feat: enhance magical world ambience

tests/jajce_world_scaffold_test.gd

@@ -81,6 +81,12 @@ func _run() -> void:
 		environment.fog_enabled and environment.sky != null,
 		"Jajce environment should provide sky and restrained valley fog"
 	)
+	_check(
+		environment.glow_enabled
+		and environment.volumetric_fog_enabled
+		and environment.adjustment_enabled,
+		"WorldEnvironment should provide bounded glow, depth haze, and color grading"
+	)
 	_check(
 		world.has_node("VillageRoot/Mill") and world.has_node("VillageRoot/Bridge"),
 		"VillageRoot should include the mill and bridge blockouts"

world/jajce/JajceWorld.tscn

@@ -54,16 +54,36 @@ sky_material = SubResource("SkyMaterial_jajce")
 [sub_resource type="Environment" id="Environment_greybox"]
 background_mode = 2
 sky = SubResource("Sky_jajce")
+background_energy_multiplier = 0.9
 ambient_light_source = 3
-ambient_light_color = Color(0.88, 0.83, 0.73, 1)
+ambient_light_color = Color(0.91, 0.85, 0.72, 1)
-ambient_light_energy = 0.62
+ambient_light_energy = 0.7
 reflected_light_source = 2
 tonemap_mode = 2
+glow_enabled = true
+glow_normalized = true
+glow_intensity = 0.34
+glow_strength = 0.75
+glow_bloom = 0.08
 fog_enabled = true
-fog_light_color = Color(0.7, 0.76, 0.74, 1)
+fog_light_color = Color(0.82, 0.78, 0.66, 1)
-fog_light_energy = 0.65
+fog_light_energy = 0.72
-fog_density = 0.0025
+fog_density = 0.002
-fog_sky_affect = 0.35
+fog_height = -2.0
+fog_height_density = 0.08
+fog_aerial_perspective = 0.35
+fog_sky_affect = 0.28
+volumetric_fog_enabled = true
+volumetric_fog_density = 0.006
+volumetric_fog_albedo = Color(0.9, 0.84, 0.72, 1)
+volumetric_fog_emission = Color(0.08, 0.065, 0.04, 1)
+volumetric_fog_emission_energy = 0.18
+volumetric_fog_length = 96.0
+volumetric_fog_detail_spread = 1.6
+adjustment_enabled = true
+adjustment_brightness = 1.04
+adjustment_contrast = 1.03
+adjustment_saturation = 1.1
 
 [node name="JajceWorld" type="Node3D"]
 script = ExtResource("3_world")