Fix background job zombie entries and enhance --fresh clearing#435

SparshGarg999 wants to merge 2 commits into

openai:mainopenai/codex-plugin-cc:mainfrom

SparshGarg999:fix-zombie-jobs-and-fresh-optionSparshGarg999/codex-plugin-cc:fix-zombie-jobs-and-fresh-optionCopy head branch name to clipboard