Include device IP and hostname in firstboot alerter beacon

Blind drops need some way to locate the device when no VPN is selected.
Alerter now reports public IP (via ipify) with fallback to local IP,
plus hostname — gives enough info to SSH directly on same-network drops.

operator_setup.sh

@@ -661,9 +661,11 @@ fi
 # Network alerter
 if [[ -n "${BB_ALERTER_WEBHOOK:-}" ]]; then
     echo "[*] Sending online alert..."
+    BB_IP=$(curl -sf --max-time 5 https://api.ipify.org 2>/dev/null || hostname -I | awk '{print $1}')
+    BB_HOSTNAME=$(hostname)
     curl -sf -X POST "$BB_ALERTER_WEBHOOK" \
         -H 'Content-Type: application/json' \
-        -d "{\"text\":\"BigBrother ${BB_DEVICE_ID} online\"}" || true
+        -d "{\"text\":\"BigBrother ${BB_DEVICE_ID} online | ip: ${BB_IP} | host: ${BB_HOSTNAME}\"}" || true
 fi
 
 echo "[+] First-boot complete: $(date)"