docs(SDK-141): modernize table-qa.ipynb to Pinecone SDK v8

[jhamon]

Summary

Modernize learn/search/question-answering/table-qa.ipynb to use Pinecone SDK v8 and align with style guidelines.

Changes

• Package: pinecone-client → pinecone
• Client: Initialize with Pinecone(api_key=...) and ServerlessSpec(cloud="aws", region="us-east-1")
• Index: Use pc.has_index(name=...), pc.create_index(..., spec=ServerlessSpec(...)), pc.Index(name=...)
• API key: Environment variable PINECONE_API_KEY or getpass fallback
• Query response: Use result.matches[0].id for v8 response shape
• Prose: Timeless intro; "initialize a client" language
• Cleanup: Added section to delete the index when done

Linear

• SDK-141 Modernize SDK: table-qa.ipynb

Checklist

• Notebook runs top to bottom
• No hardcoded API keys
• Cleanup cell at end

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Note

Low Risk
Low risk: documentation-only notebook updates, mainly swapping Pinecone client/index initialization and response handling to match SDK v8 and improving key handling/cleanup.

Overview
Updates learn/search/question-answering/table-qa.ipynb to use the Pinecone SDK v8 API: installs pinecone, initializes a Pinecone client, creates a serverless index via ServerlessSpec, and uses the new pc.has_index/pc.Index flow.

Improves notebook safety and maintainability by sourcing the API key from PINECONE_API_KEY (with getpass fallback), updating query result access to result.matches[0].id, refreshing explanatory prose, and adding a Cleanup cell to delete the index when finished.

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