weather: fetch and expose precipitation and snowfall

config.js

@@ -105,6 +105,19 @@ window.CONFIG = {
     weatherSimInterval: 30000,    // ms per weather step when weatherSim is true
     // weatherSim: true, weatherSimInterval: 15000
 
+    // ------------------------------------------------------------------
+    // Weather data
+    // ------------------------------------------------------------------
+    // Open-Meteo fields used by the scene. These knobs only control which
+    // optional weather values are requested and exposed as window.__currentWeather.
+    weather: {
+        precipitation: true,      // mm/h total precipitation
+        snowfall: true,           // cm/h snowfall
+        hourly: true,             // use hourly values for the simulated clock
+        // weather: { precipitation: false, snowfall: false, hourly: false }
+        // weather: { precipitation: true, snowfall: true }
+    },
+
     // ------------------------------------------------------------------
     // Tiles and caches
     // ------------------------------------------------------------------