Fix: Clicking the button in the bottom-right corner of the /chats/widget page fails to display the dialog box. (#14465)

### What problem does this PR solve?

Fix: Clicking the button in the bottom-right corner of the
`/chats/widget` page fails to display the dialog box.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

.gitignore

@@ -231,3 +231,4 @@ internal/cpp/cmake-build-debug/
 # Go server build output
 bin/*
 !bin/.gitkeep
+.claude/settings.local.json

web/src/components/floating-chat-widget.tsx

@@ -4,10 +4,10 @@ import { MessageType, SharedFrom } from '@/constants/chat';
 import { useFetchExternalAgentInputs } from '@/hooks/use-agent-request';
 import { useFetchExternalChatInfo } from '@/hooks/use-chat-request';
 import i18n, { changeLanguageAsync } from '@/locales/config';
-import { useTranslation } from 'react-i18next';
 import { useSendNextSharedMessage } from '@/pages/agent/hooks/use-send-shared-message';
 import { MessageCircle, Minimize2, Send, X } from 'lucide-react';
 import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import {
   useGetSharedChatSearchParams,
   useSendSharedMessage,
@@ -91,6 +91,7 @@ const FloatingChatWidget = () => {
       oscillator.start(audioContext.currentTime);
       oscillator.stop(audioContext.currentTime + 0.3);
     } catch (error) {
+      console.warn(error);
       // Silent fail if audio not supported
     }
   }, []);
@@ -119,6 +120,8 @@ const FloatingChatWidget = () => {
       oscillator.start(audioContext.currentTime);
       oscillator.stop(audioContext.currentTime + 0.2);
     } catch (error) {
+      console.warn(error);
+
       // Silent fail if audio not supported
     }
   }, []);
@@ -180,9 +183,11 @@ const FloatingChatWidget = () => {
   // Master mode - handles everything and creates second iframe dynamically
   useEffect(() => {
     if (mode !== 'master') return;
-    // Create the chat window iframe dynamically when needed
-    const createChatWindow = () => {
-      // Check if iframe already exists in parent document
+
+    const isInIframe = window.self !== window.top;
+
+    if (isInIframe) {
+      // Embedded: tell parent to create chat window iframe
       window.parent.postMessage(
         {
           type: 'CREATE_CHAT_WINDOW',
@@ -190,19 +195,29 @@ const FloatingChatWidget = () => {
         },
         '*',
       );
-    };
+    } else {
+      // Standalone: create chat window iframe ourselves
+      if (!document.getElementById('chat-win')) {
+        const i = document.createElement('iframe');
+        i.id = 'chat-win';
+        i.src = window.location.href.replace('mode=master', 'mode=window');
+        i.style.cssText =
+          'position:fixed;bottom:104px;right:24px;width:380px;height:500px;border:none;background:transparent;z-index:9998;display:none';
+        i.frameBorder = '0';
+        i.allow = 'microphone;camera';
+        document.body.appendChild(i);
+      }
+    }
 
-    createChatWindow();
-
-    // Listen for our own toggle events to show/hide the dynamic iframe
+    // Listen for toggle messages to show/hide the chat window iframe
     const handleToggle = (e: MessageEvent) => {
-      if (e.source === window) return; // Ignore our own messages
-
-      const chatWindow = document.getElementById(
-        'dynamic-chat-window',
-      ) as HTMLIFrameElement;
-      if (chatWindow && e.data.type === 'TOGGLE_CHAT') {
-        chatWindow.style.display = e.data.isOpen ? 'block' : 'none';
+      if (e.data.type === 'TOGGLE_CHAT') {
+        const chatWindow = document.getElementById(
+          'chat-win',
+        ) as HTMLIFrameElement;
+        if (chatWindow) {
+          chatWindow.style.display = e.data.isOpen ? 'block' : 'none';
+        }
       }
     };
 
@@ -313,8 +328,9 @@ const FloatingChatWidget = () => {
             setIsOpen(newIsOpen);
             if (newIsOpen) playNotificationSound();
 
-            // Tell the parent to show/hide the dynamic iframe
-            window.parent.postMessage(
+            // Send toggle message to parent (if embedded) or self (if standalone)
+            const target = window.self !== window.top ? window.parent : window;
+            target.postMessage(
               {
                 type: 'TOGGLE_CHAT',
                 isOpen: newIsOpen,

web/src/components/next-message-item/group-button.tsx

@@ -82,7 +82,10 @@ export const AssistantGroupButton = ({
         className="space-x-1"
       >
         <ToggleGroupItem value="a">
-          <CopyToClipboard text={content}></CopyToClipboard>
+          <CopyToClipboard
+            text={content}
+            className="border-none hover:!bg-transparent"
+          ></CopyToClipboard>
         </ToggleGroupItem>
         {showLoudspeaker && (
           <ToggleGroupItem value="b" onClick={handleRead}>