Peers that opt in via a new "Share Location" toggle in Settings (server.set-location RPC) get plotted on other trusted peers' Mesh Map with a distinct Archy-logo marker, separate from raw LoRa radio peers. Location is persisted locally, carried in NodeStateSnapshot, and propagated through federation sync/delta like other node state. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>