Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WzxdWXTUM9dpnCS2wtFkx4
Save-as on mobile (SAF), save dialog on desktop, download on web; versioned envelope helper. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WzxdWXTUM9dpnCS2wtFkx4