notification permission fixes, show server urls at bottom, service worker fixes

src/utils/vite-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="vite/client" />
 
 interface ImportMetaEnv {
-  VITE_BASE_URL?: string;
-  VITE_API_BASE_URL?: string;
+  readonly VITE_BASE_URL?: string;
+  readonly VITE_API_BASE_URL?: string;
 }