feat: add master password hint functionality

- Updated user model to include masterPasswordHint.
- Modified sync handler to return masterPasswordHint.
- Implemented password hint retrieval in public API.
- Enhanced user profile management to allow updating of password hint.
- Added UI components for displaying and editing password hint.
- Updated localization files for new password hint strings.
- Improved rate limiting for sensitive public requests.
- Adjusted database schema to accommodate master password hint.

webapp/src/components/ConfirmDialog.tsx

@@ -10,6 +10,7 @@ interface ConfirmDialogProps {
   confirmText?: string;
   cancelText?: string;
   danger?: boolean;
+  hideCancel?: boolean;
   onConfirm: () => void;
   onCancel: () => void;
   children?: ComponentChildren;
@@ -37,10 +38,12 @@ export default function ConfirmDialog(props: ConfirmDialogProps) {
           <Check size={14} className="btn-icon" />
           {props.confirmText || t('txt_yes')}
         </button>
-        <button type="button" className="btn btn-secondary dialog-btn" onClick={props.onCancel}>
-          <X size={14} className="btn-icon" />
-          {props.cancelText || t('txt_no')}
-        </button>
+        {!props.hideCancel && (
+          <button type="button" className="btn btn-secondary dialog-btn" onClick={props.onCancel}>
+            <X size={14} className="btn-icon" />
+            {props.cancelText || t('txt_no')}
+          </button>
+        )}
         {props.afterActions}
       </form>
     </div>