添加会话模型和API Key配置功能

- 在模型模块中新增会话开关状态字段，支持会话模型的管理。
- 更新模型选择器，增加系统模型的API Key配置弹窗，提升用户体验。
- 优化错误处理逻辑，确保接口错误由全局拦截器处理，减少冗余提示。
- 更新相关样式以增强界面可读性和美观性。

src/components/skill/NodeSkillSelector.vue

@@ -152,9 +152,7 @@ const fetchSkillList = async () => {
 	try {
 		const params = { pageNum: pagination.pageNum, pageSize: pagination.pageSize, keyword: searchParams.keyword || undefined };
 		const res =
-			activeTab.value === 'system'
-				? await getSkillList(params, { errorMode: 'message' })
-				: await getUserSkilllistUser(params, { errorMode: 'message' });
+			activeTab.value === 'system' ? await getSkillList(params) : await getUserSkilllistUser(params);
 		skillList.value = res.data?.list || [];
 		pagination.total = res.data?.total || 0;
 	} catch (error) {

src/components/skill/SkillSelector.vue

@@ -97,7 +97,7 @@ const fetchSkillList = async () => {
 	loading.value = true;
 	try {
 		const params = { pageNum: pagination.pageNum, pageSize: pagination.pageSize, keyword: searchParams.keyword || undefined };
-		const res = await getUserSkilllistUser(params, { errorMode: 'message' });
+		const res = await getUserSkilllistUser(params);
 		skillList.value = res.data?.list || [];
 		pagination.total = res.data?.total || 0;
 	} catch (error) {