docs: Ledger Live integration, contract deploy learnings, NEXT_STEPS updates

- ADD_CHAIN138_TO_LEDGER_LIVE: Ledger form done; public code review repo bis-innovations/LedgerLive; init/push commands
- CONTRACT_DEPLOYMENT_RUNBOOK: Chain 138 gas price 1 gwei, 36-addr check, TransactionMirror workaround
- CONTRACT_*: AddressMapper, MirrorManager deployed 2026-02-12; 36-address on-chain check
- NEXT_STEPS_FOR_YOU: Ledger done; steps completable now (no LAN); run-completable-tasks-from-anywhere
- MASTER_INDEX, OPERATOR_OPTIONAL, SMART_CONTRACTS_INVENTORY_SIMPLE: updates
- LEDGER_BLOCKCHAIN_INTEGRATION_COMPLETE: bis-innovations/LedgerLive reference

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/setup_ssh_tunnel.sh

@@ -1,4 +1,12 @@
 #!/bin/bash
+set -euo pipefail
+
+# Load IP configuration
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+source "${PROJECT_ROOT}/config/ip-addresses.conf" 2>/dev/null || true
+
+
 # Setup SSH tunnel for Proxmox API access
 # This allows list_vms.py to work from different network segments
 
@@ -50,13 +58,13 @@ if ! ssh -o ConnectTimeout=5 -o StrictHostKeyChecking=no "$SSH_USER@$PROXMOX_HOS
     echo ""
     echo "Alternative: Use Cloudflare tunnel for web access:"
     case "$PROXMOX_HOST" in
-        192.168.11.10)
+        ${PROXMOX_HOST_ML110:-192.168.11.10})
             echo "  https://ml110-01.d-bis.org"
             ;;
-        192.168.11.11)
+        ${PROXMOX_HOST_R630_01:-192.168.11.11})
             echo "  https://r630-01.d-bis.org"
             ;;
-        192.168.11.12)
+        ${PROXMOX_HOST_R630_02:-192.168.11.12})
             echo "  https://r630-02.d-bis.org"
             ;;
     esac