From 4cd9ad00d2797e63c072cf6d3475938c02b20736 Mon Sep 17 00:00:00 2001
From: shuaiplus <2327005759@qq.com>
Date: Sat, 27 Jun 2026 12:38:41 +0800
Subject: [PATCH] Add backup-related error messages and improve UI styles

- Updated English, Spanish, Russian, Simplified Chinese, and Traditional Chinese locale files to include new error messages related to backup and restore processes.
- Added prefix and suffix strings for the "cached empty" message to enhance clarity in user prompts.
- Enhanced the management CSS with new styles for the backup browser refresh prompt to improve layout and user experience.
---
 webapp/src/components/BackupCenterPage.tsx    |  3 +-
 .../backup-center/RemoteBackupBrowser.tsx     | 16 +++-
 webapp/src/lib/i18n.ts                        | 88 +++++++++++++++++++
 webapp/src/lib/i18n/locales/en.ts             | 75 ++++++++++++++++
 webapp/src/lib/i18n/locales/es.ts             | 75 ++++++++++++++++
 webapp/src/lib/i18n/locales/ru.ts             | 75 ++++++++++++++++
 webapp/src/lib/i18n/locales/zh-CN.ts          | 75 ++++++++++++++++
 webapp/src/lib/i18n/locales/zh-TW.ts          | 75 ++++++++++++++++
 webapp/src/styles/management.css              |  4 +
 9 files changed, 483 insertions(+), 3 deletions(-)

diff --git a/webapp/src/components/BackupCenterPage.tsx b/webapp/src/components/BackupCenterPage.tsx
index 2537db1..de38543 100644
--- a/webapp/src/components/BackupCenterPage.tsx
+++ b/webapp/src/components/BackupCenterPage.tsx
@@ -193,7 +193,7 @@ export default function BackupCenterPage(props: BackupCenterPageProps) {
   const [downloadingRemotePercent, setDownloadingRemotePercent] = useState<number | null>(null);
   const [restoringRemotePath, setRestoringRemotePath] = useState('');
   const [deletingRemotePath, setDeletingRemotePath] = useState('');
-  const [localError, setLocalError] = useState('');
+  const [, setLocalError] = useState('');
   const [restoreProgress, setRestoreProgress] = useState<BackupProgressState | null>(null);
   const [restoreElapsedSeconds, setRestoreElapsedSeconds] = useState(0);
   const [confirmLocalRestoreOpen, setConfirmLocalRestoreOpen] = useState(false);
@@ -974,7 +974,6 @@ export default function BackupCenterPage(props: BackupCenterPageProps) {
         }}
       />
 
-      {localError ? <div className="local-error">{localError}</div> : null}
       {restoreProgress && typeof document !== 'undefined' ? createPortal((
         <div className="restore-progress-overlay" aria-live="polite">
           <section className="restore-progress-card restore-progress-modal">
diff --git a/webapp/src/components/backup-center/RemoteBackupBrowser.tsx b/webapp/src/components/backup-center/RemoteBackupBrowser.tsx
index a07fdd1..0faa00c 100644
--- a/webapp/src/components/backup-center/RemoteBackupBrowser.tsx
+++ b/webapp/src/components/backup-center/RemoteBackupBrowser.tsx
@@ -32,6 +32,18 @@ export function RemoteBackupBrowser(props: RemoteBackupBrowserProps) {
       : t('txt_downloading_percent', { percent: props.downloadingRemotePercent });
   };
 
+  const renderRefreshPrompt = () => (
+    <div className="backup-browser-empty">
+      <span className="backup-browser-refresh-prompt">
+        <span>{t('txt_backup_remote_cached_empty_prefix')}</span>
+        <button type="button" className="btn btn-secondary small" disabled={!props.canBrowse || props.loadingRemoteBrowser || props.disableWhileBusy} onClick={props.onRefresh}>
+          {t('txt_backup_remote_refresh')}
+        </button>
+        <span>{t('txt_backup_remote_cached_empty_suffix')}</span>
+      </span>
+    </div>
+  );
+
   return (
     <>
       <div className="backup-divider" />
@@ -42,8 +54,10 @@ export function RemoteBackupBrowser(props: RemoteBackupBrowserProps) {
 
       {!props.destinationIsSaved ? (
         <div className="backup-browser-empty">{t('txt_backup_remote_save_first')}</div>
+      ) : props.loadingRemoteBrowser && !props.remoteBrowser ? (
+        <div className="backup-browser-empty">{t('txt_backup_remote_loading')}</div>
       ) : !props.remoteBrowser ? (
-        <div className="backup-browser-empty">{t('txt_backup_remote_cached_empty')}</div>
+        renderRefreshPrompt()
       ) : (
         <>
           <div className="backup-browser-path">
diff --git a/webapp/src/lib/i18n.ts b/webapp/src/lib/i18n.ts
index 93a3ced..f6ea5b0 100644
--- a/webapp/src/lib/i18n.ts
+++ b/webapp/src/lib/i18n.ts
@@ -113,27 +113,115 @@ export function translateServerError(message: string | null | undefined, fallbac
     return t('txt_rate_limit_try_again_seconds', { seconds: rateLimitMatch[1] });
   }
 
+  const backupDestinationLimitMatch = normalized.match(/^You can save up to (\d+) backup destinations$/i);
+  if (backupDestinationLimitMatch) {
+    return t('txt_backup_error_destination_limit', { count: backupDestinationLimitMatch[1] });
+  }
+
+  const backupArchiveVerificationMatch = normalized.match(/^Backup archive upload verification failed after (\d+) attempts: (.+)$/i);
+  if (backupArchiveVerificationMatch) {
+    return t('txt_backup_error_archive_upload_verification_failed_attempts', {
+      count: backupArchiveVerificationMatch[1],
+      reason: translateServerError(backupArchiveVerificationMatch[2], backupArchiveVerificationMatch[2]),
+    });
+  }
+
+  const remoteAttachmentStatusMatch = normalized.match(/^Remote attachment (download|batch download) failed: (\d+)$/i);
+  if (remoteAttachmentStatusMatch) {
+    return t(
+      remoteAttachmentStatusMatch[1].toLowerCase() === 'batch download'
+        ? 'txt_backup_error_remote_attachment_batch_download_failed_status'
+        : 'txt_backup_error_remote_attachment_download_failed_status',
+      { status: remoteAttachmentStatusMatch[2] }
+    );
+  }
+
+  const providerStatusMatch = normalized.match(/^(WebDAV|S3) (directory creation|upload|listing|download|delete|existence check) failed: (\d+)$/i);
+  if (providerStatusMatch) {
+    const provider = providerStatusMatch[1].toLowerCase() === 'webdav' ? 'webdav' : 's3';
+    const actionKey = providerStatusMatch[2].toLowerCase().replace(/\s+/g, '_');
+    return t(`txt_backup_error_${provider}_${actionKey}_failed_status`, { status: providerStatusMatch[3] });
+  }
+
   const key = {
     'Account is disabled': 'txt_server_error_account_disabled',
+    'Another backup or restore run is already in progress': 'txt_backup_error_another_backup_or_restore_running',
+    'Another backup run is already in progress': 'txt_backup_error_another_backup_running',
+    'Backup archive upload failed': 'txt_backup_error_archive_upload_failed',
+    'Backup attachment blob is invalid': 'txt_backup_error_attachment_blob_invalid',
+    'Backup attachment blob is required': 'txt_backup_error_attachment_blob_required',
+    'Backup attachment blob not found': 'txt_backup_error_attachment_blob_not_found',
+    'Backup attachment download failed': 'txt_backup_error_attachment_download_failed',
+    'Backup destination is invalid': 'txt_backup_error_destination_invalid',
+    'Backup destination not found': 'txt_backup_error_destination_not_found',
