGuide": "Service Guide",
+            "etc": "Others",
+            "settlement": "Settlement",
+            "settlementStatus": "Settlement Status",
+            "settlementLimit": "Settlement Limit"
+        }
     },
     "faceAuth": {
         "title": "Face Authentication"