Revert "config: reduce far cloud softening"

This reverts commit 6bedc2c95c.

config.js

@@ -335,14 +335,6 @@ window.CONFIG = {
             start: 0.35,          // world units: clouds fade out very close to camera
             end: 2.5              // full density from this distance onward
         },
-        // Far softening reduces detail/noise at long view distances. Lower
-        // max keeps the deck denser near the horizon and can remove the
-        // transparent ring around the terrain edge.
-        farSoft: {
-            start: 4,             // world units where far softening begins
-            end: 20,              // world units where max softening is reached
-            max: 0.35             // 1 = old behaviour, 0 = no far softening
-        },
         // Delay the volumetric cloud pass until the DEM/terrain mesh is
         // ready. This avoids clouds appearing over an unfinished ground model.
         waitForTerrain: true,     // false = draw clouds immediately