feat(h5): show rotating loading tips during agent-run execution

Surface backend loading_tip SSE events in chat UI with shared tip pool
and styles for long-running TKMind 智趣 tasks.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/ChatView.tsx

@@ -198,6 +198,7 @@ export function ChatView({
     error,
     notice,
     pendingTool,
+    taskLoadingTip,
     submit,
     stop,
     approveTool,
@@ -577,6 +578,7 @@ export function ChatView({
           onBalanceUpdate={(nextBalance) => completeRecharge(nextBalance)}
           onGrantedSkillsUpdate={onGrantedSkillsUpdate}
           onOpenRecharge={() => openRecharge(false)}
+          taskLoadingTip={taskLoadingTip}
           onSubmit={(text, imageUrls, previewImageUrls, options) =>
             void submit(
               text,

src/components/MessageList.tsx

@@ -145,7 +145,7 @@ function isToolOnlyAssistantMessage(message: Message) {
   );
 }
 
-function TypingBubble() {
+function TypingBubble({ tip }: { tip?: string | null }) {
   return (
     <div className="msg-bubble msg-bubble-assistant msg-typing">
       <span className="typing-dots">
@@ -153,6 +153,7 @@ function TypingBubble() {
         <span />
         <span />
       </span>
+      {tip ? <p className="msg-typing-tip">{tip}</p> : null}
     </div>
   );
 }
@@ -324,6 +325,7 @@ function MessageRow({
   compact = false,
   activeToolMessage = false,
   showInlineTyping = false,
+  typingTip = null,
   memoryRecallByMessageId = {},
   messageIndex = 0,
 }: {
@@ -341,6 +343,7 @@ function MessageRow({
   compact?: boolean;
   activeToolMessage?: boolean;
   showInlineTyping?: boolean;
+  typingTip?: string | null;
   memoryRecallByMessageId?: Record<string, { count: number; previews: string[] }>;
   messageIndex?: number;
 }) {
@@ -362,7 +365,7 @@ function MessageRow({
         <TKMindAvatar />
         <div className="msg-content">
           {showInlineTyping ? (
-            <TypingBubble />
+            <TypingBubble tip={typingTip} />
           ) : (
             <>
               <ToolBadge message={message} active={activeToolMessage} />
@@ -537,6 +540,7 @@ export function MessageList({
   publishUsername,
   compact = false,
   memoryRecallByMessageId = {},
+  typingTip = null,
 }: {
   messages: Message[];
   streaming: boolean;
@@ -549,6 +553,7 @@ export function MessageList({
   publishUsername?: string;
   compact?: boolean;
   memoryRecallByMessageId?: Record<string, { count: number; previews: string[] }>;
+  typingTip?: string | null;
 }) {
   const { avatarUrl } = useUserAvatar();
   const renderableMessages = messages.filter(shouldShowChatMessage);
@@ -605,6 +610,7 @@ export function MessageList({
               compact={compact}
               activeToolMessage={message === activeToolMessage}
               showInlineTyping={showEndTyping && message === inlineTypingMessage}
+              typingTip={showEndTyping && message === inlineTypingMessage ? typingTip : null}
               memoryRecallByMessageId={memoryRecallByMessageId}
               messageIndex={index}
             />
@@ -615,7 +621,7 @@ export function MessageList({
         <div className="msg-row msg-row-assistant" role="status" aria-live="polite" aria-label="助手正在回复">
           <TKMindAvatar />
           <div className="msg-content">
-            <TypingBubble />
+            <TypingBubble tip={typingTip} />
           </div>
         </div>
       )}

src/components/SpaceChatPanel.tsx

@@ -58,7 +58,7 @@ export function SpaceChatPanel({
     uploadChatAttachment,
     retryConnect,
   } = chat;
-  const { capabilities, grantedSkills, followAgentRun, goalRunEnabled, balanceCents } = mainChat;
+  const { capabilities, grantedSkills, followAgentRun, goalRunEnabled, balanceCents, taskLoadingTip } = mainChat;
   const [localGrantedSkills, setLocalGrantedSkills] = useState<string[] | undefined>();
   const effectiveGrantedSkills = localGrantedSkills ?? grantedSkills;
 
@@ -180,6 +180,7 @@ export function SpaceChatPanel({
         onBalanceUpdate={(nextBalance) => completeRecharge(nextBalance)}
         onGrantedSkillsUpdate={handleGrantedSkillsUpdate}
         onOpenRecharge={() => openRecharge(false)}
+        taskLoadingTip={taskLoadingTip}
         onSubmit={(text, imageUrls, previewImageUrls, options) =>
           chatBridge
             ? void submit(