config: enable weather simulation test mode

config.js

@@ -101,9 +101,9 @@ window.CONFIG = {
     // false = live Open-Meteo conditions (also used for the theme choice).
     // true  = cycle sunny -> cloudy -> stormy -> night, useful to compare
     //         all weather looks without waiting on the API.
-    weatherSim: false,            // true cycles sunny/cloudy/stormy/night
+    weatherSim: true,             // test mode: cycles sunny/cloudy/stormy/night
-    weatherSimInterval: 30000,    // ms per weather step when weatherSim is true
+    weatherSimInterval: 15000,    // ms per weather step when weatherSim is true
-    // weatherSim: true, weatherSimInterval: 15000
+    // weatherSim: false, weatherSimInterval: 30000
 
     // ------------------------------------------------------------------
     // Weather data
@@ -538,9 +538,9 @@ window.CONFIG = {
     // time, 1440 = one simulated day per minute. Clock hands, digital readout,
     // weather and sky all use the same clock. Hash overrides: #at=... #speed=...
     day: {
-        startAt: null,            // null = strictly real time
+        startAt: '2026-10-12T18:30', // test clock: evening, then accelerated
-        speed: 1                  // virtual seconds per real second
+        speed: 1440                  // one simulated day per minute
-        // startAt: '2026-10-29T20:56', speed: 1440  // one simulated day per minute
+        // startAt: null, speed: 1   // real time
     },
 
     // ------------------------------------------------------------------