feat(attachments): v2 follow-ups — read visibility, authed downloads, edit-on-parent, lifecycle, enforce-or-remove (#2970)#2984

os-zhuang merged 3 commits into

mainobjectstack-ai/objectstack:mainfrom

claude/attachments-v1-followups-8jhvinobjectstack-ai/objectstack:claude/attachments-v1-followups-8jhvinCopy head branch name to clipboard