Fix options chain headers mixing list and T-view columns.

Thead rows used a .hidden class with no CSS rule on instance pages, so both header sets stayed visible.

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

lib/common/static/instance_theme.css

@@ -3084,6 +3084,10 @@ html[data-theme="light"] .settings-side-export-label {
   z-index: 1;
   background: rgba(18, 24, 38, 0.98);
 }
+/* 列表 / T 型表头互斥:类名 hidden 需显式隐藏(实例页无全局 .hidden) */
+.options-strike-table thead tr.hidden {
+  display: none !important;
+}
 .options-strike-table {
   width: 100%;
   border-collapse: collapse;

lib/common/static/options_panel.js

@@ -291,9 +291,18 @@
     const headList = document.getElementById("opt-strike-head-list");
     const headT = document.getElementById("opt-strike-head-t");
     const headTCols = document.getElementById("opt-strike-head-t-cols");
-    if (headList) headList.classList.toggle("hidden", isT);
-    if (headT) headT.classList.toggle("hidden", !isT);
-    if (headTCols) headTCols.classList.toggle("hidden", !isT);
+    if (headList) {
+      headList.classList.toggle("hidden", isT);
+      headList.hidden = isT;
+    }
+    if (headT) {
+      headT.classList.toggle("hidden", !isT);
+      headT.hidden = !isT;
+    }
+    if (headTCols) {
+      headTCols.classList.toggle("hidden", !isT);
+      headTCols.hidden = !isT;
+    }
     const wrap = document.getElementById("opt-strike-table-wrap");
     if (wrap) wrap.classList.toggle("options-strike-table-wrap--t", isT);
     const table = document.getElementById("opt-strike-table");