Add proper weather forecast screen

lib/Weather/WeatherIcons.h

@@ -1,6 +1,12 @@
 #pragma once
 #include <cstdint>
 
+// Set to 1 (for example via build flag -DWEATHER_ENABLE_SMALL_ICONS=1)
+// to include 24x24 weather icon assets and API.
+#ifndef WEATHER_ENABLE_SMALL_ICONS
+#define WEATHER_ENABLE_SMALL_ICONS 0
+#endif
+
 // Weather icon size constants
 constexpr int WEATHER_ICON_LARGE = 48;  // Large icon for current weather
 constexpr int WEATHER_ICON_SMALL = 24;  // Small icon for daily forecast
@@ -73,7 +79,9 @@ const char* getWeatherDescription(int wmoCode);
 const uint8_t* getWeatherIconLarge(WeatherIconType type);
 
 // Get the appropriate small icon bitmap (24x24, 1-bit, MSB first)
+#if WEATHER_ENABLE_SMALL_ICONS
 const uint8_t* getWeatherIconSmall(WeatherIconType type);
+#endif
 
 // Wind direction arrow text (N, NE, E, SE, S, SW, W, NW)
 const char* getWindDirectionText(int degrees);