chore(align): sync Git with running container as authoritative source

One-time alignment to close drift between the running container
(qihu-aiflow / image qihuaiflow:with-deps) and this Git repository.
Container hotfixes previously persisted only via `docker commit` are now
captured in Git so Git becomes the single source of truth.

Backend:
- chat_service.py: accumulated fixes incl. EigenFlux README guidance
- chat_context.py / chat_media.py: URL/web-repo context injection
- api/url_reader.py: NEW SSRF-safe web/README reader (Issue #725)
- skills_admin.py & Skills.tsx: 14-scene capability unification
- pgvector_search.py, orchestrator.py, platform_knowledge.py,
  market.py, admin/models.py: drift sync

Frontend:
- ChatPage.tsx: collapsible AI think/act block (Issue #724)
- MarketPage / EvolutionDashboard / TokenDashboard styling sync

Migrations:
- 018_normalize_marketapp_scene.sql: fixed capability allowlist
  (prevents capability wipe on restart)

Alignment performed 2026-07-23 16:04:25. No deletions; secrets/venv/node_modules/
caches were not touched (tracked-source-only copy).

frontend/src/pages/front/ChatPage.tsx

@@ -12,6 +12,25 @@ import mermaid from 'mermaid';
 
 mermaid.initialize({ startOnLoad: false, theme: 'default' });
 
+// ===== AI 回复异常检测 =====
+const AI_ERROR_PATTERNS = [
+  'AI模型调用失败',
+  'AI服务暂时不可用',
+  'AI模型返回了空响应',
+  'AI模型已处理工具调用结果',
+  '该模型缺少API密钥或端点配置',
+  '请选择一个已配置的AI模型',
+  '请先在后台管理-大模型库配置默认对话模型',
+  '⚠️ 多 Agent 编排执行失败',
+  '⚠️ 外部 Agent 调用失败',
+  '编排未产生内容',
+  '外部 Agent 未返回内容',
+];
+function isAiError(content: string): boolean {
+  if (!content) return false;
+  return AI_ERROR_PATTERNS.some(p => content.includes(p));
+}
+
 // ===== Enhanced Markdown Renderer =====
 // 媒体(图片/视频)以受限缩略图呈现，并提供下载(格式+尺寸)选项
 import { renderMarkdownToHtml, MediaInfo } from '@/utils/markdown';
@@ -524,6 +543,8 @@ const ChatPage: React.FC = () => {
   const [chatModels, setChatModels] = useState<any[]>([]);
   const [inputValue, setInputValue] = useState('');
   const [sending, setSending] = useState(false);
+  const [sendingTimeout, setSendingTimeout] = useState(false);
+  const sendingTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
   const [conversations, setConversations] = useState<Conversation[]>([]);
   const [messages, setMessages] = useState<Message[]>([]);
   const [loadingConversations, setLoadingConversations] = useState(true);
@@ -903,6 +924,12 @@ const ChatPage: React.FC = () => {
   const sendText = async (content: string) => {
     if (!content.trim() || sending || !selectedConversation) return;
     setSending(true);
+    setSendingTimeout(false);
+    // 60s 超时警告
+    if (sendingTimerRef.current) clearTimeout(sendingTimerRef.current);
+    sendingTimerRef.current = setTimeout(() => {
+      setSendingTimeout(true);
+    }, 60000);
 
     // Add user message optimistically
     const tempUserMsg: Message = {
@@ -988,11 +1015,14 @@ const ChatPage: React.FC = () => {
         }).catch(() => {});
       }
     } catch (err: any) {
+      if (sendingTimerRef.current) { clearTimeout(sendingTimerRef.current); sendingTimerRef.current = null; }
       // Remove optimistic message on error
       setMessages(prev => prev.filter(m => m.id !== tempUserMsg.id));
       alert('发送失败: ' + (err.message || err.detail || '未知错误'));
     } finally {
+      if (sendingTimerRef.current) { clearTimeout(sendingTimerRef.current); sendingTimerRef.current = null; }
       setSending(false);
+      setSendingTimeout(false);
       inputRef.current?.focus();
     }
   };
@@ -1248,6 +1278,19 @@ const ChatPage: React.FC = () => {
                         data={clarify}
                         onChoose={(opt: any) => sendText(`${opt.medium}：${clarify.prompt}`)}
                       />
+                    ) : msg.role === 'assistant' && isAiError(msg.content) ? (
+                      <div className="ai-error-bubble">
+                        <div className="ai-error-icon">⚠️</div>
+                        <div className="ai-error-text">
+                          <MarkdownContent content={msg.content} />
+                        </div>
+                        <button className="ai-error-retry" onClick={() => {
+                          setMessages(prev => prev.filter(m => m.id !== msg.id));
+                          const msgsAfterFilter = messages.filter(m => m.id !== msg.id);
+                          const lastUser = [...msgsAfterFilter].reverse().find(m => m.role === 'user');
+                          if (lastUser) sendText(lastUser.content);
+                        }}>🔄 重试</button>
+                      </div>
                     ) : msg.role === 'assistant' ? (
                       <MarkdownContent content={msg.content} />
                     ) : (
@@ -1315,9 +1358,18 @@ const ChatPage: React.FC = () => {
               )}
               {sending && (
                 <div className="message-row assistant">
-                  <div className="message-bubble assistant" style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
+                  <div className={`message-bubble assistant${sendingTimeout ? ' ai-sending-timeout' : ''}`} style={{ display: 'flex', alignItems: 'center', gap: 8 }}>
                     <IconSpinner />
-                    <span>思考中...</span>
+                    <span>{sendingTimeout ? '⏳ 响应时间较长，AI 仍在处理中...' : '思考中...'}</span>
+                    {sendingTimeout && (
+                      <button className="ai-cancel-btn" onClick={() => {
+                        setSending(false);
+                        setSendingTimeout(false);
+                        if (sendingTimerRef.current) clearTimeout(sendingTimerRef.current);
+                      }} title="取消等待" style={{ marginLeft: 12, padding: '2px 8px', fontSize: 12, cursor: 'pointer', background: 'var(--color-bg-tertiary)', border: '1px solid var(--color-border)', borderRadius: 4, color: 'var(--color-text-secondary)' }}>
+                        取消
+                      </button>
+                    )}
                   </div>
                 </div>
               )}