Add optional AI generation, MQTT, OAuth refresh and calendar recurrence

tests/test_device_events.py

@@ -0,0 +1,31 @@
+from pigway_frame_flow.models import Power
+
+
+def test_observer_records_only_changes(service, monkeypatch):
+    driver = service.registry.get("living-room")
+    baseline = driver.device()
+    monkeypatch.setattr(driver, "device", lambda: baseline)
+    service.device_observer.tick()
+    before = len(service.db.all("SELECT * FROM events"))
+    service.device_observer.tick()
+    assert len(service.db.all("SELECT * FROM events")) == before
+    changed = baseline.model_copy(
+        update={"status": "offline", "power": Power(battery_percent=10, charging=False)}
+    )
+    monkeypatch.setattr(driver, "device", lambda: changed)
+    service.device_observer.tick()
+    assert {r["event_type"] for r in service.db.all("SELECT * FROM events")} >= {
+        "device.offline",
+        "device.low_battery",
+    }
+
+
+def test_cloud_failure_is_not_device_offline(service, monkeypatch):
+    driver = service.registry.get("living-room")
+
+    def fail():
+        raise RuntimeError("cloud failure")
+
+    monkeypatch.setattr(driver, "device", fail)
+    service.device_observer.tick()
+    assert not service.db.all("SELECT * FROM events")