+    'Backup destination ids must be unique': 'txt_backup_error_destination_ids_unique',
+    'Backup destination type is invalid': 'txt_backup_error_destination_type_invalid',
+    'Backup destinations are invalid': 'txt_backup_error_destinations_invalid',
+    'Backup export payload is invalid': 'txt_backup_error_export_payload_invalid',
+    'Backup file checksum does not match its filename': 'txt_backup_error_file_checksum_mismatch',
+    'Backup file is required': 'txt_backup_error_file_required',
+    'Backup interval hours must be between 1 and 99': 'txt_backup_error_interval_hours_range',
+    'Backup retention count must be between 1 and 1000': 'txt_backup_error_retention_count_range',
+    'Backup run failed': 'txt_backup_error_run_failed',
+    'Backup run payload is invalid': 'txt_backup_error_run_payload_invalid',
+    'Backup run response is invalid': 'txt_backup_error_run_response_invalid',
+    'Backup settings are invalid': 'txt_backup_error_settings_invalid',
+    'Backup settings could not be loaded': 'txt_backup_error_settings_load_failed',
+    'Backup settings envelope is invalid': 'txt_backup_error_settings_envelope_invalid',
+    'Backup settings need administrator reactivation after restore': 'txt_backup_error_settings_need_reactivation',
+    'Backup settings payload is invalid': 'txt_backup_error_settings_payload_invalid',
+    'Backup settings repair payload is invalid': 'txt_backup_error_settings_repair_payload_invalid',
+    'Backup settings repair state could not be loaded': 'txt_backup_error_settings_repair_state_load_failed',
+    'Backup start time must be in HH:mm format': 'txt_backup_error_start_time_format',
     'Client IP is required': 'txt_server_error_client_ip_required',
     'ClientId or clientSecret is incorrect. Try again': 'txt_server_error_client_credentials_incorrect',
+    'Content-Type must be multipart/form-data': 'txt_backup_error_multipart_required',
     'Email already registered': 'txt_server_error_email_already_registered',
     'Email and password are required': 'txt_server_error_email_password_required',
     'Email is required': 'txt_server_error_email_required',
+    'Forbidden': 'txt_server_error_forbidden',
     'Invite code is invalid or expired': 'txt_server_error_invite_invalid_or_expired',
     'Invite code is required': 'txt_server_error_invite_required',
+    'Invalid backup timezone': 'txt_backup_error_timezone_invalid',
+    'Invalid password': 'txt_server_error_invalid_password',
     'Invalid refresh token': 'txt_server_error_invalid_refresh_token',
+    'Invalid remote backup path': 'txt_backup_error_remote_path_invalid',
     'Invalid request payload': 'txt_server_error_invalid_request_payload',
+    'Invalid user verification token': 'txt_server_error_invalid_user_verification_token',
     'JWT_SECRET is not set': 'txt_server_error_jwt_secret_missing',
     'JWT_SECRET is using the default/sample value. Please change it.': 'txt_server_error_jwt_secret_default',
     'JWT_SECRET must be at least 32 characters': 'txt_server_error_jwt_secret_too_short',
     'Parameter error': 'txt_server_error_parameter_error',
+    'Please select a backup file': 'txt_backup_error_select_backup_file',
+    'Please select a backup ZIP file': 'txt_backup_error_select_backup_zip_file',
     'Refresh token is required': 'txt_server_error_refresh_token_required',
+    'Remote backup ZIP checksum verification failed': 'txt_backup_error_remote_zip_checksum_failed',
+    'Remote backup ZIP size verification failed': 'txt_backup_error_remote_zip_size_failed',
+    'Remote backup delete failed': 'txt_backup_error_remote_delete_failed',
+    'Remote backup download failed': 'txt_backup_error_remote_download_failed',
+    'Remote backup download payload is invalid': 'txt_backup_error_remote_download_payload_invalid',
+    'Remote backup integrity inspection failed': 'txt_backup_error_remote_integrity_failed',
+    'Remote backup listing failed': 'txt_backup_error_remote_listing_failed',
+    'Remote restore payload is invalid': 'txt_backup_error_remote_restore_payload_invalid',
     'Registration is temporarily unavailable, retry once': 'txt_server_error_registration_retry',
+    'S3 access key is required': 'txt_backup_error_s3_access_key_required',
+    'S3 bucket is required': 'txt_backup_error_s3_bucket_required',
+    'S3 endpoint is required': 'txt_backup_error_s3_endpoint_required',
+    'S3 endpoint must start with http:// or https://': 'txt_backup_error_s3_endpoint_protocol',
+    'S3 secret key is required': 'txt_backup_error_s3_secret_key_required',
     'TOTP token is required': 'txt_server_error_totp_token_required',
     'Two factor required.': 'txt_server_error_two_factor_required',
     'Two-step token is invalid. Try again.': 'txt_server_error_two_factor_invalid',
+    'Unable to read backup file': 'txt_backup_error_read_backup_file_failed',
+    'Unsupported backup destination type': 'txt_backup_error_destination_type_unsupported',
     'Username or password is incorrect. Try again': 'txt_server_error_username_password_incorrect',
+    'WebDAV password is required': 'txt_backup_error_webdav_password_required',
+    'WebDAV remote backup path is too deep for safe attachment batching': 'txt_backup_error_webdav_path_too_deep',
+    'WebDAV server URL is required': 'txt_backup_error_webdav_url_required',
+    'WebDAV server URL must start with http:// or https://': 'txt_backup_error_webdav_url_protocol',
+    'WebDAV username is required': 'txt_backup_error_webdav_username_required',
+    'masterPasswordHash is required': 'txt_server_error_master_password_hash_required',
+    'masterPasswordHash or userVerificationToken is required': 'txt_server_error_master_password_or_verification_required',
   }[normalized];
 
   return key ? t(key) : normalized;
diff --git a/webapp/src/lib/i18n/locales/en.ts b/webapp/src/lib/i18n/locales/en.ts
index 172fc1c..a3c1cc3 100644
--- a/webapp/src/lib/i18n/locales/en.ts
+++ b/webapp/src/lib/i18n/locales/en.ts
@@ -224,6 +224,8 @@ const en: Record<string, string> = {
   "txt_backup_restore_progress_remote_finalize_detail": "The server is performing final validation and then switching the verified restore data into the live tables.",
   "txt_backup_remote_loading": "Loading remote backups...",
   "txt_backup_remote_cached_empty": "Click Refresh to load this destination.",
+  "txt_backup_remote_cached_empty_prefix": "Click",
+  "txt_backup_remote_cached_empty_suffix": "to load this destination.",
   "txt_backup_remote_empty": "No backup files found in this folder.",
   "txt_backup_remote_folder": "Folder",
   "txt_backup_remote_unknown_time": "Unknown time",
@@ -247,6 +249,74 @@ const en: Record<string, string> = {
   "txt_backup_remote_run_invalid_response": "Invalid remote backup run response",
   "txt_backup_settings_invalid_response": "Invalid backup settings response",
   "txt_backup_import_invalid_response": "Invalid backup import response",
+  "txt_backup_error_another_backup_or_restore_running": "Another backup or restore task is already running.",
