Add New Tutorial (Jupyter Notebook): Building a RAG Application with Couchbase and AG2

[VirajAgarwal1]

This PR introduces a new Jupyter Notebook tutorial that demonstrates how to build a Retrieval-Augmented Generation (RAG) application using Couchbase and AG2. The tutorial highlights how our integration simplifies RAG development by leveraging Couchbase’s Search vector index for efficient document retrieval and AG2’s AI capabilities for intelligent response generation.

[github-actions]

Caution

Notebooks or Frontmatter Files Have Been Modified

• Please ensure that a frontmatter.md file is accompanying the notebook file, and that the frontmatter is up to date.
• These changes will be published to the developer portal tutorials only if frontmatter.md is included.
• Proofread all changes before merging, as changes to notebook and frontmatter content will update the developer tutorial.

1 Notebook Files Modified:

Notebook File	Frontmatter Included?
ag2/agentchat_RetrieveChat_couchbase.ipynb	✅

1 Frontmatter Files Modified:

Frontmatter File
ag2/frontmatter.md
Note: frontmatter will be checked and tested in the Test Frontmatter workflow.

[lokeshgoel177]

The max tutorial size allowed is 100KB. As the image is very large, please make it small or remove it. For normal tutorials it doesn't matter much but algolia plugin doesn't likes this

[lokeshgoel177]

I have suggested few changes

[lokeshgoel177]

LGTM. Nice Work!!

[VirajAgarwal1]

LGTM. Nice Work!!

Thank You!