doc (#5472)

* doc

* fix: pane undefined

* fix: pane undefined

document/content/docs/upgrading/4-12/4121.mdx

@@ -1,8 +1,19 @@
 ---
-title: 'V4.12.1(进行中)'
+title: 'V4.12.1'
 description: 'FastGPT V4.12.1 更新说明'
 ---
 
+## 更新指南
+
+### 1. 更新镜像：
+
+- 更新 FastGPT 镜像tag: v4.12.1
+- 更新 FastGPT 商业版镜像tag: v4.12.1
+- 更新 fastgpt-plugin 镜像 tag: v0.1.10
+- mcp_server 无需更新
+- Sandbox 无需更新
+- AIProxy 无需更新
+
 ## 🚀 新增内容
 
 1. Prompt 自动生成和优化。

document/data/doc-last-modified.json

@@ -103,7 +103,7 @@
   "document/content/docs/upgrading/4-11/4110.mdx": "2025-08-05T23:20:39+08:00",
   "document/content/docs/upgrading/4-11/4111.mdx": "2025-08-07T22:49:09+08:00",
   "document/content/docs/upgrading/4-12/4120.mdx": "2025-08-12T22:45:19+08:00",
-  "document/content/docs/upgrading/4-12/4121.mdx": "2025-08-15T17:10:04+08:00",
+  "document/content/docs/upgrading/4-12/4121.mdx": "2025-08-15T17:56:49+08:00",
   "document/content/docs/upgrading/4-8/40.mdx": "2025-08-02T19:38:37+08:00",
   "document/content/docs/upgrading/4-8/41.mdx": "2025-08-02T19:38:37+08:00",
   "document/content/docs/upgrading/4-8/42.mdx": "2025-08-02T19:38:37+08:00",

projects/app/src/web/core/chat/context/chatSettingContext.tsx

@@ -9,7 +9,7 @@ import { useChatStore } from '@/web/core/chat/context/useChatStore';
 import type { ChatSettingSchema } from '@fastgpt/global/core/chat/setting/type';
 import { useRequest2 } from '@fastgpt/web/hooks/useRequest';
 import { useRouter } from 'next/router';
-import { useCallback, useMemo, useState } from 'react';
+import { useCallback, useEffect, useMemo, useState } from 'react';
 import { createContext } from 'use-context-selector';
 
 type ChatSettingReturnType = ChatSettingSchema | undefined;
@@ -94,9 +94,15 @@ export const ChatSettingContextProvider = ({ children }: { children: React.React
       setLastPane(newPane);
       setLastChatAppId(_id);
     },
-    [setLastPane, chatSettings?.appId, appId, router, pane]
+    [pane, router, setLastPane, setLastChatAppId, chatSettings?.appId]
   );
 
+  useEffect(() => {
+    if (!Object.values(ChatSidebarPaneEnum).includes(pane)) {
+      handlePaneChange(ChatSidebarPaneEnum.HOME);
+    }
+  }, [pane]);
+
   const logos: Pick<ChatSettingSchema, 'wideLogoUrl' | 'squareLogoUrl'> = useMemo(
     () => ({
       wideLogoUrl: chatSettings?.wideLogoUrl,

projects/app/src/web/core/chat/context/useChatStore.ts

@@ -2,7 +2,7 @@ import { create, createJSONStorage, devtools, persist, immer } from '@fastgpt/we
 import { getNanoid } from '@fastgpt/global/common/string/tools';
 import { type OutLinkChatAuthProps } from '@fastgpt/global/support/permission/chat';
 import type { ChatSourceEnum } from '@fastgpt/global/core/chat/constants';
-import type { ChatSidebarPaneEnum } from '@/pageComponents/chat/constants';
+import { ChatSidebarPaneEnum } from '@/pageComponents/chat/constants';
 
 type State = {
   source?: `${ChatSourceEnum}`;
@@ -17,7 +17,7 @@ type State = {
   chatId: string;
   setChatId: (e?: string) => any;
 
-  lastPane?: ChatSidebarPaneEnum;
+  lastPane: ChatSidebarPaneEnum;
   setLastPane: (e: ChatSidebarPaneEnum) => any;
 
   outLinkAuthData: OutLinkChatAuthProps;
@@ -116,7 +116,7 @@ export const useChatStore = create<State>()(
             state.lastChatAppId = e;
           });
         },
-        lastPane: undefined,
+        lastPane: ChatSidebarPaneEnum.HOME,
         setLastPane(e) {
           set((state) => {
             state.lastPane = e;