feat: add BlogBodySanitizer for HTML sanitization on article save

- Implemented BlogBodySanitizer to clean HTML content before saving articles, ensuring security against XSS attacks.
- Added tests for BlogBodySanitizer to verify that unsafe tags and attributes are stripped from the content.
- Introduced ApiLeastPrivilegeTest to ensure that unauthorized users cannot access sensitive API routes, maintaining strict access control.

assets/admin/components/InvoiceSummaryModal.tsx

@@ -1,5 +1,5 @@
 import { useQuery } from '@tanstack/react-query';
-import { Link } from 'react-router-dom';
+import { Link } from 'react-router';
 import { api } from '../lib/api';
 import type { ApiResponse } from '../lib/api';
 import { useAuthStore } from '../stores/authStore';