+  "txt_backup_error_another_backup_running": "Another backup task is already running.",
+  "txt_backup_error_archive_upload_failed": "Backup archive upload failed.",
+  "txt_backup_error_archive_upload_verification_failed_attempts": "Backup upload verification failed after {count} attempt(s): {reason}",
+  "txt_backup_error_attachment_blob_invalid": "Backup attachment blob is invalid.",
+  "txt_backup_error_attachment_blob_required": "Backup attachment blob is required.",
+  "txt_backup_error_attachment_blob_not_found": "Backup attachment blob not found.",
+  "txt_backup_error_attachment_download_failed": "Backup attachment download failed.",
+  "txt_backup_error_destination_invalid": "Backup destination is invalid.",
+  "txt_backup_error_destination_limit": "You can save up to {count} backup destinations.",
+  "txt_backup_error_destination_not_found": "Backup destination not found.",
+  "txt_backup_error_destination_ids_unique": "Backup destination IDs must be unique.",
+  "txt_backup_error_destination_type_invalid": "Backup destination type is invalid.",
+  "txt_backup_error_destination_type_unsupported": "Unsupported backup destination type.",
+  "txt_backup_error_destinations_invalid": "Backup destinations are invalid.",
+  "txt_backup_error_export_payload_invalid": "Backup export payload is invalid.",
+  "txt_backup_error_file_checksum_mismatch": "Backup file checksum does not match its filename.",
+  "txt_backup_error_file_required": "Backup file is required.",
+  "txt_backup_error_interval_hours_range": "Backup interval must be between 1 and 99 hours.",
+  "txt_backup_error_multipart_required": "The upload request must use multipart/form-data.",
+  "txt_backup_error_read_backup_file_failed": "Unable to read backup file.",
+  "txt_backup_error_remote_attachment_batch_download_failed_status": "Remote attachment batch download failed: HTTP {status}.",
+  "txt_backup_error_remote_attachment_download_failed_status": "Remote attachment download failed: HTTP {status}.",
+  "txt_backup_error_remote_delete_failed": "Remote backup delete failed.",
+  "txt_backup_error_remote_download_failed": "Remote backup download failed.",
+  "txt_backup_error_remote_download_payload_invalid": "Remote backup download request is invalid.",
+  "txt_backup_error_remote_integrity_failed": "Remote backup integrity inspection failed.",
+  "txt_backup_error_remote_listing_failed": "Remote backup listing failed.",
+  "txt_backup_error_remote_path_invalid": "Remote backup path is invalid.",
+  "txt_backup_error_remote_restore_payload_invalid": "Remote restore request is invalid.",
+  "txt_backup_error_remote_zip_checksum_failed": "Remote backup ZIP checksum verification failed.",
+  "txt_backup_error_remote_zip_size_failed": "Remote backup ZIP size verification failed.",
+  "txt_backup_error_retention_count_range": "Backup retention count must be between 1 and 1000.",
+  "txt_backup_error_run_failed": "Backup run failed.",
+  "txt_backup_error_run_payload_invalid": "Backup run request is invalid.",
+  "txt_backup_error_run_response_invalid": "Backup run response is invalid.",
+  "txt_backup_error_s3_access_key_required": "S3 access key is required.",
+  "txt_backup_error_s3_bucket_required": "S3 bucket is required.",
+  "txt_backup_error_s3_delete_failed_status": "S3 delete failed: HTTP {status}.",
+  "txt_backup_error_s3_download_failed_status": "S3 download failed: HTTP {status}.",
+  "txt_backup_error_s3_endpoint_required": "S3 endpoint is required.",
+  "txt_backup_error_s3_endpoint_protocol": "S3 endpoint must start with http:// or https://.",
+  "txt_backup_error_s3_existence_check_failed_status": "S3 existence check failed: HTTP {status}.",
+  "txt_backup_error_s3_listing_failed_status": "S3 listing failed: HTTP {status}.",
+  "txt_backup_error_s3_secret_key_required": "S3 secret key is required.",
+  "txt_backup_error_s3_upload_failed_status": "S3 upload failed: HTTP {status}.",
+  "txt_backup_error_select_backup_file": "Please select a backup file.",
+  "txt_backup_error_select_backup_zip_file": "Please select a backup ZIP file.",
+  "txt_backup_error_settings_envelope_invalid": "Backup settings envelope is invalid.",
+  "txt_backup_error_settings_invalid": "Backup settings are invalid.",
+  "txt_backup_error_settings_load_failed": "Backup settings could not be loaded.",
+  "txt_backup_error_settings_need_reactivation": "Backup settings need administrator reactivation after restore.",
+  "txt_backup_error_settings_payload_invalid": "Backup settings request is invalid.",
+  "txt_backup_error_settings_repair_payload_invalid": "Backup settings repair request is invalid.",
+  "txt_backup_error_settings_repair_state_load_failed": "Backup settings repair state could not be loaded.",
+  "txt_backup_error_start_time_format": "Backup start time must be in HH:mm format.",
+  "txt_backup_error_timezone_invalid": "Backup timezone is invalid.",
+  "txt_backup_error_webdav_delete_failed_status": "WebDAV delete failed: HTTP {status}.",
+  "txt_backup_error_webdav_directory_creation_failed_status": "WebDAV directory creation failed: HTTP {status}.",
+  "txt_backup_error_webdav_download_failed_status": "WebDAV download failed: HTTP {status}.",
+  "txt_backup_error_webdav_existence_check_failed_status": "WebDAV existence check failed: HTTP {status}.",
+  "txt_backup_error_webdav_listing_failed_status": "WebDAV listing failed: HTTP {status}.",
+  "txt_backup_error_webdav_password_required": "WebDAV password is required.",
+  "txt_backup_error_webdav_path_too_deep": "WebDAV remote backup path is too deep for safe attachment batching.",
+  "txt_backup_error_webdav_upload_failed_status": "WebDAV upload failed: HTTP {status}.",
+  "txt_backup_error_webdav_url_required": "WebDAV server URL is required.",
+  "txt_backup_error_webdav_url_protocol": "WebDAV server URL must start with http:// or https://.",
+  "txt_backup_error_webdav_username_required": "WebDAV username is required.",
   "txt_backup_destination": "Backup Destination",
   "txt_backup_protocol_webdav": "WebDAV",
   "txt_backup_protocol_s3": "S3",
@@ -522,16 +592,21 @@ const en: Record<string, string> = {
   "txt_server_error_account_disabled": "Account is disabled",
   "txt_server_error_client_credentials_incorrect": "Client ID or client secret is incorrect. Try again.",
   "txt_server_error_client_ip_required": "Client IP is required",
+  "txt_server_error_forbidden": "You do not have permission to perform this action.",
   "txt_server_error_email_already_registered": "Email already registered",
   "txt_server_error_email_password_required": "Email and password are required",
   "txt_server_error_email_required": "Email is required",
+  "txt_server_error_invalid_password": "Invalid password.",
   "txt_server_error_invalid_refresh_token": "Session expired. Please sign in again.",
+  "txt_server_error_invalid_user_verification_token": "Invalid user verification token.",
   "txt_server_error_invalid_request_payload": "Invalid request payload",
