docs: add hero images and community links to README

Add visual hero banners for both English and Chinese versions, and include LINUX DO community link in footer section.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

README.md

@@ -13,6 +13,8 @@ OfficeCLI is a free, open-source command-line tool for AI agents to read, edit,
 
 > Built for AI agents. Usable by humans.
 
+![OfficeCLI Hero](assets/hero-en.png)
+
 ## For AI Agents
 
 OfficeCLI ships with a [SKILL.md](SKILL.md) that teaches AI agents how to use it effectively.
@@ -323,6 +325,10 @@ Requires [.NET 10 SDK](https://dotnet.microsoft.com/download) for local compilat
 
 [Apache License 2.0](LICENSE)
 
+## Community
+
+[LINUX DO - The New Ideal Community](https://linux.do/)
+
 ---
 
 [OfficeCLI.AI](https://OfficeCLI.AI)

README_zh.md

@@ -13,6 +13,8 @@ OfficeCLI 是一个免费、开源的命令行工具，专为 AI 智能体设计
 
 > 为智能体而生，人类亦可用。
 
+![OfficeCLI 产品展示](assets/hero-zh.png)
+
 ## AI 智能体接入
 
 OfficeCLI 附带 [SKILL.md](SKILL.md)，用于指导 AI 智能体高效使用本工具。
@@ -323,6 +325,10 @@ OfficeCLI 与其他 AI 智能体处理 Office 文档的方案相比如何？
 
 [Apache License 2.0](LICENSE)
 
+## 友情链接
+
+[LINUX DO - 新的理想型社区](https://linux.do/)
+
 ---
 
 [OfficeCLI.AI](https://OfficeCLI.AI)