feat: area admin con editor tiptap, api crud e upload immagini

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/sanitize.test.ts

@@ -0,0 +1,16 @@
+import { describe, it, expect } from 'vitest';
+import { sanitizeHtml } from '../src/lib/sanitize';
+
+describe('sanitizeHtml', () => {
+  it('mantiene la formattazione consentita', () => {
+    const html = '<h2>Titolo</h2><p>Testo <strong>forte</strong> ed <em>enfasi</em></p><ul><li>voce</li></ul><blockquote>citazione</blockquote>';
+    expect(sanitizeHtml(html)).toBe(html);
+  });
+  it('rimuove script e handler', () => {
+    expect(sanitizeHtml('<p onclick="x()">ciao</p><script>alert(1)</script>')).toBe('<p>ciao</p>');
+  });
+  it('consente immagini locali e https, blocca javascript:', () => {
+    expect(sanitizeHtml('<img src="/uploads/a.jpg">')).toContain('/uploads/a.jpg');
+    expect(sanitizeHtml('<a href="javascript:alert(1)">x</a>')).toBe('<a>x</a>');
+  });
+});