LOCALHOST ONLY — does not change production pages.

1) Edit YOUR LOCAL file (not production server):
   C:\AppServ\www\srv1361159.hstgr.cloud\Game\room-lobby.html

2) Find the first <script ...> near end of file (before app-base.js).

3) Insert this line ABOVE app-base.js:

<script src="https://srv1361159.hstgr.cloud/Game/dev-local/bootstrap.js"></script>

4) Save. Ctrl+Shift+R on room-lobby.

Production https://srv1361159.hstgr.cloud/ must NOT include this script tag.

Create Room (local): same bootstrap in Create Room\index.html if needed.