Add Pico detail screen view models

tests/test_pico_core.py

@@ -482,3 +482,104 @@ def test_dashboard_view_model_handles_missing_values():
 
     assert vm["battery"]["voltage"] == "--"
     assert vm["fridge"]["zone_1"] == "--"
+
+
+def test_battery_view_model():
+    from ui.detail_view_models import BatteryViewModel
+
+    state = AppState()
+    state.update_from_status({
+        "battery": {
+            "soc": 82,
+            "voltage": 13.2,
+            "current": -6.4,
+            "remaining_ah": 82.0,
+            "runtime_hours": 12.0,
+            "temperature_f": 76.0,
+        }
+    })
+
+    vm = BatteryViewModel(state).as_dict()
+
+    assert vm["soc"] == "82%"
+    assert vm["voltage"] == "13.2V"
+    assert vm["current"] == "-6.4A"
+    assert vm["remaining_ah"] == "82.0Ah"
+    assert vm["runtime_hours"] == "12.0 hr"
+    assert vm["temperature_f"] == "76.0°F"
+
+
+def test_temps_view_model():
+    from ui.detail_view_models import TempsViewModel
+
+    state = AppState()
+    state.update_from_status({
+        "temps": {
+            "fridge_zone_1": 34.5,
+            "fridge_zone_2": 36.0,
+            "rear_seat": 71.2,
+            "outside": None,
+        },
+        "sensor_health": {
+            "fridge_zone_1": True,
+            "fridge_zone_2": True,
+            "rear_seat": True,
+            "outside": False,
+        }
+    })
+
+    rows = TempsViewModel(state).as_list()
+
+    assert rows[0]["label"] == "Fridge Zone 1"
+    assert rows[0]["temperature"] == "34.5°F"
+    assert rows[0]["status"] == "OK"
+
+    assert rows[3]["label"] == "Outside Air"
+    assert rows[3]["temperature"] == "--"
+    assert rows[3]["status"] == "FAULT"
+
+
+def test_power_view_model():
+    from ui.detail_view_models import PowerViewModel
+
+    state = AppState()
+    state.update_from_status({
+        "relays": {
+            "starlink": False,
+            "fridge": True,
+        }
+    })
+
+    vm = PowerViewModel(state).as_dict()
+
+    assert vm["starlink"] == "OFF"
+    assert vm["fridge"] == "ON"
+
+
+def test_system_view_model():
+    from ui.detail_view_models import SystemViewModel
+
+    state = AppState()
+    state.update_from_status({
+        "sensor_health": {
+            "fridge_zone_1": True,
+            "fridge_zone_2": True,
+            "rear_seat": False,
+            "outside": True,
+        },
+        "vehicle": {
+            "ignition_on": False,
+        },
+        "network": {
+            "uart_connected": True,
+            "wifi_enabled": True,
+        }
+    })
+
+    vm = SystemViewModel(state).as_dict()
+
+    assert vm["esp32"] == "Online"
+    assert vm["uart"] == "Connected"
+    assert vm["wifi_api"] == "Available"
+    assert vm["sensors"] == "3 / 4 OK"
+    assert vm["ignition"] == "Off"