feat(hub): show server CPU memory disk and network status on monitor page

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_hub_host_status_lib.py

@@ -0,0 +1,58 @@
+"""hub_host_status_lib 单元测试。"""
+from __future__ import annotations
+
+import sys
+import unittest
+from unittest.mock import MagicMock, patch
+
+from hub_host_status_lib import _disk_path, _state, get_host_status
+
+
+class HubHostStatusLibTest(unittest.TestCase):
+    def setUp(self):
+        _state["primed"] = False
+        _state["net_ts"] = 0.0
+        _state["net_sent"] = 0
+        _state["net_recv"] = 0
+
+    def test_disk_path_env_override(self):
+        with patch.dict("os.environ", {"HUB_HOST_DISK_PATH": "/data"}, clear=False):
+            self.assertEqual(_disk_path(), "/data")
+
+    def test_get_host_status_without_psutil(self):
+        import builtins
+
+        real_import = builtins.__import__
+
+        def fake_import(name, globals=None, locals=None, fromlist=(), level=0):
+            if name == "psutil":
+                raise ImportError("no psutil")
+            return real_import(name, globals, locals, fromlist, level)
+
+        with patch("builtins.__import__", side_effect=fake_import):
+            out = get_host_status()
+        self.assertFalse(out.get("ok"))
+        self.assertIn("psutil", out.get("msg", ""))
+
+    def test_get_host_status_payload(self):
+        fake_vm = MagicMock(total=8_000_000_000, used=3_200_000_000, percent=40.0)
+        fake_du = MagicMock(total=100_000_000_000, used=50_000_000_000)
+        fake_net = MagicMock(bytes_sent=1_000_000, bytes_recv=2_000_000)
+        fake_psutil = MagicMock()
+        fake_psutil.cpu_percent.return_value = 12.5
+        fake_psutil.cpu_count.return_value = 4
+        fake_psutil.virtual_memory.return_value = fake_vm
+        fake_psutil.disk_usage.return_value = fake_du
+        fake_psutil.net_io_counters.return_value = fake_net
+        fake_psutil.boot_time.return_value = 1_700_000_000.0
+        with patch.dict(sys.modules, {"psutil": fake_psutil}):
+            out = get_host_status()
+        self.assertTrue(out.get("ok"))
+        self.assertEqual(out["cpu"]["percent"], 12.5)
+        self.assertEqual(out["memory"]["percent"], 40.0)
+        self.assertEqual(out["disk"]["percent"], 50.0)
+        self.assertIn("network", out)
+
+
+if __name__ == "__main__":
+    unittest.main()