   "txt_server_error_invite_invalid_or_expired": "Invite code is invalid or expired",
   "txt_server_error_invite_required": "Invite code is required",
   "txt_server_error_jwt_secret_default": "JWT_SECRET is using the default/sample value. Please change it.",
   "txt_server_error_jwt_secret_missing": "JWT_SECRET is not set",
   "txt_server_error_jwt_secret_too_short": "JWT_SECRET must be at least 32 characters",
+  "txt_server_error_master_password_hash_required": "Master password verification is required.",
+  "txt_server_error_master_password_or_verification_required": "Master password or user verification token is required.",
   "txt_server_error_parameter_error": "Parameter error",
   "txt_server_error_refresh_token_required": "Session is missing. Please sign in again.",
   "txt_server_error_registration_retry": "Registration is temporarily unavailable. Please retry once.",
diff --git a/webapp/src/lib/i18n/locales/es.ts b/webapp/src/lib/i18n/locales/es.ts
index e32b9fd..7675d6f 100644
--- a/webapp/src/lib/i18n/locales/es.ts
+++ b/webapp/src/lib/i18n/locales/es.ts
@@ -224,6 +224,8 @@ const es: Record<string, string> = {
   "txt_backup_restore_progress_remote_finalize_detail": "El servidor está realizando la validación final y luego cambiando los datos de restauración verificados a las tablas activas.",
   "txt_backup_remote_loading": "Cargando copias remotas...",
   "txt_backup_remote_cached_empty": "Haga clic en Actualizar para cargar este destino.",
+  "txt_backup_remote_cached_empty_prefix": "Haga clic en",
+  "txt_backup_remote_cached_empty_suffix": "para cargar este destino.",
   "txt_backup_remote_empty": "No se encontraron archivos de copia de seguridad en esta carpeta.",
   "txt_backup_remote_folder": "Carpeta",
   "txt_backup_remote_unknown_time": "Hora desconocida",
@@ -247,6 +249,74 @@ const es: Record<string, string> = {
   "txt_backup_remote_run_invalid_response": "Respuesta de ejecución de copia de seguridad remota no válida",
   "txt_backup_settings_invalid_response": "Respuesta de configuración de copia de seguridad no válida",
   "txt_backup_import_invalid_response": "Respuesta de importación de copia de seguridad no válida",
+  "txt_backup_error_another_backup_or_restore_running": "Ya hay una tarea de copia o restauración en curso.",
+  "txt_backup_error_another_backup_running": "Ya hay una tarea de copia en curso.",
+  "txt_backup_error_archive_upload_failed": "No se pudo subir el archivo de copia.",
+  "txt_backup_error_archive_upload_verification_failed_attempts": "La verificación de subida falló tras {count} intento(s): {reason}",
+  "txt_backup_error_attachment_blob_invalid": "El objeto de adjunto de copia no es válido.",
+  "txt_backup_error_attachment_blob_required": "Falta el objeto de adjunto de copia.",
+  "txt_backup_error_attachment_blob_not_found": "No se encontró el objeto de adjunto de copia.",
+  "txt_backup_error_attachment_download_failed": "No se pudo descargar el adjunto de copia.",
+  "txt_backup_error_destination_invalid": "El destino de copia no es válido.",
+  "txt_backup_error_destination_limit": "Puede guardar hasta {count} destinos de copia.",
+  "txt_backup_error_destination_not_found": "No se encontró el destino de copia.",
+  "txt_backup_error_destination_ids_unique": "Los ID de destino de copia no pueden repetirse.",
+  "txt_backup_error_destination_type_invalid": "El tipo de destino de copia no es válido.",
+  "txt_backup_error_destination_type_unsupported": "Tipo de destino de copia no compatible.",
+  "txt_backup_error_destinations_invalid": "La lista de destinos de copia no es válida.",
+  "txt_backup_error_export_payload_invalid": "La solicitud de exportación de copia no es válida.",
+  "txt_backup_error_file_checksum_mismatch": "La suma de verificación de la copia no coincide con el nombre del archivo.",
+  "txt_backup_error_file_required": "Seleccione un archivo de copia.",
+  "txt_backup_error_interval_hours_range": "El intervalo de copia debe estar entre 1 y 99 horas.",
+  "txt_backup_error_multipart_required": "La solicitud de subida debe usar multipart/form-data.",
+  "txt_backup_error_read_backup_file_failed": "No se pudo leer el archivo de copia.",
+  "txt_backup_error_remote_attachment_batch_download_failed_status": "Error al descargar adjuntos remotos por lotes: HTTP {status}.",
+  "txt_backup_error_remote_attachment_download_failed_status": "Error al descargar adjunto remoto: HTTP {status}.",
+  "txt_backup_error_remote_delete_failed": "No se pudo eliminar la copia remota.",
+  "txt_backup_error_remote_download_failed": "No se pudo descargar la copia remota.",
+  "txt_backup_error_remote_download_payload_invalid": "La solicitud de descarga remota no es válida.",
+  "txt_backup_error_remote_integrity_failed": "No se pudo inspeccionar la integridad de la copia remota.",
+  "txt_backup_error_remote_listing_failed": "No se pudo leer la lista de copias remotas.",
+  "txt_backup_error_remote_path_invalid": "La ruta de copia remota no es válida.",
+  "txt_backup_error_remote_restore_payload_invalid": "La solicitud de restauración remota no es válida.",
+  "txt_backup_error_remote_zip_checksum_failed": "Falló la verificación de suma del ZIP remoto.",
+  "txt_backup_error_remote_zip_size_failed": "Falló la verificación de tamaño del ZIP remoto.",
+  "txt_backup_error_retention_count_range": "La retención debe estar entre 1 y 1000.",
+  "txt_backup_error_run_failed": "La ejecución de copia falló.",
+  "txt_backup_error_run_payload_invalid": "La solicitud de ejecución de copia no es válida.",
+  "txt_backup_error_run_response_invalid": "La respuesta de ejecución de copia no es válida.",
+  "txt_backup_error_s3_access_key_required": "La clave de acceso S3 es obligatoria.",
+  "txt_backup_error_s3_bucket_required": "El bucket S3 es obligatorio.",
+  "txt_backup_error_s3_delete_failed_status": "Eliminación S3 fallida: HTTP {status}.",
+  "txt_backup_error_s3_download_failed_status": "Descarga S3 fallida: HTTP {status}.",
+  "txt_backup_error_s3_endpoint_required": "El endpoint S3 es obligatorio.",
+  "txt_backup_error_s3_endpoint_protocol": "El endpoint S3 debe empezar por http:// o https://.",
+  "txt_backup_error_s3_existence_check_failed_status": "Comprobación de existencia S3 fallida: HTTP {status}.",
+  "txt_backup_error_s3_listing_failed_status": "Listado S3 fallido: HTTP {status}.",
+  "txt_backup_error_s3_secret_key_required": "La clave secreta S3 es obligatoria.",
+  "txt_backup_error_s3_upload_failed_status": "Subida S3 fallida: HTTP {status}.",
+  "txt_backup_error_select_backup_file": "Seleccione un archivo de copia.",
+  "txt_backup_error_select_backup_zip_file": "Seleccione un archivo ZIP de copia.",
+  "txt_backup_error_settings_envelope_invalid": "El contenedor cifrado de configuración de copia no es válido.",
+  "txt_backup_error_settings_invalid": "La configuración de copia no es válida.",
+  "txt_backup_error_settings_load_failed": "No se pudo cargar la configuración de copia.",
+  "txt_backup_error_settings_need_reactivation": "La configuración de copia requiere reactivación de administrador tras la restauración.",
