가상매매 툴바 2라인으로 나는 문제 수정

frontend/src/styles/builderPageShell.css

@@ -49,35 +49,64 @@
   align-self: center;
 }
 
-/* 가상투자 — 타이틀바 3열 (좌측패널폭 | 세션설정 | 뷰옵션) */
+/* 가상투자 — 타이틀·세션·뷰 옵션 한 줄 (좁은 해상도에서 2줄 줄바꿈 방지) */
 .bps-header--vtd {
-  display: grid;
-  grid-template-columns:
-    calc(var(--bps-left-width, 380px) + var(--bps-left-handle, 16px) + calc(var(--bps-left-open, 1) * var(--bps-splitter-w, 5px)))
-    minmax(0, 1fr)
-    auto;
+  display: flex;
+  flex-wrap: nowrap;
   align-items: center;
-  gap: 8px 12px;
-  padding: 8px 18px;
-  min-height: 48px;
+  gap: 8px 10px;
+  padding: 6px 14px;
+  min-height: 44px;
+  overflow: hidden;
 }
 
 .bps-header--vtd .bps-header-left {
+  flex: 0 0 auto;
   min-width: 0;
+  max-width: min(28vw, 200px);
   overflow: hidden;
 }
 
+.bps-header--vtd .bps-title {
+  font-size: 1rem;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.bps-header--vtd .bps-subtitle {
+  white-space: nowrap;
+}
+
 .bps-header--vtd .bps-header-center {
   display: flex;
   align-items: center;
+  flex: 1 1 auto;
   min-width: 0;
-  justify-self: stretch;
+  overflow-x: auto;
+  overflow-y: hidden;
+  -webkit-overflow-scrolling: touch;
+  scrollbar-width: none;
+}
+
+.bps-header--vtd .bps-header-center::-webkit-scrollbar {
+  display: none;
 }
 
 .bps-header--vtd .bps-header-actions {
-  justify-self: end;
-  flex-shrink: 0;
+  display: flex;
+  flex-wrap: nowrap;
+  align-items: center;
+  flex: 0 0 auto;
   min-width: 0;
+  overflow-x: auto;
+  overflow-y: hidden;
+  -webkit-overflow-scrolling: touch;
+  scrollbar-width: none;
+}
+
+.bps-header--vtd .bps-header-actions::-webkit-scrollbar {
+  display: none;
 }
 
 .bps-header--vtd .header-toolbar-divider {