chore: add docstrings for indexes and routers

fix: pinecone init logic

feat: Add Pinecone Local Index support and update dependencies

- Set X-Pinecone-API-Version header for cloud API endpoints
- Ensure compatibility with Pinecone's latest API versioning

- Refactor base URL assignment to prioritize environment variable
- Ensure consistent base URL configuration for Pinecone index
- Maintain existing logging behavior for remote API usage

Merge branch 'anup/pinecone-local' of https://github.com/aurelio-labs/semantic-router into anup/pinecone-local

- Update PineconeIndex to handle both local and cloud Pinecone index configurations
- Add base_url default to Pinecone cloud API
- Improve logging for base URL selection
- Update documentation notebook to reflect new configuration approach

- Uncomment and enable multiple Python versions (3.10, 3.11, 3.12, 3.13)
- Enable Poetry caching in GitHub Actions
- Remove local path addition comment
- Simplify workflow configuration

- Deleted `pinecone_local.py` and `10-pinecone-local.ipynb`
- Updated `pinecone.py` to handle both cloud and local Pinecone index scenarios
- Modified test files to use `PineconeIndex` instead of `PineconeLocalIndex`
- Updated GitHub Actions workflow to simplify Python version testing
- Improved error handling and host URL management in Pinecone index methods

chore: dev9 release

fix: handle empty function_schemas in route processing

fix: unzip utterances

refactor: linter + formatter