feat: add admin file preview downloads

src/i18n/locales/en-US.ts

@@ -408,6 +408,16 @@ export default {
     copySuccess: 'Text copied to clipboard',
     copyFailed: 'Copy failed, please try again',
     charCount: '{count} characters',
+    downloadFile: 'Download File',
+    exportText: 'Export Text',
+    downloadSuccess: 'Downloaded: {name}',
+    exportSuccess: 'Exported: {name}',
+    downloadFailed: 'Download failed',
+    previewFailed: 'Failed to load preview',
+    loadingPreview: 'Loading preview...',
+    previewComplete: 'Loaded full content, {count} characters',
+    previewTruncated: 'Showing {shown} / {total} characters',
+    previewFallback: 'Preview endpoint unavailable; using text from the list',
     headers: {
       code: 'Retrieve Code',
       name: 'Name',

src/i18n/locales/zh-CN.ts

@@ -406,6 +406,16 @@ export default {
     copySuccess: '文本已复制到剪贴板',
     copyFailed: '复制失败，请重试',
     charCount: '共 {count} 个字符',
+    downloadFile: '下载文件',
+    exportText: '导出文本',
+    downloadSuccess: '已下载：{name}',
+    exportSuccess: '已导出：{name}',
+    downloadFailed: '下载失败',
+    previewFailed: '预览加载失败',
+    loadingPreview: '正在加载预览...',
+    previewComplete: '已加载完整内容，共 {count} 个字符',
+    previewTruncated: '已显示 {shown} / {total} 个字符',
+    previewFallback: '预览接口不可用，已使用列表中的文本内容',
     headers: {
       code: '取件码',
       name: '名称',