Open instance in new tab as full page, not embed shell.

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

manual_trading_hub/static/app.js

@@ -418,7 +418,7 @@
     const next = nextPath || "/";
     const q = new URLSearchParams({ exchange_id: String(exchangeId), next });
     if (options.embed) q.set("embed", "1");
-    if (globalThis.HubTheme && typeof HubTheme.get === "function") {
+    if (options.embed && globalThis.HubTheme && typeof HubTheme.get === "function") {
       q.set("hub_theme", HubTheme.get());
     }
     const r = await apiFetch("/api/instance/open-url?" + q.toString());
@@ -456,7 +456,7 @@
     try {
       const embedded = isHubEmbedded();
       const url = await fetchInstanceOpenUrl(exchangeId, next, {
-        embed: embedded || !newTab,
+        embed: !newTab,
       });
       if (newTab) {
         window.open(url, "_blank", "noopener");