fix: 修复添加授权页面导入路径错误

- 将 `lucide-vite-next` 修正为 `lucide-vue-next`
- 移除未使用的 X 图标导入

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

frontend/src/pages/admin/agent-apps/create.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { Eye, Info, Loader2, Plus, Trash2, X } from 'lucide-vite-next'
+import { Eye, Info, Loader2, Plus, Trash2 } from 'lucide-vue-next'
 import { computed, onMounted, ref } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useRouter } from 'vue-router'