fix: loadAgents顺序修正

templates/index.html

@@ -192,11 +192,11 @@
                 const data = await res.json();
                 agents = data.agents || [];
                 
-                renderAgentSelect();
-                
-                // 设置当前Agent
+                // 先设置当前Agent，再渲染
                 const defaultAgent = agents.find(a => a.is_default) || agents[0];
                 if (defaultAgent) currentAgentId = defaultAgent.id;
+                
+                renderAgentSelect();
             } catch (e) {
                 console.error('加载Agent失败:', e);
                 document.getElementById('agentSelect').innerHTML = '<option value="">加载失败</option>';