refactor(alert-settings): integrate AppShell layout and update cache version

- Replace custom page layout with AppShell component for consistent UI
- Remove unused PageHeader and UpdateAlertConditionDto imports
- Update service worker cache names and version.json to new timestamp

public/sw.js

@@ -1,5 +1,5 @@
-const CACHE_NAME = 'greenhome-1766182760520';
-const STATIC_CACHE_NAME = 'greenhome-static-1766182760520';
+const CACHE_NAME = 'greenhome-1778524870692';
+const STATIC_CACHE_NAME = 'greenhome-static-1778524870692';
 
 // Static assets to cache on install
 const STATIC_FILES_TO_CACHE = [

public/version.json

@@ -1,3 +1,3 @@
 {
-  "version": "1766182760520"
+  "version": "1778524870692"
 }