- Add read_files tool in packages/ai/src/tools/file-tools
- Support both absolute and relative file paths
- Implement 1000-line truncation with indication
- Handle errors gracefully with discriminated union results
- Include comprehensive unit tests with 10/10 passing
- Export tool from main index
- Update sandbox index to export runTypescript and createSandbox
- Follow established patterns from execute-sql.ts
Co-Authored-By: Dallin Bentley <dallinbentley98@gmail.com>