Worked on backend reliability for the toeverything/AFFiNE repository by addressing server startup issues related to environment variable management. Focused on stabilizing the initialization process, this developer introduced a createGlobalEnv utility in TypeScript and Node.js, ensuring the .env file is loaded only once and a global environment object is created at startup. This refactoring eliminated race conditions and redundant environment variable loads, leading to more predictable and robust server behavior across deployments. The work centered on backend development, emphasizing careful handling of asynchronous initialization and improving deployment consistency without adding new features, but by resolving a critical startup bug.