show-status: footer listing fenced nodes (maintenance windows)

Fenced nodes are dropped from COMPOSE_FILE so show-status silently omitted
them - a fenced-but-running node looked 'gone'. rpc-update now writes
/root/rpc/.fenced (node | until | reason | owner per active window); print
it as a footer.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

show-status.sh

@@ -79,6 +79,16 @@ for pid in "${pids[@]}"; do
     wait "$pid"
 done
 
+# Fenced nodes (fleet-state maintenance windows) are dropped from COMPOSE_FILE
+# by rpc-update, so they never appear above even though their containers keep
+# running. The .fenced marker is written by the same rpc-update task that
+# fences them and is rewritten every reconcile (empty once windows expire).
+if [ -s "$BASEPATH/.fenced" ]; then
+    echo ""
+    echo "Fenced (maintenance window - running but unmanaged, not checked above):"
+    sed 's/^/  /' "$BASEPATH/.fenced"
+fi
+
 # If any invocation failed, return a failure exit code
 if $any_failure; then
     exit 1