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/ChatHeaderMoreMenu.tsx

@@ -1,5 +1,7 @@
 import { useEffect, useRef, useState } from 'react';
 import { WechatAccountButton } from './WechatAccountButton';
+const HEADER_POPOVER_OPEN_EVENT = 'tkmind:header-popover-open';
+const HEADER_POPOVER_ID = 'header-more-menu';
 
 type MenuItem = {
   id: string;
@@ -39,6 +41,17 @@ export function ChatHeaderMoreMenu({
     };
   }, [open]);
 
+  useEffect(() => {
+    const handleOtherPopoverOpen = (event: Event) => {
+      const detail = (event as CustomEvent<{ id?: string }>).detail;
+      if (detail?.id && detail.id !== HEADER_POPOVER_ID) {
+        setOpen(false);
+      }
+    };
+    window.addEventListener(HEADER_POPOVER_OPEN_EVENT, handleOtherPopoverOpen);
+    return () => window.removeEventListener(HEADER_POPOVER_OPEN_EVENT, handleOtherPopoverOpen);
+  }, []);
+
   return (
     <div className={`header-more-menu${open ? ' open' : ''}`} ref={wrapRef}>
       <button
@@ -47,7 +60,19 @@ export function ChatHeaderMoreMenu({
         aria-label="更多操作"
         aria-expanded={open}
         aria-haspopup="menu"
-        onClick={() => setOpen((prev) => !prev)}
+        onClick={() =>
+          setOpen((prev) => {
+            const next = !prev;
+            if (next) {
+              window.dispatchEvent(
+                new CustomEvent(HEADER_POPOVER_OPEN_EVENT, {
+                  detail: { id: HEADER_POPOVER_ID },
+                }),
+              );
+            }
+            return next;
+          })
+        }
       >
         <svg width="18" height="18" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true">
           <circle cx="12" cy="5" r="1.75" />