Add smart ACK provider for WeChat MP replies

Replace fixed ackText with a rule-based AckProvider that picks
response templates by message type and intent (translate, summary,
rewrite, poster, ppt, mindmap, code, search, schedule). Pure sync,
zero I/O, auto-falls back to config.ackText on any error.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/ChatView.tsx

@@ -12,6 +12,7 @@ import { ChatPanel } from './ChatPanel';
 import { WechatBindPrompt } from './WechatBindPrompt';
 import { WechatAccountButton } from './WechatAccountButton';
 import { ChatHeaderMoreMenu } from './ChatHeaderMoreMenu';
+import { NotificationCenter } from './NotificationCenter';
 import type { MindSpaceSaveCategory } from '../types';
 
 export function ChatView({
@@ -56,7 +57,9 @@ export function ChatView({
     balanceCents,
     totalCreditCents,
     tokensUsed,
+    subscription,
     openRecharge,
+    openSubscribe,
     uploadChatImage,
   } = useChat();
   const online = useNetworkStatus();
@@ -148,9 +151,12 @@ export function ChatView({
                 balanceCents={balanceCents}
                 totalCreditCents={totalCreditCents}
                 tokensUsed={tokensUsed}
+                subscription={subscription}
                 onRecharge={openRecharge}
+                onSubscribe={openSubscribe}
               />
             )}
+            <NotificationCenter onOpenRecharge={() => openRecharge(false)} />
             {onOpenAdmin && (
               <button type="button" className="ghost-btn" onClick={onOpenAdmin}>
                 管理
@@ -196,9 +202,12 @@ export function ChatView({
                 balanceCents={balanceCents}
                 totalCreditCents={totalCreditCents}
                 tokensUsed={tokensUsed}
+                subscription={subscription}
                 onRecharge={openRecharge}
+                onSubscribe={openSubscribe}
               />
             )}
+            <NotificationCenter onOpenRecharge={() => openRecharge(false)} />
             {onOpenSpace && (
               <button
                 type="button"
@@ -251,7 +260,7 @@ export function ChatView({
 
         {notice && (
           <div className={`banner${notice === INSUFFICIENT_BALANCE_NOTICE ? ' banner-warning' : ' banner-info'}`}>
-            <span>{notice}</span>
+            <span style={{ whiteSpace: 'pre-line' }}>{notice}</span>
             {notice === INSUFFICIENT_BALANCE_NOTICE ? (
               <>
                 <button type="button" className="banner-action" onClick={() => openRecharge(false)}>