feat(jmri): headless JMRI server with Leviton layout power monitor and X11 GUI mode

- Stable udev device symlinks (/dev/jmri/nce, /dev/jmri/loconet, /dev/jmri/lcc)
- jmri-monitor: polls Leviton Decora Smart switch to start/stop JMRI automatically
  - Quiet hours 1-10 AM (no polling)
  - 30s off-delay before shutdown
- LCRR config cloned from Gitea (ssh://gitea.mk-labs.cloud:2221/rblundon/LCRR.git)
- ~/.jmri symlinked to LCRR repo for GitOps config management
- jmri-gui: X11 remote GUI access (PanelPro/DecoderPro) via ssh -X as jmri user
  - Stops daemon, launches GUI, restarts daemon on exit if layout still on
- jmri user gets login shell + SSH key for GUI sessions
- Full JRE installed (openjdk-21-jre) for AWT/X11 support

talos/talhelper/verify-multipath-config.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+# verify-multipath-config.sh
+# Verify that multipath.conf is properly configured on Talos worker nodes
+# Run from city-hall after applying the fixed configuration
+
+set -e
+
+NODE="${1:-10.1.71.69}"  # Default to jungle-cruise
+echo "=== Verifying multipath configuration on node $NODE ==="
+echo
+
+echo "1. Checking ext-multipathd service status..."
+talosctl services --nodes "$NODE" | grep -E "(STATE|multipathd)" || echo "  ⚠️  Service not found"
+echo
+
+echo "2. Checking if /etc/multipath.conf exists in ext-multipathd container..."
+if talosctl exec --nodes "$NODE" --service ext-multipathd -- cat /etc/multipath.conf &>/dev/null; then
+    echo "  ✅ File exists! Contents:"
+    talosctl exec --nodes "$NODE" --service ext-multipathd -- cat /etc/multipath.conf | head -20
+    echo "  ... (truncated)"
+else
+    echo "  ❌ File does NOT exist"
+    echo "  This means the ExtensionServiceConfig is still not being applied."
+    exit 1
+fi
+echo
+
+echo "3. Checking multipath-tools extension..."
+talosctl get extensions --nodes "$NODE" | grep -E "(NAME|multipath)" || echo "  ⚠️  Extension not found"
+echo
+
+echo "4. Checking for multipath devices..."
+echo "  Running: multipath -ll"
+if talosctl exec --nodes "$NODE" -- multipath -ll 2>/dev/null; then
+    echo "  ✅ Multipath devices detected"
+else
+    echo "  ⚠️  No multipath devices (may be normal if iSCSI not connected yet)"
+fi
+echo
+
+echo "5. Checking ext-multipathd logs (last 20 lines)..."
+talosctl logs --nodes "$NODE" --service ext-multipathd --tail 20
+echo
+
+echo "=== Verification complete ==="
+echo
+echo "Expected results:"
+echo "  ✅ ext-multipathd service: Running"
+echo "  ✅ /etc/multipath.conf: Exists with Pure FlashArray config"
+echo "  ✅ multipath-tools extension: Loaded"
+echo "  ✅ multipath -ll: Shows Pure devices (if iSCSI connected)"
+echo
+echo "If /etc/multipath.conf does NOT exist:"
+echo "  - Verify talhelper genconfig was run"
+echo "  - Check clusterconfig/fastpass-jungle-cruise.yaml for 'kind: ExtensionServiceConfig'"
+echo "  - Ensure it's NOT inside quotes (should be structured YAML, not a string)"