feat: add data import/export bundle

frontend/src/i18n/locales/en.ts

@@ -1188,6 +1188,28 @@ export default {
       refreshInterval30s: '30 seconds',
       autoRefreshCountdown: 'Auto refresh: {seconds}s',
       syncFromCrs: 'Sync from CRS',
+      dataExport: 'Export',
+      dataExportSelected: 'Export Selected',
+      dataExportIncludeProxies: 'Include proxies (unchecked = no proxy linkage on import)',
+      dataImport: 'Import',
+      dataExportConfirmMessage: 'The exported data contains sensitive account and proxy information. Store it securely.',
+      dataExportConfirm: 'Confirm Export',
+      dataExported: 'Data exported successfully',
+      dataExportFailed: 'Failed to export data',
+      dataImportTitle: 'Import Data',
+      dataImportHint: 'Upload the exported JSON file to import accounts and proxies.',
+      dataImportWarning: 'Import will create new accounts/proxies; groups must be bound manually. Ensure no conflicts in the target instance.',
+      dataImportFile: 'Data file',
+      dataImportButton: 'Start Import',
+      dataImporting: 'Importing...',
+      dataImportSelectFile: 'Please select a data file',
+      dataImportParseFailed: 'Failed to parse data file',
+      dataImportFailed: 'Data import failed',
+      dataImportResult: 'Import Result',
+      dataImportResultSummary: 'Proxies created {proxy_created}, reused {proxy_reused}, failed {proxy_failed}; Accounts created {account_created}, failed {account_failed}',
+      dataImportErrors: 'Error Details',
+      dataImportSuccess: 'Import completed: accounts {account_created}, failed {account_failed}',
+      dataImportCompletedWithErrors: 'Import completed with errors: account failed {account_failed}, proxy failed {proxy_failed}',
       syncFromCrsTitle: 'Sync Accounts from CRS',
       syncFromCrsDesc:
         'Sync accounts from claude-relay-service (CRS) into this system (CRS is called server-to-server).',
@@ -1879,6 +1901,11 @@ export default {
       createProxy: 'Create Proxy',
       editProxy: 'Edit Proxy',
       deleteProxy: 'Delete Proxy',
+      dataExport: 'Export',
+      dataExportConfirmMessage: 'The exported data contains sensitive proxy information. Store it securely.',
+      dataExportConfirm: 'Confirm Export',
+      dataExported: 'Data exported successfully',
+      dataExportFailed: 'Failed to export data',
       searchProxies: 'Search proxies...',
       allProtocols: 'All Protocols',
       allStatus: 'All Status',

frontend/src/i18n/locales/zh.ts

@@ -1273,6 +1273,28 @@ export default {
       refreshInterval30s: '30 秒',
       autoRefreshCountdown: '自动刷新：{seconds}s',
       syncFromCrs: '从 CRS 同步',
+      dataExport: '导出',
+      dataExportSelected: '导出选中',
+      dataExportIncludeProxies: '导出代理（取消后导入时不关联代理）',
+      dataImport: '导入',
+      dataExportConfirmMessage: '导出的数据包含账号与代理的敏感信息，请妥善保存。',
+      dataExportConfirm: '确认导出',
+      dataExported: '数据导出成功',
+      dataExportFailed: '数据导出失败',
+      dataImportTitle: '导入数据',
+      dataImportHint: '上传导出的 JSON 文件以批量导入账号与代理。',
+      dataImportWarning: '导入将创建新账号与代理，分组需手工绑定；请确认目标实例已有数据不会冲突。',
+      dataImportFile: '数据文件',
+      dataImportButton: '开始导入',
+      dataImporting: '导入中...',
+      dataImportSelectFile: '请选择数据文件',
+      dataImportParseFailed: '数据解析失败',
+      dataImportFailed: '数据导入失败',
+      dataImportResult: '导入结果',
+      dataImportResultSummary: '代理创建 {proxy_created}，复用 {proxy_reused}，失败 {proxy_failed}；账号创建 {account_created}，失败 {account_failed}',
+      dataImportErrors: '失败详情',
+      dataImportSuccess: '导入完成：账号 {account_created}，失败 {account_failed}',
+      dataImportCompletedWithErrors: '导入完成但有错误：账号失败 {account_failed}，代理失败 {proxy_failed}',
       syncFromCrsTitle: '从 CRS 同步账号',
       syncFromCrsDesc:
         '将 claude-relay-service（CRS）中的账号同步到当前系统（不会在浏览器侧直接请求 CRS）。',
@@ -1988,6 +2010,11 @@ export default {
       deleteProxy: '删除代理',
       deleteConfirmMessage: "确定要删除代理 '{name}' 吗？",
       testProxy: '测试代理',
+      dataExport: '导出',
+      dataExportConfirmMessage: '导出的数据包含代理的敏感信息，请妥善保存。',
+      dataExportConfirm: '确认导出',
+      dataExported: '数据导出成功',
+      dataExportFailed: '数据导出失败',
       columns: {
         name: '名称',
         protocol: '协议',