config: test sea-level cloud deck

config.js

@@ -329,8 +329,8 @@ window.CONFIG = {
     // altitude so aircraft fly above the deck.
     clouds: {
         enabled: true,            // false removes the volumetric cloud deck
-        top: 0.25,                // ~3.2 km; lower deck pushes the cloud horizon outward
-        bottom: -0.2,             // ~-2.6 km (deck base slightly below terrain)
+        top: 0.0,                 // sea-level deck top; pushes the cloud horizon outward
+        bottom: -0.6,             // ~-7.7 km; thicker deck without raising the top
         nearFade: {
             start: 0.05,          // world units: clouds fade out very close to camera
             end: 0.6              // full density from this distance onward