feat(legal): add structured attribution fields and publish legal gate

backend/templates/admin_dashboard.html

@@ -151,6 +151,7 @@
             </td>
             <td><span class="badge">{{ a.status }}</span></td>
             <td>
+              <div class="subtle">Legal: {{ "OK" if a.legal_checked else "offen" }}</div>
               {% if a.summary %}
               <div><strong>Summary:</strong> {{ a.summary }}</div>
               {% endif %}