add demo action

ui/vite.config.ts

@@ -1,35 +0,0 @@
-import tailwindcss from '@tailwindcss/vite';
-import { sveltekit } from '@sveltejs/kit/vite';
-import { defineConfig } from 'vite';
-
-export default defineConfig({
-	plugins: [tailwindcss(), sveltekit()],
-	test: {
-		projects: [
-			{
-				extends: './vite.config.ts',
-				test: {
-					name: 'client',
-					environment: 'browser',
-					browser: {
-						enabled: true,
-						provider: 'playwright',
-						instances: [{ browser: 'chromium' }]
-					},
-					include: ['src/**/*.svelte.{test,spec}.{js,ts}'],
-					exclude: ['src/lib/server/**'],
-					setupFiles: ['./vitest-setup-client.ts']
-				}
-			},
-			{
-				extends: './vite.config.ts',
-				test: {
-					name: 'server',
-					environment: 'node',
-					include: ['src/**/*.{test,spec}.{js,ts}'],
-					exclude: ['src/**/*.svelte.{test,spec}.{js,ts}']
-				}
-			}
-		]
-	}
-});