feat: artist concerts via Bandsintown — button + modal with ticket links

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

index.html

@@ -936,6 +936,17 @@
   </div>
 </div>
 
+<!-- EVENTS MODAL -->
+<div class="modal-overlay" id="events-modal" onclick="if(event.target===this)closeEventsModal()">
+  <div class="modal events-modal">
+    <div class="events-modal-header">
+      <div id="events-modal-title" class="events-modal-title"></div>
+      <button class="events-modal-close" onclick="closeEventsModal()">✕</button>
+    </div>
+    <div id="events-modal-list" class="events-modal-list"></div>
+  </div>
+</div>
+
 <!-- SONG INFO MODAL -->
 <div class="info-modal" id="info-modal">
   <div class="inner">