Fix double POST on open position in embed shell mode.

Embed capture-phase form handler and allowManualOrderSubmit both submitted /add_order; skip custom forms and use a single fetch reload path.

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

embed_templates/embed_boot_scripts.html

@@ -889,6 +889,10 @@ function cancelExchangeTpsl(orderId, role){
 
 function allowManualOrderSubmit(form){
     form.dataset.rrOk = "1";
+    if(document.body && document.body.getAttribute("data-embed-shell") === "1" && window.InstanceEmbed && window.InstanceEmbed.postFormAndReload){
+        window.InstanceEmbed.postFormAndReload(form, "开仓提交中…");
+        return;
+    }
     if(window.FormSubmitGuard){
         if(FormSubmitGuard.isLocked(form)){
             FormSubmitGuard.setSubmitLabel(form, "开仓提交中…");

embed_templates/embed_shell.html

@@ -115,6 +115,6 @@
 <script src="/static/manual_order_rr_preview.js?v=3"></script>
 <script src="/static/key_monitor_form.js?v=1"></script>
 {% include 'embed_boot_scripts.html' %}
-<script src="/static/instance_embed.js?v=3"></script>
+<script src="/static/instance_embed.js?v=4"></script>
 </body>
 </html>