Add new Mintlify documentation site (docs_new/) (#23001)

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docs_new/cookbook/diffusion/README.mdx

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+---
+title: "Diffusion Cookbook"
+description: "Cookbook recipes for running diffusion models with SGLang"
+metatags:
+    description: "Explore SGLang diffusion cookbook structure, categories, and contribution guidance for image and video generation recipes."
+---
+
+# SGLang Diffusion Cookbook
+
+<div style={{display: 'flex', gap: '8px'}}>
+  <a href="https://opensource.org/licenses/Apache-2.0"><img src="https://img.shields.io/badge/License-Apache_2.0-blue.svg" alt="License" /></a>
+  <a href="https://github.com/sgl-project/sgl-cookbook/pulls"><img src="https://img.shields.io/badge/PRs-welcome-brightgreen.svg" alt="PRs Welcome" /></a>
+</div>
+
+Create a comprehensive cookbook for diffusion models in SGLang, demonstrating SGLang's performance advantages for image and video generation workloads.
+
+## 🎯 What You'll Find Here
+
+This cookbook aggregates battle-tested SGLang recipes covering:
+
+- **Models**: Mainstream Image and Video generation  Models
+- **Use Cases**: Inference serving, deployment strategies
+- **Hardware**: GPU and CPU configurations, optimization for different accelerators
+- **Best Practices**: Configuration templates, performance tuning, troubleshooting guides
+
+Each recipe provides step-by-step instructions to help you quickly implement SGLang solutions for your specific requirements.
+
+## 🚀 Quick Start
+
+1. Browse the recipe index above to find your model
+2. Follow the step-by-step instructions in each guide
+3. Adapt configurations to your specific hardware and requirements
+4. Join our community to share feedback and improvements
+
+The sglang diffusion cookbook directory structure are shown below:
+
+```text Example
+sgl-cookbook/docs/diffusion/
+├── README.md              # Main cookbook (this file)
+├── Qwen-Image/            # Qwen-Image series models docs
+│   ├── Qwen-Image.md
+│   └── Qwen-Image-Edit.md
+├── Wan/                   # Wan series models docs
+│   ├── Wan2.1.md
+│   └── Wan2.2.md
+├── Z-Image/               # Z-Image series models docs
+│   └── Z-Image-Turbo.md
+└── ...
+```
+
+## 🤝 Contributing
+
+We believe the best documentation comes from practitioners. Whether you've optimized SGLang for a specific model, solved a tricky deployment challenge, or discovered performance improvements, we encourage you to contribute your recipes!
+
+**💪How to Contribute**
+
+- Comment below if interested (mention which role)
+- Join discussion on implementation details
+- Fork repo and work on assigned section
+- Submit PR following SGLang cookbook standards
+- Iterate based on review feedback
+
+**To contribute:**
+
+```shell Command
+# Fork the repo and clone locally
+git clone https://github.com/YOUR_USERNAME/sglang-cookbook.git
+cd sglang-cookbook
+
+# Create a new branch
+git checkout -b add-my-recipe
+
+# Add your recipe following the template in DeepSeek-V3.2
+# Submit a PR!
+```
+
+## 📖 Resources
+
+- [SGLang GitHub](https://github.com/sgl-project/sglang)
+- [SGLang Documentation](https://sgl-project.github.io)
+- [SGLANG Diffusion Documentation](https://github.com/sgl-project/sglang/blob/main/python/sglang/multimodal_gen/README.md)
+- [SLACK Channel](https://sgl-fru7574.slack.com/archives/C07GLLLESNR)
+- [Community Slack/Discord](https://discord.gg/MpEEuAeb)
+
+## 📄 License
+
+This project is licensed under the Apache License 2.0 - see the [LICENSE](https://github.com/sgl-project/sgl-cookbook/blob/main/LICENSE) file for details.
+
+---
+
+**Let's build this resource together!** 🚀 Star the repo and contribute your recipes to help the SGLang community grow.