+  "txt_backup_error_settings_payload_invalid": "La solicitud de configuración de copia no es válida.",
+  "txt_backup_error_settings_repair_payload_invalid": "La solicitud de reparación de configuración no es válida.",
+  "txt_backup_error_settings_repair_state_load_failed": "No se pudo cargar el estado de reparación de configuración.",
+  "txt_backup_error_start_time_format": "La hora de inicio debe tener formato HH:mm.",
+  "txt_backup_error_timezone_invalid": "La zona horaria de copia no es válida.",
+  "txt_backup_error_webdav_delete_failed_status": "Eliminación WebDAV fallida: HTTP {status}.",
+  "txt_backup_error_webdav_directory_creation_failed_status": "Creación de directorio WebDAV fallida: HTTP {status}.",
+  "txt_backup_error_webdav_download_failed_status": "Descarga WebDAV fallida: HTTP {status}.",
+  "txt_backup_error_webdav_existence_check_failed_status": "Comprobación de existencia WebDAV fallida: HTTP {status}.",
+  "txt_backup_error_webdav_listing_failed_status": "Listado WebDAV fallido: HTTP {status}.",
+  "txt_backup_error_webdav_password_required": "La contraseña WebDAV es obligatoria.",
+  "txt_backup_error_webdav_path_too_deep": "La ruta remota WebDAV es demasiado profunda para procesar adjuntos por lotes de forma segura.",
+  "txt_backup_error_webdav_upload_failed_status": "Subida WebDAV fallida: HTTP {status}.",
+  "txt_backup_error_webdav_url_required": "La URL del servidor WebDAV es obligatoria.",
+  "txt_backup_error_webdav_url_protocol": "La URL WebDAV debe empezar por http:// o https://.",
+  "txt_backup_error_webdav_username_required": "El usuario WebDAV es obligatorio.",
   "txt_backup_destination": "Destino de copia",
   "txt_backup_protocol_webdav": "WebDAV",
   "txt_backup_protocol_s3": "S3",
@@ -522,16 +592,21 @@ const es: Record<string, string> = {
   "txt_server_error_account_disabled": "La cuenta está deshabilitada",
   "txt_server_error_client_credentials_incorrect": "El ID de cliente o el secreto de cliente no son correctos. Inténtalo de nuevo.",
   "txt_server_error_client_ip_required": "Se requiere la IP del cliente",
+  "txt_server_error_forbidden": "No tiene permiso para realizar esta acción.",
   "txt_server_error_email_already_registered": "Este correo ya está registrado",
   "txt_server_error_email_password_required": "Correo y contraseña son obligatorios",
   "txt_server_error_email_required": "El correo es obligatorio",
+  "txt_server_error_invalid_password": "Contraseña no válida.",
   "txt_server_error_invalid_refresh_token": "La sesión caducó. Inicia sesión de nuevo.",
+  "txt_server_error_invalid_user_verification_token": "Token de verificación de usuario no válido.",
   "txt_server_error_invalid_request_payload": "Solicitud no válida",
   "txt_server_error_invite_invalid_or_expired": "El código de invitación no es válido o ha caducado",
   "txt_server_error_invite_required": "El código de invitación es obligatorio",
   "txt_server_error_jwt_secret_default": "JWT_SECRET usa el valor predeterminado/de ejemplo. Cámbialo.",
   "txt_server_error_jwt_secret_missing": "JWT_SECRET no está configurado",
   "txt_server_error_jwt_secret_too_short": "JWT_SECRET debe tener al menos 32 caracteres",
+  "txt_server_error_master_password_hash_required": "Se requiere verificación de la contraseña maestra.",
+  "txt_server_error_master_password_or_verification_required": "Se requiere contraseña maestra o token de verificación de usuario.",
   "txt_server_error_parameter_error": "Error de parámetros",
   "txt_server_error_refresh_token_required": "Falta la sesión. Inicia sesión de nuevo.",
   "txt_server_error_registration_retry": "El registro no está disponible temporalmente. Inténtalo una vez más.",
diff --git a/webapp/src/lib/i18n/locales/ru.ts b/webapp/src/lib/i18n/locales/ru.ts
index dc0f4c2..fd4507c 100644
--- a/webapp/src/lib/i18n/locales/ru.ts
+++ b/webapp/src/lib/i18n/locales/ru.ts
@@ -224,6 +224,8 @@ const ru: Record<string, string> = {
   "txt_backup_restore_progress_remote_finalize_detail": "Сервер выполняет окончательную проверку, а затем переключает проверенные данные восстановления в живые таблицы.",
   "txt_backup_remote_loading": "Загрузка удаленных резервных копий...",
   "txt_backup_remote_cached_empty": "Нажмите «Обновить», чтобы загрузить это место назначения.",
+  "txt_backup_remote_cached_empty_prefix": "Нажмите",
+  "txt_backup_remote_cached_empty_suffix": "чтобы загрузить это место назначения.",
   "txt_backup_remote_empty": "В этой папке не найдено файлов резервных копий.",
   "txt_backup_remote_folder": "Папка",
   "txt_backup_remote_unknown_time": "Неизвестное время",
@@ -247,6 +249,74 @@ const ru: Record<string, string> = {
   "txt_backup_remote_run_invalid_response": "Неверный ответ на удаленное резервное копирование.",
   "txt_backup_settings_invalid_response": "Неверный ответ на настройки резервного копирования",
   "txt_backup_import_invalid_response": "Неверный ответ на импорт резервной копии",
+  "txt_backup_error_another_backup_or_restore_running": "Уже выполняется задача резервного копирования или восстановления.",
+  "txt_backup_error_another_backup_running": "Уже выполняется задача резервного копирования.",
+  "txt_backup_error_archive_upload_failed": "Не удалось загрузить архив резервной копии.",
+  "txt_backup_error_archive_upload_verification_failed_attempts": "Проверка загрузки не прошла после {count} попыток: {reason}",
+  "txt_backup_error_attachment_blob_invalid": "Объект вложения резервной копии недействителен.",
+  "txt_backup_error_attachment_blob_required": "Требуется объект вложения резервной копии.",
+  "txt_backup_error_attachment_blob_not_found": "Объект вложения резервной копии не найден.",
+  "txt_backup_error_attachment_download_failed": "Не удалось скачать вложение резервной копии.",
+  "txt_backup_error_destination_invalid": "Место назначения резервной копии недействительно.",
+  "txt_backup_error_destination_limit": "Можно сохранить не более {count} мест назначения резервной копии.",
+  "txt_backup_error_destination_not_found": "Место назначения резервной копии не найдено.",
+  "txt_backup_error_destination_ids_unique": "ID мест назначения резервной копии должны быть уникальными.",
+  "txt_backup_error_destination_type_invalid": "Тип места назначения резервной копии недействителен.",
+  "txt_backup_error_destination_type_unsupported": "Неподдерживаемый тип места назначения резервной копии.",
+  "txt_backup_error_destinations_invalid": "Список мест назначения резервной копии недействителен.",
+  "txt_backup_error_export_payload_invalid": "Запрос экспорта резервной копии недействителен.",
+  "txt_backup_error_file_checksum_mismatch": "Контрольная сумма файла резервной копии не совпадает с именем файла.",
+  "txt_backup_error_file_required": "Выберите файл резервной копии.",
+  "txt_backup_error_interval_hours_range": "Интервал резервного копирования должен быть от 1 до 99 часов.",
+  "txt_backup_error_multipart_required": "Запрос загрузки должен использовать multipart/form-data.",
