chore: integrate tailwindcss with vite and remove postcss

package.json

@@ -15,9 +15,8 @@
 		"@sveltejs/adapter-static": "^3.0",
 		"@sveltejs/kit": "^2.17",
 		"@sveltejs/vite-plugin-svelte": "^3.1",
-		"@tailwindcss/postcss": "^4.0",
+		"@tailwindcss/vite": "^4.0",
 		"@tauri-apps/cli": "^2.2",
-		"postcss": "^8.5",
 		"svelte": "^4.2",
 		"svelte-check": "^4.1",
 		"tailwindcss": "^4.0",