feat(core): implement room navigation, character states, save/load and settings menu

- RoomNavigator autoload: smooth camera pan between floors
- Floor1 and Floor2 placeholder rooms with elevator buttons
- CharacterData Resource with State enum (HEALTHY/SICK/SLEEPING/TIRED)
- Character visual state feedback via ColorRect color
- Main scene loads saved state on startup
- SettingsMenu with music/sfx sliders and game reset
- HUD settings button to open SettingsMenu

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scenes/main/Main.tscn

@@ -1,23 +1,101 @@
-[gd_scene load_steps=4 format=3 uid="uid://cozypaw_main"]
+[gd_scene load_steps=8 format=3 uid="uid://cozypaw_main"]
 
-[ext_resource type="PackedScene" path="res://scenes/rooms/floor0/Reception.tscn" id="1_reception"]
-[ext_resource type="PackedScene" path="res://scenes/characters/Character.tscn" id="2_char"]
-[ext_resource type="PackedScene" path="res://scenes/ui/HUD.tscn" id="3_hud"]
+[ext_resource type="Script" path="res://scripts/main/main.gd" id="1_main"]
+[ext_resource type="PackedScene" path="res://scenes/rooms/floor0/Reception.tscn" id="2_reception"]
+[ext_resource type="PackedScene" path="res://scenes/characters/Character.tscn" id="3_char"]
+[ext_resource type="PackedScene" path="res://scenes/ui/HUD.tscn" id="4_hud"]
+[ext_resource type="PackedScene" path="res://scenes/ui/SettingsMenu.tscn" id="5_settings"]
+[ext_resource type="PackedScene" path="res://scenes/objects/ElevatorButton.tscn" id="6_elevbtn"]
+
+[sub_resource type="CharacterData" id="CharacterData_bunny1"]
+id = "bunny_01"
+display_name = "Bunny"
+species = 0
+state = 0
+current_floor = 0
+position = Vector2(0, 0)
 
 [node name="Main" type="Node2D"]
+script = ExtResource("1_main")
+
+[node name="Camera2D" type="Camera2D" parent="."]
+position = Vector2(640, 360)
+zoom = Vector2(1, 1)
 
 [node name="Hospital" type="Node2D" parent="."]
 
 [node name="Floor0" type="Node2D" parent="Hospital"]
-
-[node name="Reception" parent="Hospital/Floor0" instance=ExtResource("1_reception")]
 position = Vector2(0, 0)
 
+[node name="Reception" parent="Hospital/Floor0" instance=ExtResource("2_reception")]
+position = Vector2(0, 0)
+
+[node name="ElevatorUp0" parent="Hospital/Floor0" instance=ExtResource("6_elevbtn")]
+position = Vector2(1200, 360)
+target_floor = 1
+
+[node name="Floor1" type="Node2D" parent="Hospital"]
+position = Vector2(0, -720)
+
+[node name="Background" type="ColorRect" parent="Hospital/Floor1"]
+color = Color(0.78, 0.88, 0.96, 1)
+size = Vector2(1280, 720)
+position = Vector2(0, 0)
+
+[node name="FloorLabel" type="Label" parent="Hospital/Floor1"]
+offset_left = 560.0
+offset_top = 300.0
+offset_right = 720.0
+offset_bottom = 360.0
+text = "1. OG"
+theme_override_font_sizes/font_size = 32
+
+[node name="FloorRect" type="ColorRect" parent="Hospital/Floor1"]
+color = Color(0.88, 0.80, 0.68, 1)
+size = Vector2(1280, 100)
+position = Vector2(0, 620)
+
+[node name="ElevatorDown1" parent="Hospital/Floor1" instance=ExtResource("6_elevbtn")]
+position = Vector2(1200, 540)
+target_floor = 0
+
+[node name="ElevatorUp1" parent="Hospital/Floor1" instance=ExtResource("6_elevbtn")]
+position = Vector2(1200, 180)
+target_floor = 2
+
+[node name="Floor2" type="Node2D" parent="Hospital"]
+position = Vector2(0, -1440)
+
+[node name="Background" type="ColorRect" parent="Hospital/Floor2"]
+color = Color(0.96, 0.88, 0.96, 1)
+size = Vector2(1280, 720)
+position = Vector2(0, 0)
+
+[node name="FloorLabel" type="Label" parent="Hospital/Floor2"]
+offset_left = 560.0
+offset_top = 300.0
+offset_right = 720.0
+offset_bottom = 360.0
+text = "2. OG"
+theme_override_font_sizes/font_size = 32
+
+[node name="FloorRect" type="ColorRect" parent="Hospital/Floor2"]
+color = Color(0.88, 0.80, 0.68, 1)
+size = Vector2(1280, 100)
+position = Vector2(0, 620)
+
+[node name="ElevatorDown2" parent="Hospital/Floor2" instance=ExtResource("6_elevbtn")]
+position = Vector2(1200, 360)
+target_floor = 1
+
 [node name="Characters" type="Node2D" parent="."]
 
-[node name="Bunny1" parent="Characters" instance=ExtResource("2_char")]
+[node name="Bunny1" parent="Characters" instance=ExtResource("3_char")]
 position = Vector2(300, 400)
+data = SubResource("CharacterData_bunny1")
 
 [node name="UI" type="CanvasLayer" parent="."]
 
