fix: auto-retry on AgentCore cold start for Portal Chat + Playground

Portal Chat and Playground both now auto-retry once after 3s when the
first request fails (AgentCore cold start ~25s). Shows 'Agent is warming
up' instead of error message. Also fixed Playground retry bug where
inputValue was already cleared before the retry fired.

Author: JiaDe

enterprise/admin-console/src/pages/Playground.tsx

@@ -33,35 +33,36 @@ export default function Playground() {
   const handleSend = () => {
     if (!inputValue.trim()) return;
     const now = new Date().toLocaleTimeString();
-    const userMsg: ChatMessage = { role: 'user', content: inputValue, timestamp: now };
+    const msg = inputValue.trim();
+    const userMsg: ChatMessage = { role: 'user', content: msg, timestamp: now };
     setMessages(prev => [...prev, userMsg]);
     setInputValue('');
 
-    sendMut.mutate({ tenant_id: tenantId, message: inputValue, mode }, {
+    sendMut.mutate({ tenant_id: tenantId, message: msg, mode }, {
       onSuccess: (data) => {
         const assistantMsg: ChatMessage = { role: 'assistant', content: data.response, timestamp: new Date().toLocaleTimeString() };
         setMessages(prev => [...prev, assistantMsg]);
         setLastPlanE(data.plan_e);
       },
       onError: (err) => {
         const errMsg = mode === 'live'
-          ? '⚠️ AgentCore cold start may take ~25s on first request. Retrying automatically...'
+          ? '⏳ Agent is warming up (cold start ~25s). Retrying...'
           : '⚠️ Error communicating with agent';
         setMessages(prev => [...prev, { role: 'assistant', content: errMsg, timestamp: new Date().toLocaleTimeString() }]);
         // Auto-retry once for live mode (cold start)
         if (mode === 'live') {
           setTimeout(() => {
-            sendMut.mutate({ tenant_id: tenantId, message: inputValue, mode }, {
+            sendMut.mutate({ tenant_id: tenantId, message: msg, mode }, {
               onSuccess: (data) => {
                 const retryMsg: ChatMessage = { role: 'assistant', content: data.response, timestamp: new Date().toLocaleTimeString() };
                 setMessages(prev => [...prev, retryMsg]);
                 setLastPlanE(data.plan_e);
               },
               onError: () => {
-                setMessages(prev => [...prev, { role: 'assistant', content: '⚠️ AgentCore still starting up. Please try again in 30 seconds.', timestamp: new Date().toLocaleTimeString() }]);
+                setMessages(prev => [...prev, { role: 'assistant', content: 'Agent is still starting up. Please try again in ~30 seconds.', timestamp: new Date().toLocaleTimeString() }]);
               },
             });
-          }, 5000);
+          }, 3000);
         }
       },
     });

enterprise/admin-console/src/pages/portal/Chat.tsx

@@ -61,11 +61,26 @@ export default function PortalChat() {
         timestamp: new Date().toISOString(), source: resp.source, model: resp.model,
       }]);
     } catch (e: any) {
+      // Auto-retry once — AgentCore cold start takes ~25s, first request often fails
       setMessages(prev => [...prev, {
         id: Date.now() + 1, role: 'assistant',
-        content: `Sorry, I encountered an error: ${e.message}. Please try again.`,
-        timestamp: new Date().toISOString(), source: 'error',
+        content: '⏳ Agent is warming up (first request). Retrying...',
+        timestamp: new Date().toISOString(), source: 'warmup',
       }]);
+      try {
+        await new Promise(r => setTimeout(r, 3000));
+        const retry = await api.post<{ response: string; agentName?: string; source?: string; model?: string }>('/portal/chat', { message: userMsg.content });
+        setMessages(prev => [...prev, {
+          id: Date.now() + 2, role: 'assistant', content: retry.response,
+          timestamp: new Date().toISOString(), source: retry.source, model: retry.model,
+        }]);
+      } catch {
+        setMessages(prev => [...prev, {
+          id: Date.now() + 2, role: 'assistant',
+          content: 'Agent is still starting up. Please try again in ~30 seconds.',
+          timestamp: new Date().toISOString(), source: 'error',
+        }]);
+      }
     } finally {
       setSending(false);
     }