feat: options UI scroll layout, stats card, funding balance, and cross-account transfer

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

lib/common/static/instance_theme.css

@@ -2356,8 +2356,16 @@ html[data-theme="light"] .settings-export-link {
 }
 .options-strike-table-wrap {
   overflow-x: auto;
+  overflow-y: auto;
+  max-height: 352px;
   margin-top: 8px;
 }
+.options-strike-table thead th {
+  position: sticky;
+  top: 0;
+  z-index: 1;
+  background: rgba(18, 24, 38, 0.98);
+}
 .options-strike-table {
   width: 100%;
   border-collapse: collapse;
@@ -2462,7 +2470,68 @@ html[data-theme="light"] .settings-export-link {
   display: grid;
   grid-template-columns: 1.15fr 0.85fr;
   gap: 16px;
-  align-items: start;
+  align-items: stretch;
+}
+.options-order-card,
+.options-pos-card-wrap {
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+}
+.options-pos-stack {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  min-height: 0;
+}
+.options-pos-subcard {
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+}
+.options-pos-subcard h3 {
+  margin: 0 0 8px;
+  font-size: 0.95rem;
+  font-weight: 600;
+}
+.options-pos-live-pane {
+  flex: 1;
+  min-height: 100px;
+  max-height: 220px;
+  overflow-y: auto;
+}
+.options-pos-stats-card {
+  flex-shrink: 0;
+}
+.options-stats-grid {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 16px 24px;
+}
+.options-stat-item {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+.options-stat-item .k {
+  font-size: 0.78rem;
+  opacity: 0.7;
+}
+.options-stat-item .v {
+  font-size: 1.1rem;
+  font-weight: 600;
+}
+.options-pos-history-card {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+}
+.options-history-table-wrap {
+  flex: 1;
+  overflow-y: auto;
+  min-height: 120px;
 }
 @media (max-width: 1100px) {
   .options-dual-grid {