always re-apply nav after catalog load (activity.start runs before async load)

plugin.js

@@ -136,8 +136,8 @@
                 comp._movies = movies;
                 console.log('[mymovies] loaded', movies.length, 'films');
                 renderMovies($(grid), movies);
-                // re-apply navigation if activity already started
-                if (comp.activity && comp.activity.ready) comp.start();
+                // re-apply navigation once cards exist (activity.start may have run before load)
+                comp.start();
             });
 
             return html;