Bug Description

After successfully indexing a document with /index, the chat command fails to find the indexed content.

Steps to Reproduce

1. Index a document:

   /index .\data\pdf
   

   Output shows success: ✅ Success: 18 chunks created

2. Verify document is indexed:

   /list
   

   Output confirms: Oil-and-Gas-Activity-Operations-Manual-1-10.pdf with 18 chunks

3. Query the document:

   chat "what is this document about?"
   

Expected Behavior

Chat should use the indexed document context to answer the question.

Actual Behavior

🧠 gaia: I don't see any document currently indexed. Could you please share the document you're referring to, or let me know if you'd like me to search for and index a specific file?

Documentation Gap

The CLI with RAG workflow is documented at /guides/chat#cli-with-rag but this wasn't intuitive to find. Users looking for CLI reference might expect this in the Reference section.

Acceptance Criteria

• Fix bug: chat command should access indexed documents
• Add test to validate the fix
• Review and fix any documentation gaps related to CLI + RAG workflow