feat: 优化增量导入交互和文案

src/components/analysis/IncrementalImportModal.vue

@@ -301,7 +301,7 @@ function translateError(error: string): string {
     </template>
 
     <template #footer>
-      <div class="flex justify-end gap-2">
+      <div class="flex w-full justify-end gap-2">
         <!-- 选择阶段 -->
         <template v-if="stage === 'select'">
           <UButton color="neutral" variant="ghost" @click="isOpen = false">

src/i18n/locales/zh-CN/analysis.json

@@ -41,7 +41,7 @@
     "duplicates": "重复消息",
     "noNewMessages": "文件中没有新消息，所有消息都已存在",
     "importing": "正在导入...",
-    "import": "导入 {count} 条消息",
+    "import": "确认导入 {count} 条消息",
     "success": "导入成功",
     "successDetail": "成功追加 {count} 条新消息",
     "failed": "导入失败"