feat: directional wind breeze and painted-terrain Ghibli styling

- Wind strokes now flow in a single prevailing direction (left-to-right breeze)
  with gentle flatness, narrow spread, and subtle tangential sway
- Added floating white specks (WindSpecks) as sunlight pollen/dust motes
- Two of each emitter (valley + ridge) for layered atmosphere
- Terrain: disabled auto_base_texture for flatter painted look, enabled
  overlay texture, bolder macro-variation (yellow-green 0.78/0.90/0.42
  and emerald 0.55/0.75/0.38), sharper material blends

world/jajce/JajceWorld.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=40 format=3]
+[gd_scene load_steps=41 format=3]
 
 [ext_resource type="Terrain3DAssets" path="res://terrain/jajce/assets.tres" id="1_assets"]
 [ext_resource type="PackedScene" path="res://world/resource_nodes/ResourceNode.tscn" id="2_resource"]
@@ -17,17 +17,18 @@
 [ext_resource type="Script" path="res://world/activity/ActivitySite.gd" id="15_activity"]
 [ext_resource type="NavigationMesh" path="res://world/jajce/JajceNavigationMesh.tres" id="16_nav"]
 [ext_resource type="PackedScene" path="res://world/jajce/WindStrokes.tscn" id="19_windstrokes"]
+[ext_resource type="PackedScene" path="res://world/jajce/WindSpecks.tscn" id="20_windspecks"]
 
 [sub_resource type="Terrain3DMaterial" id="Terrain3DMaterial_jajce"]
 _shader_parameters = {
-"auto_base_texture": 1,
-"auto_overlay_texture": 0,
-"auto_slope": 0.68,
-"blend_sharpness": 0.78,
+"auto_base_texture": 0,
+"auto_overlay_texture": 1,
+"auto_slope": 0.62,
+"blend_sharpness": 0.88,
 "enable_macro_variation": true,
-"macro_variation1": Color(0.84, 0.92, 0.55, 1),
-"macro_variation2": Color(0.62, 0.78, 0.48, 1),
-"macro_variation_slope": 0.42
+"macro_variation1": Color(0.78, 0.9, 0.42, 1),
+"macro_variation2": Color(0.55, 0.75, 0.38, 1),
+"macro_variation_slope": 0.48
 }
 world_background = 0
 auto_shader = true
@@ -606,6 +607,10 @@ directional_shadow_max_distance = 180.0
 
 [node name="WindStrokes_Ridge" parent="." instance=ExtResource("19_windstrokes")]
 
+[node name="WindSpecks_Valley" parent="." instance=ExtResource("20_windspecks")]
+
+[node name="WindSpecks_Ridge" parent="." instance=ExtResource("20_windspecks")]
+
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
 environment = SubResource("Environment_greybox")
 

world/jajce/WindSpecks.tscn

@@ -0,0 +1,37 @@
+[gd_scene load_steps=4 format=3]
+
+[sub_resource type="ParticleProcessMaterial" id="ParticleProcessMaterial_specks"]
+lifetime_randomness = 0.8
+spread = 120.0
+flatness = 0.5
+gravity = Vector3(-0.35, 0.25, 0.0)
+initial_velocity_min = 0.2
+initial_velocity_max = 1.2
+scale_min = 0.06
+scale_max = 0.28
+color = Color(1, 0.98, 0.9, 0.3)
+color_ramp = 1
+emission_shape = 1
+emission_box_extents = Vector3(32.0, 14.0, 32.0)
+
+[sub_resource type="StandardMaterial3D" id="Material_speck"]
+albedo_color = Color(1, 0.98, 0.92, 0.3)
+transparency = 1
+shading_mode = 0
+billboard_mode = 1
+cull_mode = 0
+
+[sub_resource type="QuadMesh" id="Mesh_speck"]
+material = SubResource("Material_speck")
+size = Vector2(0.12, 0.12)
+
+[node name="WindSpecks" type="GPUParticles3D"]
+emitting = true
+amount = 40
+lifetime = 6.0
+one_shot = false
+preprocess = 4.0
+speed_scale = 1.0
+local_coords = false
+process_material = SubResource("ParticleProcessMaterial_specks")
+draw_pass_1 = SubResource("Mesh_speck")

world/jajce/WindStrokes.tscn

@@ -7,32 +7,33 @@ shader = ExtResource("1_shader")
 
 [sub_resource type="QuadMesh" id="Mesh_stroke"]
 material = SubResource("ShaderMaterial_stroke")
-size = Vector2(1.8, 0.18)
+size = Vector2(2.4, 0.14)
 
 [sub_resource type="ParticleProcessMaterial" id="ParticleProcessMaterial_wind"]
-lifetime_randomness = 0.5
-spread = 160.0
-gravity = Vector3(0, 0.15, 0)
-initial_velocity_min = 0.6
-initial_velocity_max = 2.5
-angular_velocity_min = -0.6
-angular_velocity_max = 0.6
-radial_accel_min = -0.2
-radial_accel_max = 0.2
-tangential_accel_min = -0.3
-tangential_accel_max = 0.3
-scale_min = 0.5
-scale_max = 1.5
-color = Color(1, 1, 1, 0.5)
+lifetime_randomness = 0.6
+spread = 55.0
+flatness = 0.7
+gravity = Vector3(-0.6, 0.35, 0.0)
+initial_velocity_min = 0.8
+initial_velocity_max = 2.8
+angular_velocity_min = -0.25
+angular_velocity_max = 0.25
+radial_accel_min = 0.0
+radial_accel_max = 0.0
+tangential_accel_min = -0.08
+tangential_accel_max = 0.08
+scale_min = 0.3
+scale_max = 1.2
+color = Color(1, 1, 1, 0.35)
 emission_shape = 1
-emission_box_extents = Vector3(35.0, 10.0, 35.0)
+emission_box_extents = Vector3(28.0, 8.0, 28.0)
 
 [node name="WindStrokes" type="GPUParticles3D"]
 emitting = true
-amount = 18
-lifetime = 4.0
+amount = 24
+lifetime = 5.0
 one_shot = false
-preprocess = 2.0
+preprocess = 3.0
 speed_scale = 1.0
 local_coords = false
 process_material = SubResource("ParticleProcessMaterial_wind")