Tidy beta landing page and qBittorrent status

backend/app/clients/qbittorrent.py

@@ -23,7 +23,9 @@ class QBittorrentClient(ApiClient):
             headers={"Referer": self.base_url},
         )
         response.raise_for_status()
-        if response.text.strip().lower() != "ok.":
+        text = response.text.strip().lower()
+        has_session_cookie = any(name.upper().startswith("QBT_SID") for name in client.cookies.keys())
+        if text not in {"ok.", ""} or (text == "" and not has_session_cookie):
             raise RuntimeError("qBittorrent login failed")
 
     async def _get(self, path: str, params: Optional[Dict[str, Any]] = None) -> Optional[Any]:

backend/tests/test_backend_quality.py

@@ -3,6 +3,7 @@ import tempfile
 import unittest
 from unittest.mock import AsyncMock, patch
 
+import httpx
 from fastapi import HTTPException
 from starlette.requests import Request
 
@@ -97,6 +98,19 @@ class NetworkSecurityTests(unittest.TestCase):
 
 
 class ServiceStatusTests(unittest.IsolatedAsyncioTestCase):
+    async def test_qbittorrent_login_accepts_modern_empty_response_with_session_cookie(self) -> None:
+        class FakeClient:
+            def __init__(self) -> None:
+                self.cookies = httpx.Cookies()
+
+            async def post(self, *_args, **_kwargs) -> httpx.Response:
+                self.cookies.set("QBT_SID_8080", "session")
+                return httpx.Response(204, request=httpx.Request("POST", "http://10.0.0.2:8080/api/v2/auth/login"))
+
+        client = status_router.QBittorrentClient("http://10.0.0.2:8080", "admin", "secret")
+
+        await client._login(FakeClient())
+
     async def test_qbittorrent_incomplete_credentials_report_degraded_when_reachable(self) -> None:
         client = status_router.QBittorrentClient("http://10.0.0.2:8080", "admin", None)
         with patch.object(client, "is_webui_reachable", new=AsyncMock(return_value=True)):