릴리스: v1.3.92 왼쪽 네비 활성 배경 애니메이션 추가

frontend/src/App.vue

@@ -67,6 +67,7 @@ const leftNavItems = computed(() => {
   ]
   return items.filter((item) => !item.requiresAuth || (authReady.value && auth.user))
 })
+const activeLeftNavIndex = computed(() => leftNavItems.value.findIndex((item) => isRouteActive(item.path)))
 const showRightRailAction = computed(() => false)
 const showSettingsGuideButton = computed(() => route.name === 'profile')
 const guideSteps = [
@@ -446,7 +447,12 @@ function submitGlobalSearch() {
           <input v-model="searchQuery" class="searchStub__input" type="search" :placeholder="leftRailCollapsed ? '' : leftRailSearchPlaceholder" />
         </form>
 
-        <nav class="leftNav">
+        <nav
+          class="leftNav"
+          :class="{ 'leftNav--hasActive': activeLeftNavIndex >= 0 }"
+          :style="{ '--left-nav-active-index': String(Math.max(activeLeftNavIndex, 0)) }"
+        >
+          <span class="leftNav__indicator" aria-hidden="true"></span>
           <RouterLink
             v-for="item in leftNavItems"
             :key="item.key"
@@ -911,19 +917,45 @@ function submitGlobalSearch() {
 }
 
 .leftNav {
+  --left-nav-gap: 8px;
+  --left-nav-item-height: 50px;
+  position: relative;
   display: grid;
-  gap: 8px;
+  gap: var(--left-nav-gap);
+  isolation: isolate;
+}
+
+.leftNav__indicator {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  height: var(--left-nav-item-height);
+  border-radius: 14px;
+  background: var(--theme-surface-soft-3);
+  transform: translateY(calc(var(--left-nav-active-index, 0) * (var(--left-nav-item-height) + var(--left-nav-gap))));
+  transition: transform 240ms ease, opacity 200ms ease;
+  opacity: 0;
+  z-index: 0;
+  pointer-events: none;
+}
+
+.leftNav--hasActive .leftNav__indicator {
+  opacity: 1;
 }
 
 .leftNav__item {
+  position: relative;
   display: flex;
   align-items: center;
+  min-height: var(--left-nav-item-height);
   gap: 12px;
   padding: 11px 12px;
   border-radius: 14px;
   color: var(--theme-text-muted);
   text-decoration: none;
   transition: background 180ms ease, color 180ms ease, transform 180ms ease;
+  z-index: 1;
 }
 
 .leftNav__label {
@@ -936,7 +968,6 @@ function submitGlobalSearch() {
 
 .leftNav__item--active,
 .leftNav__item.router-link-active {
-  background: var(--theme-surface-soft-3);
   color: var(--theme-text-strong);
 }
 
@@ -999,7 +1030,7 @@ function submitGlobalSearch() {
 }
 
 .appShell--leftCollapsed .leftNav {
-  gap: 10px;
+  --left-nav-gap: 10px;
 }
 
 .appShell--leftCollapsed .leftNav__item {