Two new optional fields in [daemon]: perimeter_id (e.g. "wg-naps62") and private_addr (e.g. "10.0.0.7:7070"). Env overrides via MAESTRO_DAEMON_PERIMETER_ID and MAESTRO_DAEMON_PRIVATE_ADDR. Both flow through DaemonConfig but the daemon doesn't act on them yet — heartbeat wiring lands next. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>