Worked on the tisfeng/lobe-chat repository to enhance Azure OpenAI integration by refining the role assignment logic for Azure OpenAI models and updating the URL masking regex to reflect recent changes in Azure service endpoints. Using TypeScript and full stack development skills, addressed a critical issue involving role mapping and sensitive URL handling, which reduced the risk of misrouting and exposure of confidential information. The technical approach focused on improving both reliability and security, ensuring that the integration remained robust across different environments. All changes were developed with deployment readiness in mind and aligned with established QA processes for smooth rollout.