Worked on backend development for the vercel/ai-chatbot repository, focusing on improving the reliability of document update flows. Addressed a critical bug in the onUpdateDocument process by correcting a model name typo, ensuring that the intended 'artifact-model' is invoked for code-related document updates. This change, implemented in TypeScript, reduced the risk of misrouting updates and improved the accuracy of language model selection. By aligning the code with issue #828 and providing clear commit documentation, the work enhanced both maintainability and traceability. The update contributed to more stable document processing and streamlined future maintenance for the backend system.