Run Data Sync

Share the caller's own existing data with this workspace.

Any member may do this FOR THEMSELVES — that is the whole point, and it is why there is no admin role check: an admin pressing this on someone else's behalf is exactly what the opt-in exists to prevent. require_workspace_membership without a role therefore reads as intended, not as a missing gate.

Data created from here on is stamped at creation, so this is a one-time catch-up for what already existed. Idempotent — running it again moves nothing.