feat(bedrock-kb-retrieval-mcp-server): Added 'description' field to responses for list_knowledge_bases_tool

[ghhamel]

Fixes

Summary

Changes

Added 'description' field to responses for list_knowledge_bases_tool. That field already exists in the AWS infrastructure and is returned via the list_knowledge_bases API. I have simply added it to the result that is returned. This provides context so that an agent can choose which knowledge base to consult for a given user prompt.

User experience

Before this change, the user prompt would need to tell an agent which knowledge base to query. After this change, the agent has additional context for each knowledge base through the provided description.

Checklist

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• I have reviewed the contributing guidelines
• I have performed a self-review of this change
• Changes have been tested
• Changes are documented

Is this a breaking change? (Y/N) N

RFC issue number:

Checklist:

• Migration process documented
• Implement warnings (if it can live side by side)

Acknowledgment

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