-[node name="HUD" parent="UI" instance=ExtResource("3_hud")]
+[node name="HUD" parent="UI" instance=ExtResource("4_hud")]
+
+[node name="SettingsMenu" parent="UI" instance=ExtResource("5_settings")]

scenes/objects/ElevatorButton.tscn

@@ -0,0 +1,29 @@
+[gd_scene load_steps=3 format=3 uid="uid://cozypaw_elevator_btn"]
+
+[ext_resource type="Script" path="res://scripts/objects/elevator_button.gd" id="1_elevbtn"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_elevbtn"]
+size = Vector2(80, 80)
+
+[node name="ElevatorButton" type="Node2D"]
+script = ExtResource("1_elevbtn")
+
+[node name="Visual" type="ColorRect" parent="."]
+color = Color(0.95, 0.75, 0.3, 1)
+size = Vector2(80, 80)
+position = Vector2(-40, -40)
+
+[node name="Label" type="Label" parent="Visual"]
+offset_left = 0.0
+offset_top = 0.0
+offset_right = 80.0
+offset_bottom = 80.0
+horizontal_alignment = 1
+vertical_alignment = 1
+text = "▲"
+
+[node name="CollisionArea" type="Area2D" parent="."]
+input_pickable = true
+
+[node name="CollisionShape" type="CollisionShape2D" parent="CollisionArea"]
+shape = SubResource("RectangleShape2D_elevbtn")

scenes/ui/HUD.tscn

@@ -31,5 +31,19 @@ offset_bottom = 80.0
 text = "♪"
 flat = false
 
+[node name="SettingsButton" type="Button" parent="."]
+anchors_preset = 1
+anchor_left = 1.0
+anchor_top = 0.0
+anchor_right = 1.0
+anchor_bottom = 0.0
+offset_left = -160.0
+offset_top = 16.0
+offset_right = -96.0
+offset_bottom = 80.0
+text = "⚙"
+flat = false
+
 [connection signal="pressed" from="BackButton" to="." method="_on_back_button_pressed"]
 [connection signal="pressed" from="MusicToggle" to="." method="_on_music_toggle_pressed"]
+[connection signal="pressed" from="SettingsButton" to="." method="_on_settings_button_pressed"]

scenes/ui/SettingsMenu.tscn

@@ -0,0 +1,103 @@
+[gd_scene load_steps=2 format=3 uid="uid://cozypaw_settings"]
+
+[ext_resource type="Script" path="res://scripts/systems/settings_menu.gd" id="1_settings"]
+
+[node name="SettingsMenu" type="CanvasLayer"]
+script = ExtResource("1_settings")
+visible = false
+
+[node name="Backdrop" type="ColorRect" parent="."]
+color = Color(0, 0, 0, 0.7)
+anchor_left = 0.0
+anchor_top = 0.0
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = 0.0
+offset_top = 0.0
+offset_right = 0.0
+offset_bottom = 0.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="Panel" type="Panel" parent="."]
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -200.0
+offset_top = -150.0
+offset_right = 200.0
+offset_bottom = 150.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="Title" type="Label" parent="Panel"]
+offset_left = 0.0
+offset_top = 16.0
+offset_right = 400.0
+offset_bottom = 64.0
+horizontal_alignment = 1
+text = "⚙"
+theme_override_font_sizes/font_size = 32
+
+[node name="MusicLabel" type="Label" parent="Panel"]
+offset_left = 24.0
+offset_top = 76.0
+offset_right = 80.0
+offset_bottom = 108.0
+text = "♪"
+theme_override_font_sizes/font_size = 24
+
+[node name="MusicSlider" type="HSlider" parent="Panel"]
+min_value = 0.0
+max_value = 1.0
+step = 0.05
+value = 0.6
+offset_left = 88.0
+offset_top = 76.0
+offset_right = 376.0
+offset_bottom = 108.0
+
+[node name="SfxLabel" type="Label" parent="Panel"]
+offset_left = 24.0
+offset_top = 120.0
+offset_right = 80.0
+offset_bottom = 152.0
+text = "🔊"
+theme_override_font_sizes/font_size = 24
+
+[node name="SfxSlider" type="HSlider" parent="Panel"]
+min_value = 0.0
+max_value = 1.0
+step = 0.05
+value = 1.0
+offset_left = 88.0
+offset_top = 120.0
+offset_right = 376.0
+offset_bottom = 152.0
+
+[node name="ResetButton" type="Button" parent="Panel"]
+offset_left = 24.0
+offset_top = 172.0
+offset_right = 88.0
+offset_bottom = 236.0
+text = "↺"
+theme_override_font_sizes/font_size = 28
+
+[node name="ResetConfirmDialog" type="ConfirmationDialog" parent="Panel"]
+title = "Reset?"
+dialog_text = "Spielstand löschen?"
+
+[node name="CloseButton" type="Button" parent="Panel"]
+offset_left = 312.0
+offset_top = 172.0
+offset_right = 376.0
+offset_bottom = 236.0
+text = "✕"
+theme_override_font_sizes/font_size = 28
+
+[connection signal="value_changed" from="Panel/MusicSlider" to="." method="_on_music_slider_value_changed"]
+[connection signal="value_changed" from="Panel/SfxSlider" to="." method="_on_sfx_slider_value_changed"]
+[connection signal="pressed" from="Panel/ResetButton" to="." method="_on_reset_button_pressed"]
+[connection signal="confirmed" from="Panel/ResetConfirmDialog" to="." method="_on_reset_confirmed"]
+[connection signal="pressed" from="Panel/CloseButton" to="." method="_on_close_button_pressed"]