Worked on the moltbot/moltbot repository to enhance iMessage group chat handling by introducing recognition of bare 32-character hexadecimal identifiers as valid chat targets, preventing their misinterpretation as phone numbers. Used TypeScript and full stack development skills to refactor the send-path parser and outbound normalizer, centralizing the processing of chat identifiers for improved maintainability. Addressed a normalization bug that previously routed messages incorrectly by converting hex IDs into E.164 numbers, thereby improving delivery reliability and reducing support incidents. Focused on robust testing and code organization, this work laid a foundation for future extensibility in iMessage targeting and routing accuracy.