fix: enhance provider model menu and sidebar session selection handling (#4144)

- Updated `ProviderModelMenu.vue` to manage menu state and load provider configurations dynamically upon opening.
- Filtered provider configurations to exclude those with `enable` set to false.
- Improved session selection logic in `useSessions.ts` to ensure the currently selected session is highlighted and properly managed during navigation.

dashboard/src/components/chat/ProviderModelMenu.vue

@@ -1,5 +1,5 @@
 <template>
-    <v-menu :close-on-content-click="false" location="top">
+    <v-menu v-model="menuOpen" :close-on-content-click="false" location="top" @update:model-value="handleMenuToggle">
         <template v-slot:activator="{ props: menuProps }">
             <v-chip v-bind="menuProps" class="text-none provider-chip" variant="tonal" size="x-small">
                 <v-icon start size="14">mdi-creation</v-icon>
@@ -72,11 +72,13 @@ interface ProviderConfig {
     model: string;
     api_base?: string;
     model_metadata?: ModelMetadata;
+    enable?: boolean;
 }
 
 const providerConfigs = ref<ProviderConfig[]>([]);
 const selectedProviderId = ref('');
 const searchQuery = ref('');
+const menuOpen = ref(false);
 
 const filteredProviders = computed(() => {
     if (!searchQuery.value) {
@@ -107,7 +109,10 @@ function loadProviderConfigs() {
         params: { provider_type: 'chat_completion' }
     }).then(response => {
         if (response.data.status === 'ok') {
-            providerConfigs.value = response.data.data || [];
+            // 过滤掉 enable 为 false 的配置
+            providerConfigs.value = (response.data.data || []).filter(
+                (p: ProviderConfig) => p.enable !== false
+            );
         }
     }).catch(error => {
         console.error('获取提供商列表失败:', error);
@@ -140,6 +145,13 @@ function getCurrentSelection() {
     };
 }
 
+function handleMenuToggle(isOpen: boolean) {
+    if (isOpen) {
+        // 每次打开菜单时重新获取数据
+        loadProviderConfigs();
+    }
+}
+
 onMounted(() => {
     loadFromStorage();
     loadProviderConfigs();

dashboard/src/composables/useSessions.ts

@@ -41,7 +41,13 @@ export function useSessions(chatboxMode: boolean = false) {
                     selectedSessions.value = [pendingSessionId.value];
                     pendingSessionId.value = null;
                 }
-            } else if (!currSessionId.value && sessions.value.length > 0) {
+            } else if (currSessionId.value) {
+                // 如果当前有选中的会话，确保它在列表中并被选中
+                const session = sessions.value.find(s => s.session_id === currSessionId.value);
+                if (session) {
+                    selectedSessions.value = [currSessionId.value];
+                }
+            } else if (sessions.value.length > 0) {
                 // 默认选择第一个会话
                 const firstSession = sessions.value[0];
                 selectedSessions.value = [firstSession.session_id];
@@ -65,6 +71,10 @@ export function useSessions(chatboxMode: boolean = false) {
             router.push(`${basePath}/${sessionId}`);
             
             await getSessions();
+            
+            // 确保新创建的会话被选中高亮
+            selectedSessions.value = [sessionId];
+            
             return sessionId;
         } catch (err) {
             console.error(err);