feat(core,plugin-history-sync): allow step actions for non-top activities#642

orionmiz wants to merge 11 commits intomaindaangn/stackflow:mainfrom

claude/modify-step-action-scope-011CUNBq87uzYD4N35PjiTbidaangn/stackflow:claude/modify-step-action-scope-011CUNBq87uzYD4N35PjiTbiCopy head branch name to clipboard