[ice] session persistence: skip name modal when voter already stored in localStorage

public/index.html

@@ -746,6 +746,8 @@
 
     if (state.voterName) {
       applyVoterName(state.voterName);
+      // Session persists — skip name modal
+      document.getElementById('nameModal').classList.add('hidden');
     }
 
     // If view=results, skip name modal and go to results tab