+  "txt_backup_error_read_backup_file_failed": "Не удалось прочитать файл резервной копии.",
+  "txt_backup_error_remote_attachment_batch_download_failed_status": "Пакетное скачивание удаленных вложений не удалось: HTTP {status}.",
+  "txt_backup_error_remote_attachment_download_failed_status": "Скачивание удаленного вложения не удалось: HTTP {status}.",
+  "txt_backup_error_remote_delete_failed": "Не удалось удалить удаленную резервную копию.",
+  "txt_backup_error_remote_download_failed": "Не удалось скачать удаленную резервную копию.",
+  "txt_backup_error_remote_download_payload_invalid": "Запрос скачивания удаленной резервной копии недействителен.",
+  "txt_backup_error_remote_integrity_failed": "Не удалось проверить целостность удаленной резервной копии.",
+  "txt_backup_error_remote_listing_failed": "Не удалось получить список удаленных резервных копий.",
+  "txt_backup_error_remote_path_invalid": "Путь удаленной резервной копии недействителен.",
+  "txt_backup_error_remote_restore_payload_invalid": "Запрос удаленного восстановления недействителен.",
+  "txt_backup_error_remote_zip_checksum_failed": "Проверка контрольной суммы удаленного ZIP не прошла.",
+  "txt_backup_error_remote_zip_size_failed": "Проверка размера удаленного ZIP не прошла.",
+  "txt_backup_error_retention_count_range": "Количество сохраняемых копий должно быть от 1 до 1000.",
+  "txt_backup_error_run_failed": "Запуск резервного копирования не удался.",
+  "txt_backup_error_run_payload_invalid": "Запрос запуска резервного копирования недействителен.",
+  "txt_backup_error_run_response_invalid": "Ответ запуска резервного копирования недействителен.",
+  "txt_backup_error_s3_access_key_required": "Требуется ключ доступа S3.",
+  "txt_backup_error_s3_bucket_required": "Требуется bucket S3.",
+  "txt_backup_error_s3_delete_failed_status": "Удаление S3 не удалось: HTTP {status}.",
+  "txt_backup_error_s3_download_failed_status": "Скачивание S3 не удалось: HTTP {status}.",
+  "txt_backup_error_s3_endpoint_required": "Требуется endpoint S3.",
+  "txt_backup_error_s3_endpoint_protocol": "Endpoint S3 должен начинаться с http:// или https://.",
+  "txt_backup_error_s3_existence_check_failed_status": "Проверка существования S3 не удалась: HTTP {status}.",
+  "txt_backup_error_s3_listing_failed_status": "Получение списка S3 не удалось: HTTP {status}.",
+  "txt_backup_error_s3_secret_key_required": "Требуется секретный ключ S3.",
+  "txt_backup_error_s3_upload_failed_status": "Загрузка S3 не удалась: HTTP {status}.",
+  "txt_backup_error_select_backup_file": "Выберите файл резервной копии.",
+  "txt_backup_error_select_backup_zip_file": "Выберите ZIP-файл резервной копии.",
+  "txt_backup_error_settings_envelope_invalid": "Зашифрованный контейнер настроек резервного копирования недействителен.",
+  "txt_backup_error_settings_invalid": "Настройки резервного копирования недействительны.",
+  "txt_backup_error_settings_load_failed": "Не удалось загрузить настройки резервного копирования.",
+  "txt_backup_error_settings_need_reactivation": "После восстановления настройки резервного копирования нужно повторно активировать администратором.",
+  "txt_backup_error_settings_payload_invalid": "Запрос настроек резервного копирования недействителен.",
+  "txt_backup_error_settings_repair_payload_invalid": "Запрос восстановления настроек резервного копирования недействителен.",
+  "txt_backup_error_settings_repair_state_load_failed": "Не удалось загрузить состояние восстановления настроек резервного копирования.",
+  "txt_backup_error_start_time_format": "Время начала резервного копирования должно быть в формате HH:mm.",
+  "txt_backup_error_timezone_invalid": "Часовой пояс резервного копирования недействителен.",
+  "txt_backup_error_webdav_delete_failed_status": "Удаление WebDAV не удалось: HTTP {status}.",
+  "txt_backup_error_webdav_directory_creation_failed_status": "Создание каталога WebDAV не удалось: HTTP {status}.",
+  "txt_backup_error_webdav_download_failed_status": "Скачивание WebDAV не удалось: HTTP {status}.",
+  "txt_backup_error_webdav_existence_check_failed_status": "Проверка существования WebDAV не удалась: HTTP {status}.",
+  "txt_backup_error_webdav_listing_failed_status": "Получение списка WebDAV не удалось: HTTP {status}.",
+  "txt_backup_error_webdav_password_required": "Требуется пароль WebDAV.",
+  "txt_backup_error_webdav_path_too_deep": "Удаленный путь WebDAV слишком глубокий для безопасной пакетной обработки вложений.",
+  "txt_backup_error_webdav_upload_failed_status": "Загрузка WebDAV не удалась: HTTP {status}.",
+  "txt_backup_error_webdav_url_required": "Требуется URL сервера WebDAV.",
+  "txt_backup_error_webdav_url_protocol": "URL WebDAV должен начинаться с http:// или https://.",
+  "txt_backup_error_webdav_username_required": "Требуется имя пользователя WebDAV.",
   "txt_backup_destination": "Место назначения резервного копирования",
   "txt_backup_protocol_webdav": "WebDAV",
   "txt_backup_protocol_s3": "S3",
@@ -522,16 +592,21 @@ const ru: Record<string, string> = {
   "txt_server_error_account_disabled": "Учетная запись отключена",
   "txt_server_error_client_credentials_incorrect": "ID клиента или секрет клиента неверны. Повторите попытку.",
   "txt_server_error_client_ip_required": "Требуется IP клиента",
+  "txt_server_error_forbidden": "У вас нет прав для выполнения этого действия.",
   "txt_server_error_email_already_registered": "Этот адрес электронной почты уже зарегистрирован",
   "txt_server_error_email_password_required": "Требуются адрес электронной почты и пароль",
   "txt_server_error_email_required": "Требуется адрес электронной почты",
+  "txt_server_error_invalid_password": "Неверный пароль.",
   "txt_server_error_invalid_refresh_token": "Сеанс истек. Войдите снова.",
+  "txt_server_error_invalid_user_verification_token": "Недействительный токен проверки пользователя.",
   "txt_server_error_invalid_request_payload": "Недопустимый запрос",
   "txt_server_error_invite_invalid_or_expired": "Код приглашения недействителен или истек",
   "txt_server_error_invite_required": "Требуется код приглашения",
   "txt_server_error_jwt_secret_default": "JWT_SECRET использует значение по умолчанию/пример. Измените его.",
   "txt_server_error_jwt_secret_missing": "JWT_SECRET не настроен",
   "txt_server_error_jwt_secret_too_short": "JWT_SECRET должен содержать не менее 32 символов",
+  "txt_server_error_master_password_hash_required": "Требуется проверка мастер-пароля.",
+  "txt_server_error_master_password_or_verification_required": "Требуется мастер-пароль или токен проверки пользователя.",
   "txt_server_error_parameter_error": "Ошибка параметров",
   "txt_server_error_refresh_token_required": "Сеанс отсутствует. Войдите снова.",
   "txt_server_error_registration_retry": "Регистрация временно недоступна. Повторите попытку один раз.",
diff --git a/webapp/src/lib/i18n/locales/zh-CN.ts b/webapp/src/lib/i18n/locales/zh-CN.ts
index 05c23b3..4d4b7ec 100644
--- a/webapp/src/lib/i18n/locales/zh-CN.ts
+++ b/webapp/src/lib/i18n/locales/zh-CN.ts
