add remove.sh for uninstalling running nodes

remove.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+# remove.sh — uninstall a running Wallarm node
+set -e
+NAME="${1:-}"
+if [ -z "$NAME" ]; then
+    echo "Usage: $0 <node-name>"
+    echo "       $0 --all       Remove all nodes"
+    exit 1
+fi
+
+if [ "$NAME" = "--all" ]; then
+    docker ps -q --filter 'name=wallarm-' | xargs -r docker rm -f
+    rm -f /opt/fw/app/state.json
+    echo "All nodes removed."
+else
+    docker rm -f "wallarm-${NAME}" 2>/dev/null
+    python3 -c "
+import json
+try:
+    with open('/opt/fw/app/state.json') as f: s = json.load(f)
+    s['nodes'] = [n for n in s.get('nodes',[]) if n['name'] != '${NAME}']
+    with open('/opt/fw/app/state.json','w') as f: json.dump(s, f, indent=2)
+except: pass
+" 2>/dev/null || true
+    echo "Node ${NAME} removed."
+fi