docs: update base export and IM integration

Update base duplicate/export instructions, add CuppyClaw IM message support, and remove the old AGENT.md notes file.

Author: HynLcc

AGENT.md

@@ -39,11 +39,13 @@ Common operations include:
 
 ### Duplicate a Base to Another Space
 
-Step 1: In the workspace, select the base you want to move;
+Step 1: In the workspace, select the base you want to duplicate;
 
 Step 2: Click the menu icon and select the Copy Base option;
 
-Step 3: A popup window will appear with a dropdown menu of available spaces where you can duplicate the base to. You need Creator permissions in the target space to move the base there.
+Step 3: In the popup, choose the target space. You need Creator permissions in that space.
+
+For larger bases, Teable shows progress in the duplicate dialog while it copies the base structure, records, and attachments. Keep the dialog open until the copy finishes. Revision history and collaborators are not copied.
 
 <img
   src="/images/staged-base-preview/2026-05-11-base-en-duplicate-base.png"
@@ -79,7 +81,9 @@ Export your base to a `.tea` file for backup or migration purposes. The exported
 2. Hover your mouse over the base you want to export
 3. Click the 「···」 button to open the menu
 4. Click 「Export」
-5. The export result will be notified in the notification bar, where you can directly download the `.tea` file
+5. Keep **Include records** turned on to export record data. Turn it off to export only the structure and configuration.
+6. Click **Start exporting** and wait for the export to finish.
+7. Click **Download** in the export dialog to save the `.tea` file.
 
 <img
   src="/images/staged-base-preview/2026-05-11-base-en-export-base.png"
@@ -91,6 +95,10 @@ Export your base to a `.tea` file for backup or migration purposes. The exported
 **Data Migration Tip**: To migrate data between Teable instances, export your base from the source instance, then import the `.tea` file to the target instance. All data and configurations will be preserved.
 </Tip>
 
+<Note>
+Teable converts cross-base relation fields to single-line text fields in the exported file.
+</Note>
+
 ### Share a Base
 
 Bases can be shared through public links. The sharing scope can be the entire base or the currently selected item.

en/basic/base.mdx

@@ -57,6 +57,8 @@ description: "创建、管理、导入导出数据库。通过 .tea 文件在 Te
 
 第三步：在弹出的窗口中选择目标空间，需拥有目标空间的`可搭建`权限才能完成复制
 
+如果数据库较大，复制窗口会显示复制进度。请等复制完成后再关闭窗口。记录修改历史和协作者不会被复制。
+
 <img
   src="/images/staged-base-preview/2026-05-11-base-zh-copy-base.png"
   alt="复制数据库到另一个空间"
@@ -91,7 +93,9 @@ description: "创建、管理、导入导出数据库。通过 .tea 文件在 Te
 2. 鼠标悬浮在需要导出的数据库上
 3. 点击`···`按钮打开菜单
 4. 点击`导出`
-5. 导出完成后，将通过通知栏提醒，可直接在通知中下载 `.tea` 文件
+5. 如需包含记录数据，保持 **包含记录** 开启；关闭后只会导出结构和配置
+6. 点击 **开始导出**，等待进度完成
+7. 导出完成后，在导出窗口中点击 **下载** 保存 `.tea` 文件
 
 <img
   src="/images/staged-base-preview/2026-05-11-base-zh-export-base.png"
@@ -103,6 +107,10 @@ description: "创建、管理、导入导出数据库。通过 .tea 文件在 Te
 **数据迁移提示**：要在 Teable 实例之间迁移数据，从源实例导出数据库，然后将 `.tea` 文件导入到目标实例。所有数据和配置都会保留。
 </Tip>
 
+<Note>
+跨数据库关联字段会在导出文件中转换为单行文本。
+</Note>
+
 ### 分享数据库
 
 数据库可以通过公开链接分享。分享范围可以是整个数据库，也可以是当前选中的某个节点。

zh/basic/base.mdx

@@ -68,7 +68,13 @@ im.message.receive_v1
 
 测试通过后，将机器人添加到飞书群组，并在群内验证 CuppyClaw 是否能收到消息和响应。
 
-## 七、 常见排查
+## 七、 消息内容支持
+
+CuppyClaw 可以处理飞书群组中的文字、图片、文件、音频、视频、表情和富文本消息。对于飞书卡片和分享类消息，它会提取其中可读的标题、正文和关键字段，作为 AI 对话上下文。
+
+如果消息类型不在支持范围内，CuppyClaw 只能看到不支持的占位内容。遇到这种情况，可以改用文字说明，或把相关文件、图片直接给 CuppyClaw。
+
+## 八、 常见排查
 
 - **测试连接失败**：先确认 App ID 和 App Secret 是否来自同一个飞书应用。
 - **群里无法使用机器人**：确认应用已发布，并且可用范围包含当前成员。