릴리스: v1.4.36 프리뷰 레일과 복사 흐름 정리

frontend/src/App.vue

@@ -452,7 +452,21 @@ function reloadApp() {
     </template>
     <template v-else-if="isPreviewMode">
       <main class="appMain appMain--preview">
-        <RouterView />
+        <div class="previewShell">
+          <div class="previewShell__main">
+            <RouterView />
+          </div>
+          <aside class="previewShell__rail">
+            <div class="previewShell__railInner">
+              <RightRailAd class-name="previewShell__ad" />
+            </div>
+            <div class="previewShell__footer">
+              <span>Copyright © 2026 </span>
+              <a :href="RIGHT_RAIL_COPYRIGHT_URL" target="_blank" rel="noreferrer">zenn</a>
+              <span>. All rights reserved.</span>
+            </div>
+          </aside>
+        </div>
       </main>
     </template>
     <template v-else>
@@ -1224,6 +1238,43 @@ function reloadApp() {
   padding: 0;
 }
 
+.previewShell {
+  min-height: 100dvh;
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) 325px;
+}
+
+.previewShell__main {
+  min-width: 0;
+}
+
+.previewShell__rail {
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  justify-content: space-between;
+  gap: 20px;
+  padding: 16px 18px 20px;
+  border-left: 1px solid var(--theme-border);
+  background: var(--theme-rail-bg);
+}
+
+.previewShell__railInner {
+  display: grid;
+  gap: 16px;
+}
+
+.previewShell__footer {
+  font-size: 10px;
+  line-height: 1.5;
+  color: var(--theme-text-faint);
+}
+
+.previewShell__footer a {
+  color: #00ffff;
+  text-decoration: none;
+}
+
 .workspace {
   display: grid;
   grid-template-rows: 56px minmax(0, 1fr);
@@ -1835,6 +1886,14 @@ function reloadApp() {
 }
 
 @media (max-width: 1200px) {
+  .previewShell {
+    grid-template-columns: 1fr;
+  }
+
+  .previewShell__rail {
+    display: none;
+  }
+
   .guideModal__dialog {
     grid-template-columns: 1fr;
     height: min(860px, calc(100dvh - 40px));

frontend/src/views/TierEditorView.vue

@@ -114,7 +114,7 @@ const untitledWarning = computed(
     '제목 없이 저장된 티어표는 무분별한 도배 방지를 위해 관리자에 의해 임의 삭제될 수 있어요.'
 )
 const canFavorite = computed(() => !!auth.user && !isNewTierList.value && !canEdit.value)
-const canDuplicate = computed(() => !!auth.user && !isNewTierList.value && !canEdit.value)
+const canDuplicate = computed(() => !!auth.user && hasSavedTierList.value)
 const copiedFromLabel = computed(() => {
   if (!sourceTierListId.value) return ''
   const parts = []