docs: add FAQ entry for file sending and receiving support

Author: johnlanni

docs/faq.md

@@ -6,6 +6,7 @@
 - [How to talk to a Worker directly](#how-to-talk-to-a-worker-directly)
 - [How to switch the Manager's model](#how-to-switch-the-managers-model)
 - [How to switch a Worker's model](#how-to-switch-a-workers-model)
+- [Does HiClaw support sending and receiving files](#does-hiclaw-support-sending-and-receiving-files)
 - [Why does Manager/Worker keep showing "typing"](#why-does-managerworker-keep-showing-typing)
 - [Manager not responding or returning error status codes](#manager-not-responding-or-returning-error-status-codes)
 
@@ -103,6 +104,14 @@ Make sure the Higress `default-ai-route` is already configured to route the targ
 
 ---
 
+## Does HiClaw support sending and receiving files
+
+**Receiving files from you**: Yes. You can upload a file directly in Element Web (the attachment button), and Manager or Worker will receive it as a Matrix media message and can read its content.
+
+**Sending files to you**: Yes. When you ask Manager (or a Worker) to send you a file — such as a task output artifact, a generated report, or any file it has access to — it will upload the file to the Matrix media server and send it to the room as a downloadable attachment. You can then click to download it in Element Web.
+
+---
+
 ## Why does Manager/Worker keep showing "typing"
 
 This is normal — it means the underlying OpenClaw agent engine is actively executing. HiClaw sets a 30-minute timeout per task, so an agent can stay in this state for up to 30 minutes while working.

docs/zh-cn/faq.md

@@ -6,6 +6,7 @@
 - [如何主动指挥 Worker](#如何主动指挥-worker)
 - [如何切换 Manager 的模型](#如何切换-manager-的模型)
 - [如何切换 Worker 的模型](#如何切换-worker-的模型)
+- [HiClaw 支持发送和接收文件吗](#hiclaw-支持发送和接收文件吗)
 - [为什么 Manager/Worker 一直显示"输入中"](#为什么-managerworker-一直显示输入中)
 - [在房间里和 Manager 聊天没有响应或返回错误状态码](#在房间里和-manager-聊天没有响应或返回错误状态码)
 
@@ -103,6 +104,14 @@ http://<局域网IP>:18080
 
 ---
 
+## HiClaw 支持发送和接收文件吗
+
+**接收你发送的文件**：支持。在 Element Web 中点击附件按钮上传文件，Manager 或 Worker 会收到 Matrix 媒体消息并可以读取其内容。
+
+**向你发送文件**：支持。当你要求 Manager（或 Worker）发送文件时——例如任务产物、生成的报告或它能访问的任意文件——它会将文件上传到 Matrix 媒体服务器，并以可下载附件的形式发送到房间中，你在 Element Web 里点击即可下载。
+
+---
+
 ## 为什么 Manager/Worker 一直显示"输入中"
 
 这是正常现象，说明底层的 OpenClaw Agent 引擎正在执行任务。HiClaw 设定的单次任务超时时间为 30 分钟，Agent 最长会持续执行 30 分钟。