docs: 赞助商图片改用本地路径并新增火山引擎 CodingPlan

- Atlas Cloud 图片从远程链接改为 docs/image/sponsor/ 本地路径
- 新增火山引擎 CodingPlan 开发者计划赞助商（中英文 README 同步）

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

README.md

@@ -210,12 +210,19 @@ docker-compose -f docker-compose-all.yaml restart [服务名]
 **感谢以下赞助商对本项目的支持：**
 
 > <a href="https://www.atlascloud.ai?ref=89F97E">
->   <img src="https://ruoyiai-1254149996.cos.ap-guangzhou.myqcloud.com/2026/04/19/atlascloud.png" alt="Atlas Cloud" width="120" height="100">
+>   <img src="docs/image/sponsor/atlascloud_banner.png" alt="Atlas Cloud" width="160" height="80">
 > </a>
 >
 > [访问Atlas Cloud官网](https://www.atlascloud.ai?ref=89F97E) · [编程计划优惠](https://www.atlascloud.ai/console/coding-plan) <br>
 > 全模态 AI 推理平台，为开发者提供统一的 AI API，支持视频生成、图像生成和大语言模型。一次接入，即可访问 **300+ 精选模型**。<br>
 
+> <a href="https://www.volcengine.com/activity/codingplan?utm_campaign=hw&utm_content=hw&utm_medium=devrel_tool_web&utm_source=OWO&utm_term=ageerle-ruoyi-ai">
+>   <img src="docs/image/sponsor/huoshan.png" alt="火山引擎 CodingPlan" width="160" height="80">
+> </a>
+>
+> [火山引擎 CodingPlan 开发者计划](https://www.volcengine.com/activity/codingplan?utm_campaign=hw&utm_content=hw&utm_medium=devrel_tool_web&utm_source=OWO&utm_term=ageerle-ruoyi-ai) <br>
+> 火山引擎是字节跳动旗下的云与 AI 服务平台，火山方舟提供豆包大模型、DeepSeek 等多种模型的 API 接入，为开发者提供一站式 AI 开发与推理服务。<br>
+
 
 ## 💬 社区交流
 

README_EN.md

@@ -211,12 +211,19 @@ Thanks to the following excellent open-source projects for their support:
 **Thanks to the following sponsors for supporting this project:**
 
 > <a href="https://www.atlascloud.ai?ref=89F97E">
->   <img src="https://ruoyiai-1254149996.cos.ap-guangzhou.myqcloud.com/2026/04/19/atlascloud.png" alt="Atlas Cloud" width="120" height="100">
+>   <img src="docs/image/sponsor/atlascloud_banner.png" alt="Atlas Cloud" width="160" height="80">
 > </a>
 >
 > [Visit Atlas Cloud](https://www.atlascloud.ai?ref=89F97E) · [Coding Plan Promotion](https://www.atlascloud.ai/console/coding-plan) <br>
 > A full-modal AI inference platform that gives developers a unified AI API, supporting video generation, image generation, and LLMs. Connect once to access **300+ curated models**.<br>
 
+> <a href="https://www.volcengine.com/activity/codingplan?utm_campaign=hw&utm_content=hw&utm_medium=devrel_tool_web&utm_source=OWO&utm_term=ageerle-ruoyi-ai">
+>   <img src="docs/image/sponsor/huoshan.png" alt="Volcengine CodingPlan" width="160" height="80">
+> </a>
+>
+> [Volcengine CodingPlan Developer Program](https://www.volcengine.com/activity/codingplan?utm_campaign=hw&utm_content=hw&utm_medium=devrel_tool_web&utm_source=OWO&utm_term=ageerle-ruoyi-ai) <br>
+> Volcengine is ByteDance's cloud and AI service platform. Volcengine Ark provides API access to Doubao LLM, DeepSeek, and more — a one-stop AI development and inference platform for developers.<br>
+
 ## 💬 Community Chat
 
 <div align="center">