Add OpenClaw, backup automation, health checks, Telegram notifications

Phase 6: OpenClaw docker-compose (port 3100) with health check
Phase 9: Enhanced backup.sh with full DB/config coverage + Telegram alerts
Phase 10: Health checks on all compose files, /api/system/notify endpoint

dashboard/docker-compose.yml

@@ -32,9 +32,16 @@ services:
       - VOLUME_ROOT=/volume1
       - SSH_HOST=host.docker.internal
       - SSH_USER=zjgump
+      - TELEGRAM_BOT_TOKEN=${TELEGRAM_BOT_TOKEN:-}
+      - TELEGRAM_CHAT_ID=${TELEGRAM_CHAT_ID:-}
     volumes:
       - /volume1:/volume1
       - ./ssh/dashboard_terminal:/app/ssh/id_ed25519:ro
+    healthcheck:
+      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:4000/api/system/stats')"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
     extra_hosts:
       - "host.docker.internal:host-gateway"
     networks: