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/AppointmentActions.test.tsx

@@ -16,8 +16,8 @@ const patch = api.patch as ReturnType<typeof vi.fn>;
 const post = api.post as ReturnType<typeof vi.fn>;
 
 const navigate = vi.fn();
-vi.mock('react-router-dom', async () => ({
-  ...(await vi.importActual<typeof import('react-router-dom')>('react-router-dom')),
+vi.mock('react-router', async () => ({
+  ...(await vi.importActual<typeof import('react-router')>('react-router')),
   useNavigate: () => navigate,
 }));