@@ -224,6 +224,8 @@ const zhCN: Record<string, string> = {
   "txt_backup_restore_progress_remote_finalize_detail": "服务器正在执行最终校验，校验通过后会把已验证的数据切换为正式数据。",
   "txt_backup_remote_loading": "正在读取远端备份...",
   "txt_backup_remote_cached_empty": "点击“刷新”后读取",
+  "txt_backup_remote_cached_empty_prefix": "点击",
+  "txt_backup_remote_cached_empty_suffix": "后读取",
   "txt_backup_remote_empty": "这个目录下还没有备份文件",
   "txt_backup_remote_folder": "文件夹",
   "txt_backup_remote_unknown_time": "未知时间",
@@ -247,6 +249,74 @@ const zhCN: Record<string, string> = {
   "txt_backup_remote_run_invalid_response": "远端备份执行响应无效",
   "txt_backup_settings_invalid_response": "备份设置响应无效",
   "txt_backup_import_invalid_response": "备份还原响应无效",
+  "txt_backup_error_another_backup_or_restore_running": "已有备份或还原任务正在执行。",
+  "txt_backup_error_another_backup_running": "已有备份任务正在执行。",
+  "txt_backup_error_archive_upload_failed": "备份压缩包上传失败。",
+  "txt_backup_error_archive_upload_verification_failed_attempts": "备份上传校验在 {count} 次尝试后仍失败：{reason}",
+  "txt_backup_error_attachment_blob_invalid": "备份附件对象无效。",
+  "txt_backup_error_attachment_blob_required": "缺少备份附件对象。",
+  "txt_backup_error_attachment_blob_not_found": "未找到备份附件对象。",
+  "txt_backup_error_attachment_download_failed": "备份附件下载失败。",
+  "txt_backup_error_destination_invalid": "备份地点无效。",
+  "txt_backup_error_destination_limit": "最多只能保存 {count} 个备份地点。",
+  "txt_backup_error_destination_not_found": "未找到备份地点。",
+  "txt_backup_error_destination_ids_unique": "备份地点 ID 不能重复。",
+  "txt_backup_error_destination_type_invalid": "备份地点类型无效。",
+  "txt_backup_error_destination_type_unsupported": "不支持的备份地点类型。",
+  "txt_backup_error_destinations_invalid": "备份地点列表无效。",
+  "txt_backup_error_export_payload_invalid": "备份导出请求无效。",
+  "txt_backup_error_file_checksum_mismatch": "备份文件校验值与文件名不一致。",
+  "txt_backup_error_file_required": "请选择备份文件。",
+  "txt_backup_error_interval_hours_range": "备份间隔必须在 1 到 99 小时之间。",
+  "txt_backup_error_multipart_required": "上传请求必须使用 multipart/form-data。",
+  "txt_backup_error_read_backup_file_failed": "无法读取备份文件。",
+  "txt_backup_error_remote_attachment_batch_download_failed_status": "远端附件批量下载失败：HTTP {status}。",
+  "txt_backup_error_remote_attachment_download_failed_status": "远端附件下载失败：HTTP {status}。",
+  "txt_backup_error_remote_delete_failed": "远端备份删除失败。",
+  "txt_backup_error_remote_download_failed": "远端备份下载失败。",
+  "txt_backup_error_remote_download_payload_invalid": "远端备份下载请求无效。",
+  "txt_backup_error_remote_integrity_failed": "远端备份完整性检查失败。",
+  "txt_backup_error_remote_listing_failed": "远端备份列表读取失败。",
+  "txt_backup_error_remote_path_invalid": "远端备份路径无效。",
+  "txt_backup_error_remote_restore_payload_invalid": "远端还原请求无效。",
+  "txt_backup_error_remote_zip_checksum_failed": "远端备份 ZIP 校验失败。",
+  "txt_backup_error_remote_zip_size_failed": "远端备份 ZIP 大小校验失败。",
+  "txt_backup_error_retention_count_range": "备份保留数量必须在 1 到 1000 之间。",
+  "txt_backup_error_run_failed": "备份执行失败。",
+  "txt_backup_error_run_payload_invalid": "备份执行请求无效。",
+  "txt_backup_error_run_response_invalid": "备份执行响应无效。",
+  "txt_backup_error_s3_access_key_required": "请填写 S3 访问 ID。",
+  "txt_backup_error_s3_bucket_required": "请填写 S3 存储桶名称。",
+  "txt_backup_error_s3_delete_failed_status": "S3 删除失败：HTTP {status}。",
+  "txt_backup_error_s3_download_failed_status": "S3 下载失败：HTTP {status}。",
+  "txt_backup_error_s3_endpoint_required": "请填写 S3 端点 URL。",
+  "txt_backup_error_s3_endpoint_protocol": "S3 端点 URL 必须以 http:// 或 https:// 开头。",
+  "txt_backup_error_s3_existence_check_failed_status": "S3 文件存在性检查失败：HTTP {status}。",
+  "txt_backup_error_s3_listing_failed_status": "S3 列表读取失败：HTTP {status}。",
+  "txt_backup_error_s3_secret_key_required": "请填写 S3 访问密码。",
+  "txt_backup_error_s3_upload_failed_status": "S3 上传失败：HTTP {status}。",
+  "txt_backup_error_select_backup_file": "请选择备份文件。",
+  "txt_backup_error_select_backup_zip_file": "请选择备份 ZIP 文件。",
+  "txt_backup_error_settings_envelope_invalid": "备份设置加密封装无效。",
+  "txt_backup_error_settings_invalid": "备份设置无效。",
+  "txt_backup_error_settings_load_failed": "无法加载备份设置。",
+  "txt_backup_error_settings_need_reactivation": "还原后需要管理员重新激活备份设置。",
+  "txt_backup_error_settings_payload_invalid": "备份设置请求无效。",
+  "txt_backup_error_settings_repair_payload_invalid": "备份设置修复请求无效。",
+  "txt_backup_error_settings_repair_state_load_failed": "无法加载备份设置修复状态。",
+  "txt_backup_error_start_time_format": "备份开始时间必须是 HH:mm 格式。",
+  "txt_backup_error_timezone_invalid": "备份时区无效。",
+  "txt_backup_error_webdav_delete_failed_status": "WebDAV 删除失败：HTTP {status}。",
+  "txt_backup_error_webdav_directory_creation_failed_status": "WebDAV 目录创建失败：HTTP {status}。",
+  "txt_backup_error_webdav_download_failed_status": "WebDAV 下载失败：HTTP {status}。",
+  "txt_backup_error_webdav_existence_check_failed_status": "WebDAV 文件存在性检查失败：HTTP {status}。",
+  "txt_backup_error_webdav_listing_failed_status": "WebDAV 列表读取失败：HTTP {status}。",
+  "txt_backup_error_webdav_password_required": "请填写 WebDAV 密码。",
+  "txt_backup_error_webdav_path_too_deep": "WebDAV 远端备份路径过深，无法安全分批处理附件。",
+  "txt_backup_error_webdav_upload_failed_status": "WebDAV 上传失败：HTTP {status}。",
+  "txt_backup_error_webdav_url_required": "请填写 WebDAV 服务地址。",
+  "txt_backup_error_webdav_url_protocol": "WebDAV 服务地址必须以 http:// 或 https:// 开头。",
+  "txt_backup_error_webdav_username_required": "请填写 WebDAV 用户名。",
   "txt_backup_destination": "备份地点",
   "txt_backup_protocol_webdav": "WebDAV",
   "txt_backup_protocol_s3": "S3",
@@ -522,16 +592,21 @@ const zhCN: Record<string, string> = {
   "txt_server_error_account_disabled": "账号已被禁用",
   "txt_server_error_client_credentials_incorrect": "客户端 ID 或客户端密钥不正确，请重试",
   "txt_server_error_client_ip_required": "无法获取客户端 IP",
+  "txt_server_error_forbidden": "你没有权限执行此操作。",
   "txt_server_error_email_already_registered": "该邮箱已注册",
   "txt_server_error_email_password_required": "邮箱和密码不能为空",
   "txt_server_error_email_required": "邮箱不能为空",
+  "txt_server_error_invalid_password": "密码无效。",
   "txt_server_error_invalid_refresh_token": "登录状态已失效，请重新登录",
+  "txt_server_error_invalid_user_verification_token": "用户验证令牌无效。",
   "txt_server_error_invalid_request_payload": "请求内容无效",
   "txt_server_error_invite_invalid_or_expired": "邀请码无效或已过期",
   "txt_server_error_invite_required": "邀请码不能为空",
   "txt_server_error_jwt_secret_default": "JWT_SECRET 正在使用默认示例值，请修改后再继续",
   "txt_server_error_jwt_secret_missing": "JWT_SECRET 未设置",
   "txt_server_error_jwt_secret_too_short": "JWT_SECRET 至少需要 32 个字符",
+  "txt_server_error_master_password_hash_required": "需要验证主密码。",
+  "txt_server_error_master_password_or_verification_required": "需要主密码或用户验证令牌。",
   "txt_server_error_parameter_error": "请求参数错误",
   "txt_server_error_refresh_token_required": "登录状态缺失，请重新登录",
   "txt_server_error_registration_retry": "注册暂时不可用，请重试一次",
diff --git a/webapp/src/lib/i18n/locales/zh-TW.ts b/webapp/src/lib/i18n/locales/zh-TW.ts
index c561a2b..63ba0fd 100644
--- a/webapp/src/lib/i18n/locales/zh-TW.ts
+++ b/webapp/src/lib/i18n/locales/zh-TW.ts
@@ -224,6 +224,8 @@ const zhTW: Record<string, string> = {
