Refactor environment variable declarations, update client entry points, and optimize asset handling in SvelteKit project for improved performance and maintainability.

.svelte-kit/output/server/nodes/3.js

@@ -0,0 +1,8 @@
+import * as server from '../entries/pages/logout/_page.server.ts.js';
+
+export const index = 3;
+export { server };
+export const server_id = "src/routes/logout/+page.server.ts";
+export const imports = [];
+export const stylesheets = [];
+export const fonts = [];