feat: Telegram fleet alerts, forge sigil scramble, UI polish, agent ops

- Calibrate: per-event Telegram/SMTP toggles, test notification, chat ID help
- Notify on agent connect/reconnect, offline/hashrate/rejection, forge complete
- Sigil scramble post-forge uniquification and Dispense Reveal ceremony
- Full system check, desktop push, BITS/host-binary persistence, Path Tracer
- Dashboard/Crucible visual polish, haptics, sacred geometry, mobile nav
- README documents alerts, sigil scramble, and pack-usb workflow
- USB bundle repacked via pack-usb.bat (AetherForge.exe + synced agent source)

agent/deploy/network_export.go

@@ -0,0 +1,11 @@
+package deploy
+
+// ArpNeighborIPs returns IPv4 hosts in the local ARP cache on shared subnets.
+func ArpNeighborIPs() []string {
+	return arpHosts()
+}
+
+// PrimaryLocalIPv4 returns the preferred outbound IPv4 (UDP dial trick).
+func PrimaryLocalIPv4() (string, error) {
+	return primaryLocalIPv4()
+}