Add Pico dashboard main entrypoint

pico-dashboard/main.py

@@ -0,0 +1,52 @@
+from app import PicoDashboardApp
+from state.app_state import AppState
+from comms.uart_client import UartClient
+from comms.communication_service import CommunicationService
+from hardware.display import Display
+from hardware.buzzer import Buzzer
+from ui.screen_manager import ScreenManager
+from ui.touch_router import TouchRouter
+from ui.renderers import DashboardRenderer
+
+
+class NullUart:
+    def write(self, data):
+        pass
+
+    def any(self):
+        return False
+
+    def read(self):
+        return b""
+
+
+def build_app():
+    state = AppState()
+    uart_client = UartClient(NullUart())
+    comms = CommunicationService(uart_client, state)
+
+    screens = ScreenManager()
+    display = Display()
+    buzzer = Buzzer()
+    touch_router = TouchRouter(screens)
+    dashboard_renderer = DashboardRenderer(display)
+
+    return PicoDashboardApp(
+        app_state=state,
+        communication_service=comms,
+        screen_manager=screens,
+        touch_router=touch_router,
+        display=display,
+        dashboard_renderer=dashboard_renderer,
+        buzzer=buzzer,
+    )
+
+
+def main():
+    app = build_app()
+    app.tick()
+    return app
+
+
+if __name__ == "__main__":
+    main()

tests/test_pico_core.py

@@ -817,3 +817,21 @@ def test_pico_dashboard_app_tick_updates_alarms_and_buzzer():
     assert "fridge_zone_1_high" in app.alarms
     assert buzzer.enabled is True
     assert display.commands
+
+
+def test_pico_main_builds_app():
+    import main
+
+    app = main.build_app()
+
+    assert app.state is not None
+    assert app.comms is not None
+    assert app.screen_manager.current_screen == "dashboard"
+
+
+def test_pico_main_runs_one_tick():
+    import main
+
+    app = main.main()
+
+    assert app is not None