feat(powerman): add PDU outlet identification + rename scripts [#374]

identify-outlets.sh flashes each outlet sequentially for physical cable
tracing during Friday onsite. rename-outlets.sh takes a mapping file
and rewrites powerman.conf node entries. Both shellcheck-clean.

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Assisted-by: Crush:glm-5.2

dcinfra/powerman/rename-outlets.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/bash
+# powerman/rename-outlets.sh — rename PDU outlets in powerman.conf
+#
+# Takes a mapping file (outlet-number:new-name, one per line) and rewrites
+# the node entries in /etc/powerman/powerman.conf on pfv-tsys1, then
+# restarts powermand.
+#
+# Usage:
+#   bash dcinfra/powerman/rename-outlets.sh <mapping-file>
+#
+# Example mapping file:
+#   1:pfv-tsys1
+#   2:pfv-tsys3
+#   3:pfv-tsys4
+#   ...
+set -euo pipefail
+
+PROX_HOST="${PROX_HOST:-pfv-tsys1}"
+REMOTE_SH="$(cd "$(dirname "$0")/../.." && pwd)/tests/remote.sh"
+MAP_FILE="${1:-}"
+
+if [ -z "$MAP_FILE" ] || [ ! -f "$MAP_FILE" ]; then
+  echo "Usage: $0 <mapping-file>"
+  echo "  Format: outlet-number:new-name (one per line)"
+  echo "  Run identify-outlets.sh first to get the mapping."
+  exit 1
+fi
+
+# Build the new node lines
+NODE_LINES=""
+while IFS=: read -r num name; do
+  [ -z "$num" ] && continue
+  NODE_LINES+="node \"$name\" \"cyclades-pm10\" \"$num\""$'\n'
+done < "$MAP_FILE"
+
+# Send to tsys1: backup conf, write new node section, restart powermand
+PROX_HOST="$PROX_HOST" bash "$REMOTE_SH" prox-file - <<REMOTE_SCRIPT
+set -euo pipefail
+cp /etc/powerman/powerman.conf /etc/powerman/powerman.conf.bak.\$(date +%Y%m%d-%H%M%S)
+
+# Strip existing node lines and append new ones
+grep -v '^node "outlet-' /etc/powerman/powerman.conf > /tmp/powerman.conf.new
+cat >> /tmp/powerman.conf.new <<'NODES'
+$(echo -n "$NODE_LINES")
+NODES
+mv /tmp/powerman.conf.new /etc/powerman/powerman.conf
+systemctl restart powerman
+sleep 1
+powerman -l
+REMOTE_SCRIPT
+
+echo "PDU outlets renamed. Verify with: PROX_HOST=$PROX_HOST bash $REMOTE_SH prox 'powerman -q'"