When multiple admins or ops users have a routing graph open simultaneously, there is no indication that someone else is editing. This leads to accidental overwrites, where one user's changes silently clobber another's, with no warning and no recovery path.

Requested behavior: Show real-time presence indicators on routing graphs (similar to Google Docs), displaying which users currently have the graph open or are actively editing. Ideally, this includes a soft lock or warning prompt if a second user attempts to make edits while another session is active.

Why it matters: Routing graphs are high-stakes configuration. A silent overwrite during a live rebuild or testing session can break active lead routing with no audit trail of what changed or who changed it. This is a meaningful data integrity and collaboration gap for any team with more than one ops user.