Worked on the bitwarden/mcp-server repository to address a critical authentication reliability issue affecting backend operations. Focused on backend development and DevOps using Node.js and TypeScript, the work involved ensuring the BW_SESSION environment variable was consistently propagated to all child processes. This was achieved by updating the executeCliCommand function to pass environment variables to execPromise, thereby maintaining session continuity across process boundaries. The solution resolved authentication failures that previously occurred when BW_SESSION was missing in child processes, resulting in improved reliability and user authentication experience for MCP server operations. The work demonstrated careful attention to cross-process environment management.