Worked on the moltbot/moltbot repository to address a critical bug affecting media handling in self-hosted Telegram Bot API deployments. Focused on backend development and API integration using TypeScript, the solution mapped container-absolute file paths back to trusted local roots, ensuring correct access and processing of media files in local mode. The approach included handling per-token directory variations, preserving large-file downloads, and implementing path normalization to enhance security by preventing directory traversal. Validation involved AI-assisted code review and targeted Vitest testing, resulting in improved reliability and reduced media-related errors for containerized, self-hosted environments. No new features were introduced.