fix: preserve deep-link anchors on privacy/terms pages

Scroll-to-top now checks window.location.hash first, so URLs
like /privacy#section jump to the anchor instead of being
overridden.

Author: ayoub3bidi

src/components/LegalDocument.jsx

@@ -18,7 +18,9 @@ import LanguageSwitcher from './LanguageSwitcher';
  */
 function LegalDocument({ title, lastUpdated, sections }) {
   useEffect(() => {
-    window.scrollTo(0, 0);
+    if (!window.location.hash) {
+      window.scrollTo(0, 0);
+    }
   }, []);
 
   return (

src/components/LegalDocument.test.jsx

@@ -68,6 +68,18 @@ describe('LegalDocument', () => {
     expect(screen.getByTestId('legal-footer')).toBeInTheDocument();
   });
 
+  it('scrolls to top when no hash fragment is present', () => {
+    renderLegalDocument();
+    expect(window.scrollTo).toHaveBeenCalledWith(0, 0);
+  });
+
+  it('preserves scroll position when a hash fragment is present', () => {
+    window.location.hash = '#intro';
+    renderLegalDocument();
+    expect(window.scrollTo).not.toHaveBeenCalled();
+    window.location.hash = '';
+  });
+
   it('links back to the home page', () => {
     renderLegalDocument();