Gptme-rag

Changes

- Fix: Return number of documents indexed in `index_directory`
- Fix: Improve indexing robustness and type safety
- Test: Add test duration reporting and optimize test timings

Changes

- build(deps): removed unused dependencies

What's Changed

Features
- Added file watching with real-time index updates
- Added performance benchmarking functionality
- Added document chunking with configurable size/overlap

Improvements
- Improved code quality and reliability
- Updated CI/CD pipeline with latest GitHub Actions
- Added code coverage reporting

Development
- Added pytest-cov for test coverage reporting

Changes

- Added tiktoken dependency required by context assembler
- Fixed failing tests due to missing dependency
- Updated poetry.lock file