更新 Tailwind CSS 配置，添加重要性设置；在 Vite 配置中添加 PostCSS 插件；优化多个组件的 VCard 结构，移除多余的 class 属性以提升代码整洁性。

src/components/dialog/PluginConfigDialog.vue

@@ -150,11 +150,7 @@ onBeforeMount(async () => {
 <template>
   <VDialog scrollable max-width="60rem" :fullscreen="!display.mdAndUp.value">
     <!-- Vuetify 渲染模式 -->
-    <VCard
-      v-if="renderMode === 'vuetify'"
-      :title="`${props.plugin?.plugin_name} - ${t('dialog.pluginConfig.title')}`"
-      class="rounded-t"
-    >
+    <VCard v-if="renderMode === 'vuetify'" :title="`${props.plugin?.plugin_name} - ${t('dialog.pluginConfig.title')}`">
       <VDialogCloseBtn @click="emit('close')" />
       <VDivider />
       <LoadingBanner v-if="!isRefreshed" class="mt-5" />