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

simulation/SimNPC.gd

@@ -20,7 +20,7 @@ var home_position: Vector3
 
 var is_starving := false
 var starvation_ticks := 0
-var starvation_death_threshold := 20
+var starvation_death_threshold := 600
 var is_dead := false
 
 var task_duration := 0.0

simulation/actions/ActionExecutionSystem.gd

@@ -15,19 +15,21 @@ func advance_npc(npc: SimNPC, village: SimVillage) -> void:
 
 
 func _update_needs(npc: SimNPC, village: SimVillage) -> void:
-	npc.hunger += 3.0 * village.food_modifier
+	npc.hunger += 0.125 * village.food_modifier
 	match npc.task_state:
 		SimNPC.TASK_STATE_IDLE:
-			npc.energy -= 0.5
+			npc.energy -= 0.125
 		SimNPC.TASK_STATE_TRAVELING:
-			npc.energy -= 2.0
+			npc.energy -= 0.5
 		SimNPC.TASK_STATE_WORKING:
 			if npc.current_task == SimulationIds.ACTION_SLEEP:
-				npc.energy = minf(npc.energy + 5.0, 100.0)
+				npc.energy = minf(npc.energy + 1.0, 100.0)
-			elif npc.current_task != SimulationIds.ACTION_REST:
+			elif npc.current_task == SimulationIds.ACTION_REST:
-				npc.energy -= 3.0
+				pass
+			else:
+				npc.energy -= 0.5
 		SimNPC.TASK_STATE_COMPLETE:
-			npc.energy -= 0.25
+			npc.energy -= 0.0625
 	npc.hunger = clamp(npc.hunger, 0.0, 100.0)
 	npc.energy = clamp(npc.energy, 0.0, 100.0)
 	npc.is_starving = npc.hunger >= 90.0

simulation/actions/ActionSelectionSystem.gd

@@ -22,6 +22,31 @@ func select_action(npc: SimNPC, village: SimVillage, time_of_day: float = 0.5) -
 	if npc.is_dead:
 		return null
 
+	if npc.is_starving:
+		if npc.get_inventory_amount(SimulationIds.RESOURCE_FOOD) >= 1.0:
+			return ActionSelectionResult.new(
+				SimulationIds.ACTION_EAT, 1.0, "Starving and carrying food"
+			)
+		if village.food > 0:
+			return ActionSelectionResult.new(
+				SimulationIds.ACTION_WITHDRAW_FOOD, 1.0, "Starving; pantry has food"
+			)
+		return ActionSelectionResult.new(
+			SimulationIds.ACTION_GATHER_FOOD, -1.0, "Starving; must find food"
+		)
+	if npc.hunger > 80.0:
+		if npc.get_inventory_amount(SimulationIds.RESOURCE_FOOD) >= 1.0:
+			return ActionSelectionResult.new(
+				SimulationIds.ACTION_EAT, -1.0, "Critically hungry and carrying food"
+			)
+		if village.food > 0:
+			return ActionSelectionResult.new(
+				SimulationIds.ACTION_WITHDRAW_FOOD, -1.0, "Critically hungry; pantry has food"
+			)
+		return ActionSelectionResult.new(
+			SimulationIds.ACTION_GATHER_FOOD, -1.0, "Critically hungry; must find food"
+		)
+
 	var period := _get_period(time_of_day)
 
 	if period == SchedulePeriod.SLEEP:

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,
+"auto_slope": 0.68,
-"blend_sharpness": 0.82,
+"blend_sharpness": 0.78,
 "enable_macro_variation": true,
-"macro_variation1": Color(0.9, 0.94, 0.82, 1),
+"macro_variation1": Color(0.84, 0.92, 0.55, 1),
-"macro_variation2": Color(0.76, 0.81, 0.7, 1),
+"macro_variation2": Color(0.62, 0.78, 0.48, 1),
-"macro_variation_slope": 0.38
+"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_top_color = Color(0.28, 0.52, 0.72, 1)
-sky_horizon_color = Color(0.82, 0.68, 0.5, 1)
+sky_horizon_color = Color(0.88, 0.74, 0.52, 1)
-ground_bottom_color = Color(0.12, 0.17, 0.12, 1)
+ground_bottom_color = Color(0.18, 0.24, 0.14, 1)
-ground_horizon_color = Color(0.62, 0.55, 0.42, 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_color = Color(0.95, 0.9, 0.76, 1)
-ambient_light_energy = 0.7
+ambient_light_energy = 0.75
 reflected_light_source = 2
 tonemap_mode = 2
 glow_enabled = true
 glow_normalized = true
-glow_intensity = 0.34
+glow_intensity = 0.5
-glow_strength = 0.75
+glow_strength = 0.9
-glow_bloom = 0.08
+glow_bloom = 0.12
 fog_enabled = true
-fog_light_color = Color(0.82, 0.78, 0.66, 1)
+fog_light_color = Color(0.88, 0.84, 0.7, 1)
-fog_light_energy = 0.72
+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_albedo = Color(0.94, 0.88, 0.75, 1)
-volumetric_fog_emission = Color(0.08, 0.065, 0.04, 1)
+volumetric_fog_emission = Color(0.1, 0.07, 0.04, 1)
-volumetric_fog_emission_energy = 0.18
+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_brightness = 1.08
-adjustment_contrast = 1.03
+adjustment_contrast = 1.04
-adjustment_saturation = 1.1
+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")
 

world/jajce/WindStrokes.tscn

@@ -0,0 +1,39 @@
+[gd_scene load_steps=5 format=3]
+
+[ext_resource type="Shader" path="res://world/jajce/materials/wind_stroke.gdshader" id="1_shader"]
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_stroke"]
+shader = ExtResource("1_shader")
+
+[sub_resource type="QuadMesh" id="Mesh_stroke"]
+material = SubResource("ShaderMaterial_stroke")
+size = Vector2(1.8, 0.18)
+
+[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)
+emission_shape = 1
+emission_box_extents = Vector3(35.0, 10.0, 35.0)
+
+[node name="WindStrokes" type="GPUParticles3D"]
+emitting = true
+amount = 18
+lifetime = 4.0
+one_shot = false
+preprocess = 2.0
+speed_scale = 1.0
+local_coords = false
+process_material = SubResource("ParticleProcessMaterial_wind")
+draw_pass_1 = SubResource("Mesh_stroke")

world/jajce/materials/wind_stroke.gdshader

@@ -0,0 +1,14 @@
+shader_type spatial;
+render_mode blend_mix, depth_draw_opaque, cull_disabled, unshaded;
+
+uniform float softness : hint_range(0.0, 1.0) = 0.45;
+uniform vec3 tint : source_color = vec3(0.95, 0.93, 0.88);
+
+void fragment() {
+	float edge_dist = abs(UV.y - 0.5) * 2.0;
+	float alpha = 1.0 - smoothstep(0.0, 1.0, edge_dist);
+	alpha *= smoothstep(0.0, 0.2, UV.x) * smoothstep(0.0, 0.2, 1.0 - UV.x);
+	alpha *= softness * 0.35;
+	ALBEDO = tint;
+	ALPHA = alpha;
+}