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/pages/ClinicDetailPage.test.tsx

@@ -24,7 +24,7 @@ vi.mock('../components/ClinicDoctorsManager', () => ({
   default: () => <div data-testid="doctors-manager" />,
 }));
 
-import { Routes, Route } from 'react-router-dom';
+import { Routes, Route } from 'react-router';
 import { api } from '../lib/api';
 import { useAuthStore } from '../stores/authStore';
 import ClinicDetailPage from './ClinicDetailPage';