Initial commit

src/screens/screen_base.h

@@ -0,0 +1,11 @@
+#pragma once
+
+// Simple screen enum used as a state machine. Each screen has a render
+// function that is called on refresh, and each screen owns its own last-
+// fetch timestamp so refresh intervals can differ per screen.
+enum class ScreenId {
+    HOME,
+    WEATHER_DETAIL,
+    CALENDAR_DETAIL,
+    MVG
+};