Add site batch import/export functionality with preview and validation

Co-authored-by: jxxghp <jxxghp@live.cn>

src/locales/en-US.ts

@@ -1007,6 +1007,7 @@ export default {
       limitSeconds: 'Access Interval (seconds)',
       useProxy: 'Use Proxy',
       browserSimulation: 'Browser Simulation',
+      selectFile: 'Select File',
     },
     hints: {
       url: 'Format: http://www.example.com/',
@@ -1024,16 +1025,36 @@ export default {
       limitSeconds: 'Minimum interval between each access',
       useProxy: 'Use proxy server to access this site',
       browserSimulation: 'Use browser simulation for authentic site access',
+      import: 'Batch import site data, supports JSON format files',
+      selectFile: 'Select JSON file',
+      dragDropFile: 'Drag and drop file here or click to select file',
+      supportedFormat: 'Supports JSON format site configuration files',
     },
     actions: {
       add: 'Add Site',
       edit: 'Edit Site',
+      import: 'Batch Import',
+      export: 'Batch Export',
+      startImport: 'Start Import',
     },
     messages: {
       addSuccess: 'Site added successfully',
       addFailed: 'Failed to add site',
       updateSuccess: 'Updated successfully',
       updateFailed: 'Update failed',
+      exportSuccess: 'Sites exported successfully',
+      exportFailed: 'Failed to export sites',
+      importSuccess: 'Successfully imported {count} sites',
+      importFailed: 'Failed to import sites',
+      importPartialFailed: 'Import completed, {success} successful, {failed} failed',
+      noDataToImport: 'No data to import',
+      noValidData: 'No valid data',
+      someInvalidData: 'Some data is invalid, valid data: {valid}/{total}',
+      invalidFileType: 'Unsupported file type, please select a JSON file',
+      invalidFileFormat: 'Invalid file format, please check file content',
+      parseFileError: 'Failed to parse file, please check file format',
+      previewData: 'Preview data ({count} sites)',
+      importing: 'Importing... ({progress}%)',
     },
     errors: {
       loadDownloader: 'Failed to load downloader settings',
@@ -1068,6 +1089,13 @@ export default {
     accessTime: 'Access Time',
     responseTime: 'Response Time',
     noTimeRecords: 'No Time Records',
+    preview: {
+      title: 'Preview Sites',
+      showing: 'Showing {count}/{total}',
+      unnamed: 'Unnamed Site',
+      noUrl: 'No Site URL',
+      invalid: 'Invalid Data',
+    },
   },
   message: {
     loadMore: 'Load More',