Worked on the bluesky/bluesky repository to deliver a new feature focused on improving plan lifecycle management and reliability. Developed and integrated the Plan.close() method, ensuring explicit resource cleanup and robust handling of interrupted plans to prevent resource leaks. Enhanced the plan execution process by refining pchain handling, which improved resilience during errors and interruptions. Added targeted unit tests to increase coverage and safeguard against regressions, aligning changes with continuous integration practices. Utilized Python for implementation, emphasizing error handling, resource management, and code quality. The work resulted in more reliable plan execution and better maintainability for the codebase over the month.