feat(core,cli): relocate clipboard images to project-specific temp dir #15527

psinha40898 wants to merge 6 commits intogoogle-gemini:maingoogle-gemini/gemini-cli:mainfrom

psinha40898:pyush/feat/clean-project-clipboardpsinha40898/gemini-cli:pyush/feat/clean-project-clipboardCopy head branch name to clipboard