perf: bound Build my Today readiness checks (Closes #637)

frontend/index.html

@@ -907,6 +907,7 @@
 <script src="static/comment-next.js"></script>
 <script src="static/update-reply-read-next.js"></script>
 <script src="static/plan-today.js"></script>
+<script src="static/plan-today-readiness.js"></script>
 <script src="static/plan-today-preview.js"></script>
 <script src="static/today-sync.js"></script>
 <script src="static/today-rollover.js"></script>