May 2025 monthly summary for HubSpot Slack client (HubSpot/slack-client). Focus: deliver ZIP file type support to improve accuracy of file handling and reliability of Slack attachments. What was delivered: Added ZIP file type support via a new ZIPFileType enum and a dedicated interface for ZIP file properties; integrated ZIP file-type handling into the existing file-processing flow to correctly identify and process ZIP attachments. Impact: Enhances user experience by ensuring ZIP files are recognized and processed consistently, reducing manual handling and support overhead for ZIP attachments. Establishes extensibility groundwork for future file-type enhancements and better maintainability of the Slack client features. Commits anchoring the change: 10187dbb95409b4591eb27cfe1e33a72135e5007 (message: add zip filetype).

January 2025: Implemented Google Docs (gdoc) support in the Slack client and fixed a deserialization bug to improve reliability of gdoc file handling. This work enhances cross-platform collaboration by enabling recognition of Google Docs shared via Slack and establishes groundwork for downstream processing. The changes are aligned with the roadmap to unify file-type handling and improve developer experience through clear interfaces and robust parsing.