feat(cloud): remove static credentials and add host console

apps/device-host-agent/tests/test_heartbeat.py

@@ -7,6 +7,7 @@ from cloud.internal_api.models import HeartbeatResponse
 from device.manager import DeviceManager
 from host_agent.config import HostAgentConfig
 from host_agent.heartbeat import HeartbeatSynchronizer, build_device_snapshot
+from host_agent.status import AgentStatusTracker
 
 
 class ConnectableDriver:
@@ -81,3 +82,44 @@ def test_heartbeat_synchronizer_runs_at_configured_interval_until_stopped() -> N
     asyncio.run(scenario())
     assert calls == [["device-a"], ["device-a"], ["device-a"]]
     assert manager.status("device-a") == "busy"
+
+
+def test_sync_once_notifies_status_tracker_and_on_sync_with_device_count() -> None:
+    manager = DeviceManager()
+    manager.register_device(
+        "device-a",
+        lambda: ConnectableDriver(),  # type: ignore[arg-type,return-value]
+    )
+    manager.register_device(
+        "device-b",
+        lambda: ConnectableDriver(),  # type: ignore[arg-type,return-value]
+    )
+
+    class FakeClient:
+        async def heartbeat(self, devices, *, address=None):
+            return HeartbeatResponse(
+                host_id="host-a",
+                accepted_devices=len(devices),
+                received_at=datetime.now(UTC),
+            )
+
+    async def scenario() -> None:
+        tracker = AgentStatusTracker()
+        on_sync_calls: list[int] = []
+        synchronizer = HeartbeatSynchronizer(
+            manager,
+            FakeClient(),  # type: ignore[arg-type]
+            _config(),
+            status_tracker=tracker,
+            on_sync=on_sync_calls.append,
+        )
+
+        await synchronizer.sync_once()
+
+        assert on_sync_calls == [2]
+        last_heartbeat = tracker.snapshot()["last_heartbeat"]
+        assert last_heartbeat is not None
+        assert last_heartbeat["ok"] is True
+        assert last_heartbeat["device_count"] == 2
+
+    asyncio.run(scenario())