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/backend/routers/system.py

@@ -1,11 +1,30 @@
+import os
 import shutil
 import psutil
 import platform
 import time
+import httpx
 from fastapi import APIRouter
 
 router = APIRouter()
 
+TELEGRAM_BOT_TOKEN = os.environ.get("TELEGRAM_BOT_TOKEN", "")
+TELEGRAM_CHAT_ID = os.environ.get("TELEGRAM_CHAT_ID", "")
+
+
+@router.post("/notify")
+async def send_notification(body: dict):
+    """Send a Telegram notification. Body: {"message": "text"}"""
+    msg = body.get("message", "")
+    if not msg or not TELEGRAM_BOT_TOKEN or not TELEGRAM_CHAT_ID:
+        return {"ok": False, "error": "missing message or Telegram config"}
+    async with httpx.AsyncClient() as client:
+        r = await client.post(
+            f"https://api.telegram.org/bot{TELEGRAM_BOT_TOKEN}/sendMessage",
+            data={"chat_id": TELEGRAM_CHAT_ID, "text": msg, "parse_mode": "Markdown"},
+        )
+    return {"ok": r.status_code == 200}
+
 
 @router.get("/stats")
 def system_stats():