feat: lazy-load security center (Closes #605)

frontend/feature-loader.js

@@ -47,7 +47,8 @@ function createFeatureLoader({ document, urls, timeoutMs = 10000 }) {
     } catch (_error) {
       if (status) {
         const label = name === 'issue-capture' ? 'Issue capture' :
-          name === 'pull-workflow' ? 'Pull workspace' : name.replace(/-/g, ' ');
+          name === 'pull-workflow' ? 'Pull workspace' :
+          name === 'security-center' ? 'Security center' : name.replace(/-/g, ' ');
         status.textContent = label + ' could not load. ' + retryLabel;
       }
       return false;