Use absolute coin counts in perp-options points mode.

Treat 2:4 as 2 perp + 4 option coins instead of normalizing to 1:2, and disable embed page caching so hub iframe picks up trade UI updates.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/instance/templates/embed_shell.html

@@ -168,7 +168,7 @@ window.__INSTANCE_DISPLAY__ = {{ display | tojson }};
 </script>
 <script src="/static/instance_settings_prefs.js?v=16"></script>
 <script src="/static/instance_live.js?v=6"></script>
-<script src="/static/instance_embed.js?v=29"></script>
+<script src="/static/instance_embed.js?v=30"></script>
 <script src="/static/instance_mobile_nav.js?v=2"></script>
 </body>
 </html>