fix: 对话选中状态增强

Yi.Ai.Vue3/src/layouts/components/ChatAside/index.vue

@@ -234,7 +234,7 @@ function toggleSidebar() {
               :load-more="handleLoadMore"
               :load-more-loading="loadMoreLoading"
               :items-style="{
-                marginLeft: '8px',
+                marginLeft: isCollapsed ? '8px' : '5px',
                 marginRight: '8px',
                 userSelect: 'none',
                 borderRadius: isCollapsed ? '12px' : '10px',
@@ -246,14 +246,18 @@ function toggleSidebar() {
                 flexDirection: isCollapsed ? 'column' : 'row',
                 position: 'relative',
                 overflow: 'hidden',
+                borderLeft: '3px solid transparent',
               }"
               :items-active-style="{
-                backgroundColor: '#fff',
-                boxShadow: '0 1px 2px rgba(0, 0, 0, 0.05)',
-                color: 'rgba(0, 0, 0, 0.85)',
+                backgroundColor: 'rgba(0, 87, 255, 0.08)',
+                boxShadow: '0 2px 8px rgba(0, 87, 255, 0.12)',
+                color: '#0057ff',
+                borderLeft: '3px solid #0057ff',
+                fontWeight: '500',
               }"
               :items-hover-style="{
                 backgroundColor: 'rgba(0, 0, 0, 0.04)',
+                borderLeft: '3px solid transparent',
               }"
               @menu-command="handleMenuCommand"
               @change="handleChange"