Callum Zhong developed and integrated the Habitica Tasks Plugin for the Logseq Marketplace, focusing on initial setup and visual consistency within the avelino/logseq-marketplace repository. His work involved creating a new plugin package and addressing a visual asset issue by updating the SVG icon path to ensure correct rendering across the user interface. Utilizing skills in plugin development and SVG asset management, Callum delivered a targeted feature that improved the plugin’s usability and appearance. The scope of work was focused and foundational, laying the groundwork for future enhancements while ensuring the plugin met interface standards without introducing or resolving additional bugs.