feat: starvation balance rework and Ghibli wind-stroke visuals

- Reduce hunger rate to 0.125/tick (~25/day) for ~6-7 day death timeline
- Slow energy drain: idle 0.125, travel 0.5, work 0.5, complete 0.0625/tick
- Use exact binary fractions for all rates to preserve float precision in save/load
- Starving/critically-hungry NPCs always override sleep to seek food first
- Extend starvation death threshold from 20 to 600 ticks (~3 days of starvation)
- Add calligraphy-style wind stroke particles (WindStrokes scene + shader)
- Two wind stroke emitters in valley and ridge for Ghibli atmosphere
- Rework terrain macro-variation colors for vibrant warm-green palette
- Enhance environment: stronger glow/bloom, higher saturation, warmer sky/fog/ambient

world/jajce/JajceWorld.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=39 format=3]
+[gd_scene load_steps=40 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"]
@@ -16,17 +16,18 @@
 [ext_resource type="PackedScene" path="res://world/storage/StorageNode.tscn" id="14_storage"]
 [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"]
 
 [sub_resource type="Terrain3DMaterial" id="Terrain3DMaterial_jajce"]
 _shader_parameters = {
 "auto_base_texture": 1,
 "auto_overlay_texture": 0,
-"auto_slope": 0.72,
-"blend_sharpness": 0.82,
+"auto_slope": 0.68,
+"blend_sharpness": 0.78,
 "enable_macro_variation": true,
-"macro_variation1": Color(0.9, 0.94, 0.82, 1),
-"macro_variation2": Color(0.76, 0.81, 0.7, 1),
-"macro_variation_slope": 0.38
+"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
 }
 world_background = 0
 auto_shader = true
@@ -96,10 +97,10 @@ material = SubResource("Material_site_canvas")
 size = Vector3(2.9, 0.08, 1.4)
 
 [sub_resource type="ProceduralSkyMaterial" id="SkyMaterial_jajce"]
-sky_top_color = Color(0.23, 0.43, 0.62, 1)
-sky_horizon_color = Color(0.82, 0.68, 0.5, 1)
-ground_bottom_color = Color(0.12, 0.17, 0.12, 1)
-ground_horizon_color = Color(0.62, 0.55, 0.42, 1)
+sky_top_color = Color(0.28, 0.52, 0.72, 1)
+sky_horizon_color = Color(0.88, 0.74, 0.52, 1)
+ground_bottom_color = Color(0.18, 0.24, 0.14, 1)
+ground_horizon_color = Color(0.68, 0.6, 0.44, 1)
 sun_angle_max = 18.0
 
 [sub_resource type="Sky" id="Sky_jajce"]
@@ -110,18 +111,18 @@ background_mode = 2
 sky = SubResource("Sky_jajce")
 background_energy_multiplier = 0.9
 ambient_light_source = 3
-ambient_light_color = Color(0.91, 0.85, 0.72, 1)
-ambient_light_energy = 0.7
+ambient_light_color = Color(0.95, 0.9, 0.76, 1)
+ambient_light_energy = 0.75
 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
+glow_intensity = 0.5
+glow_strength = 0.9
+glow_bloom = 0.12
 fog_enabled = true
-fog_light_color = Color(0.82, 0.78, 0.66, 1)
-fog_light_energy = 0.72
+fog_light_color = Color(0.88, 0.84, 0.7, 1)
+fog_light_energy = 0.78
 fog_density = 0.002
 fog_height = -2.0
 fog_height_density = 0.08
@@ -129,15 +130,15 @@ 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_albedo = Color(0.94, 0.88, 0.75, 1)
+volumetric_fog_emission = Color(0.1, 0.07, 0.04, 1)
+volumetric_fog_emission_energy = 0.22
 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
+adjustment_brightness = 1.08
+adjustment_contrast = 1.04
+adjustment_saturation = 1.25
 
 [sub_resource type="StandardMaterial3D" id="Material_guard"]
 albedo_color = Color(0.55, 0.45, 0.35, 1)
@@ -601,6 +602,10 @@ light_energy = 1.45
 shadow_enabled = true
 directional_shadow_max_distance = 180.0
 
+[node name="WindStrokes_Valley" parent="." instance=ExtResource("19_windstrokes")]
+
+[node name="WindStrokes_Ridge" parent="." instance=ExtResource("19_windstrokes")]
+
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]
 environment = SubResource("Environment_greybox")