fix: add proxy support to httpx to allow Telegram API requests

dashboard/backend/main.py

@@ -28,7 +28,8 @@ async def monitor_containers():
                         msg = f"⚠️ *Container Alert* ⚠️\nContainer `{c.name}` just stopped unexpectedly (Status: {current_status})."
                         # Use httpx directly as system.send_notification expects a FastAPI request object usually
                         if TELEGRAM_BOT_TOKEN and TELEGRAM_CHAT_ID:
-                            async with httpx.AsyncClient() as hc:
+                            proxy_url = os.environ.get("HTTP_PROXY") or os.environ.get("http_proxy")
+                            async with httpx.AsyncClient(proxy=proxy_url) as hc:
                                 await hc.post(
                                     f"https://api.telegram.org/bot{TELEGRAM_BOT_TOKEN}/sendMessage",
                                     data={"chat_id": TELEGRAM_CHAT_ID, "text": msg, "parse_mode": "Markdown"},

dashboard/backend/routers/system.py

@@ -16,7 +16,8 @@ async def send_notification(body: dict):
     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:
+    proxy_url = os.environ.get("HTTP_PROXY") or os.environ.get("http_proxy")
+    async with httpx.AsyncClient(proxy=proxy_url) 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"},