   "txt_backup_restore_progress_remote_finalize_detail": "服務器正在執行最終校驗，校驗通過後會把已驗證的數據切換為正式數據。",
   "txt_backup_remote_loading": "正在讀取遠端備份...",
   "txt_backup_remote_cached_empty": "點擊“刷新”後讀取",
+  "txt_backup_remote_cached_empty_prefix": "點擊",
+  "txt_backup_remote_cached_empty_suffix": "後讀取",
   "txt_backup_remote_empty": "這個目錄下還沒有備份文件",
   "txt_backup_remote_folder": "文件夾",
   "txt_backup_remote_unknown_time": "未知時間",
@@ -247,6 +249,74 @@ const zhTW: Record<string, string> = {
   "txt_backup_remote_run_invalid_response": "遠端備份執行響應無效",
   "txt_backup_settings_invalid_response": "備份設置響應無效",
   "txt_backup_import_invalid_response": "備份還原響應無效",
+  "txt_backup_error_another_backup_or_restore_running": "已有備份或還原任務正在執行。",
+  "txt_backup_error_another_backup_running": "已有備份任務正在執行。",
+  "txt_backup_error_archive_upload_failed": "備份壓縮包上傳失敗。",
+  "txt_backup_error_archive_upload_verification_failed_attempts": "備份上傳校驗在 {count} 次嘗試後仍失敗：{reason}",
+  "txt_backup_error_attachment_blob_invalid": "備份附件對象無效。",
+  "txt_backup_error_attachment_blob_required": "缺少備份附件對象。",
+  "txt_backup_error_attachment_blob_not_found": "未找到備份附件對象。",
+  "txt_backup_error_attachment_download_failed": "備份附件下載失敗。",
+  "txt_backup_error_destination_invalid": "備份地點無效。",
+  "txt_backup_error_destination_limit": "最多只能保存 {count} 個備份地點。",
+  "txt_backup_error_destination_not_found": "未找到備份地點。",
+  "txt_backup_error_destination_ids_unique": "備份地點 ID 不能重複。",
+  "txt_backup_error_destination_type_invalid": "備份地點類型無效。",
+  "txt_backup_error_destination_type_unsupported": "不支持的備份地點類型。",
+  "txt_backup_error_destinations_invalid": "備份地點列表無效。",
+  "txt_backup_error_export_payload_invalid": "備份導出請求無效。",
+  "txt_backup_error_file_checksum_mismatch": "備份文件校驗值與文件名不一致。",
+  "txt_backup_error_file_required": "請選擇備份文件。",
+  "txt_backup_error_interval_hours_range": "備份間隔必須在 1 到 99 小時之間。",
+  "txt_backup_error_multipart_required": "上傳請求必須使用 multipart/form-data。",
+  "txt_backup_error_read_backup_file_failed": "無法讀取備份文件。",
+  "txt_backup_error_remote_attachment_batch_download_failed_status": "遠端附件批量下載失敗：HTTP {status}。",
+  "txt_backup_error_remote_attachment_download_failed_status": "遠端附件下載失敗：HTTP {status}。",
+  "txt_backup_error_remote_delete_failed": "遠端備份刪除失敗。",
+  "txt_backup_error_remote_download_failed": "遠端備份下載失敗。",
+  "txt_backup_error_remote_download_payload_invalid": "遠端備份下載請求無效。",
+  "txt_backup_error_remote_integrity_failed": "遠端備份完整性檢查失敗。",
+  "txt_backup_error_remote_listing_failed": "遠端備份列表讀取失敗。",
+  "txt_backup_error_remote_path_invalid": "遠端備份路徑無效。",
+  "txt_backup_error_remote_restore_payload_invalid": "遠端還原請求無效。",
+  "txt_backup_error_remote_zip_checksum_failed": "遠端備份 ZIP 校驗失敗。",
+  "txt_backup_error_remote_zip_size_failed": "遠端備份 ZIP 大小校驗失敗。",
+  "txt_backup_error_retention_count_range": "備份保留數量必須在 1 到 1000 之間。",
+  "txt_backup_error_run_failed": "備份執行失敗。",
+  "txt_backup_error_run_payload_invalid": "備份執行請求無效。",
+  "txt_backup_error_run_response_invalid": "備份執行響應無效。",
+  "txt_backup_error_s3_access_key_required": "請填寫 S3 存取 ID。",
+  "txt_backup_error_s3_bucket_required": "請填寫 S3 儲存桶名稱。",
+  "txt_backup_error_s3_delete_failed_status": "S3 刪除失敗：HTTP {status}。",
+  "txt_backup_error_s3_download_failed_status": "S3 下載失敗：HTTP {status}。",
+  "txt_backup_error_s3_endpoint_required": "請填寫 S3 端點 URL。",
+  "txt_backup_error_s3_endpoint_protocol": "S3 端點 URL 必須以 http:// 或 https:// 開頭。",
+  "txt_backup_error_s3_existence_check_failed_status": "S3 文件存在性檢查失敗：HTTP {status}。",
+  "txt_backup_error_s3_listing_failed_status": "S3 列表讀取失敗：HTTP {status}。",
+  "txt_backup_error_s3_secret_key_required": "請填寫 S3 存取密碼。",
+  "txt_backup_error_s3_upload_failed_status": "S3 上傳失敗：HTTP {status}。",
+  "txt_backup_error_select_backup_file": "請選擇備份文件。",
+  "txt_backup_error_select_backup_zip_file": "請選擇備份 ZIP 文件。",
+  "txt_backup_error_settings_envelope_invalid": "備份設置加密封裝無效。",
+  "txt_backup_error_settings_invalid": "備份設置無效。",
+  "txt_backup_error_settings_load_failed": "無法加載備份設置。",
+  "txt_backup_error_settings_need_reactivation": "還原後需要管理員重新激活備份設置。",
+  "txt_backup_error_settings_payload_invalid": "備份設置請求無效。",
+  "txt_backup_error_settings_repair_payload_invalid": "備份設置修復請求無效。",
+  "txt_backup_error_settings_repair_state_load_failed": "無法加載備份設置修復狀態。",
+  "txt_backup_error_start_time_format": "備份開始時間必須是 HH:mm 格式。",
+  "txt_backup_error_timezone_invalid": "備份時區無效。",
+  "txt_backup_error_webdav_delete_failed_status": "WebDAV 刪除失敗：HTTP {status}。",
+  "txt_backup_error_webdav_directory_creation_failed_status": "WebDAV 目錄創建失敗：HTTP {status}。",
+  "txt_backup_error_webdav_download_failed_status": "WebDAV 下載失敗：HTTP {status}。",
+  "txt_backup_error_webdav_existence_check_failed_status": "WebDAV 文件存在性檢查失敗：HTTP {status}。",
+  "txt_backup_error_webdav_listing_failed_status": "WebDAV 列表讀取失敗：HTTP {status}。",
+  "txt_backup_error_webdav_password_required": "請填寫 WebDAV 密碼。",
+  "txt_backup_error_webdav_path_too_deep": "WebDAV 遠端備份路徑過深，無法安全分批處理附件。",
+  "txt_backup_error_webdav_upload_failed_status": "WebDAV 上傳失敗：HTTP {status}。",
+  "txt_backup_error_webdav_url_required": "請填寫 WebDAV 服務地址。",
+  "txt_backup_error_webdav_url_protocol": "WebDAV 服務地址必須以 http:// 或 https:// 開頭。",
+  "txt_backup_error_webdav_username_required": "請填寫 WebDAV 用戶名。",
   "txt_backup_destination": "備份地點",
   "txt_backup_protocol_webdav": "WebDAV",
   "txt_backup_protocol_s3": "S3",
@@ -522,16 +592,21 @@ const zhTW: Record<string, string> = {
   "txt_server_error_account_disabled": "帳號已被禁用",
   "txt_server_error_client_credentials_incorrect": "客戶端 ID 或客戶端密鑰不正確，請重試",
   "txt_server_error_client_ip_required": "無法獲取客戶端 IP",
+  "txt_server_error_forbidden": "你沒有權限執行此操作。",
   "txt_server_error_email_already_registered": "該郵箱已註冊",
   "txt_server_error_email_password_required": "郵箱和密碼不能為空",
   "txt_server_error_email_required": "郵箱不能為空",
+  "txt_server_error_invalid_password": "密碼無效。",
   "txt_server_error_invalid_refresh_token": "登入狀態已失效，請重新登入",
+  "txt_server_error_invalid_user_verification_token": "用戶驗證令牌無效。",
   "txt_server_error_invalid_request_payload": "請求內容無效",
   "txt_server_error_invite_invalid_or_expired": "邀請碼無效或已過期",
   "txt_server_error_invite_required": "邀請碼不能為空",
   "txt_server_error_jwt_secret_default": "JWT_SECRET 正在使用默認示例值，請修改後再繼續",
   "txt_server_error_jwt_secret_missing": "JWT_SECRET 未設置",
   "txt_server_error_jwt_secret_too_short": "JWT_SECRET 至少需要 32 個字符",
+  "txt_server_error_master_password_hash_required": "需要驗證主密碼。",
+  "txt_server_error_master_password_or_verification_required": "需要主密碼或用戶驗證令牌。",
   "txt_server_error_parameter_error": "請求參數錯誤",
   "txt_server_error_refresh_token_required": "登入狀態缺失，請重新登入",
   "txt_server_error_registration_retry": "註冊暫時不可用，請重試一次",
diff --git a/webapp/src/styles/management.css b/webapp/src/styles/management.css
index db175e2..1c6cbac 100644
--- a/webapp/src/styles/management.css
+++ b/webapp/src/styles/management.css
@@ -443,6 +443,10 @@
   color: #64748b;
 }
 
+.backup-browser-refresh-prompt {
+  @apply inline-flex flex-wrap items-center justify-center gap-2;
+}
+
 .backup-inline-note {
   @apply m-0 mb-3 leading-[1.5];
   color: #64748b;