refactor: remove @nuxt/ui integration and update Vite configuration

- Removed @nuxt/ui plugin from main.ts and index.css
- Updated vite.config.ts to replace @nuxt/ui with unplugin-auto-import and unplugin-vue-components for better component auto-importing and resolution

vite.config.ts

@@ -1,13 +1,14 @@
 import path from "node:path";
-import ui from "@nuxt/ui/vite";
 import tailwindcss from "@tailwindcss/vite";
 import legacy from "@vitejs/plugin-legacy";
 import vue from "@vitejs/plugin-vue";
 import jsx from "@vitejs/plugin-vue-jsx";
 import dotenv from "dotenv";
+import autoImport from "unplugin-auto-import/vite";
 import iconsResolver from "unplugin-icons/resolver";
 import icons from "unplugin-icons/vite";
 import { IonicResolver } from "unplugin-vue-components/resolvers";
+import components from "unplugin-vue-components/vite";
 import { defineConfig } from "vite";
 
 const env = dotenv.config({ path: `.env` }).parsed as Record<string, string>;
@@ -24,17 +25,15 @@ export default defineConfig({
       autoInstall: true,
     }),
     tailwindcss(),
-    ui({
-      autoImport: {
-        dirs: ["src/composables", "src/utils", "src/store"],
-        imports: ["vue", "vue-router", "@vueuse/core", "vue-i18n"],
-        resolvers: [IonicResolver()],
-        vueTemplate: true,
-      },
-      components: {
-        directoryAsNamespace: true,
-        resolvers: [IonicResolver(), iconsResolver({ prefix: "i" })],
-      },
+    autoImport({
+      dirs: ["src/composables", "src/utils", "src/store"],
+      imports: ["vue", "vue-router", "@vueuse/core", "vue-i18n"],
+      resolvers: [IonicResolver()],
+      vueTemplate: true,
+    }),
+    components({
+      directoryAsNamespace: true,
+      resolvers: [IonicResolver(), iconsResolver({ prefix: "i" })],
     }),
   ],
   resolve: {