feat: update charity project assets, add livestream media, and clean up temporary migration scripts

.temp/test-iframe.html

@@ -0,0 +1,10 @@
+<style>
+  .tabbed-media-content-media-item { width: 100%; aspect-ratio: 16/9; position: relative; display: flex; align-items: center; justify-content: center; background: red;}
+  .tabbed-media-content-media-item .f--video-embed { display: none; width: 100%; height: 100%; position: absolute; top: 0; left: 0; }
+  .tabbed-media-content-media-item .f--video-embed iframe { width: 100%; height: 100%; }
+</style>
+<div class="tabbed-media-content-media-item">
+  <div class="f--video-embed" style="display:block;">
+    <iframe title="YouTube video player" src="https://www.youtube.com/embed/j63kT9Bjrb4?si=N5JwIcuRn-iRxkYu" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+  </div>
+</div>