feat: Implement a new lobby system with configurable match duration, game over screen, and core game state management.

scenes/main.tscn

@@ -23,6 +23,22 @@
 [ext_resource type="StyleBox" uid="uid://cdhnwvcklbyl8" path="res://assets/styles/ribbon_hovered_gui.tres" id="19_w1rqq"]
 [ext_resource type="StyleBox" uid="uid://3yog1weaqhxb" path="res://assets/styles/ribbon_unselected_gui.tres" id="20_q6bc1"]
 
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_playerboard"]
+content_margin_left = 8.0
+content_margin_top = 8.0
+content_margin_right = 8.0
+content_margin_bottom = 8.0
+bg_color = Color(0.08, 0.08, 0.12, 0.9)
+border_width_left = 1
+border_width_top = 1
+border_width_right = 1
+border_width_bottom = 1
+border_color = Color(0.3, 0.3, 0.4, 0.8)
+corner_radius_top_left = 8
+corner_radius_top_right = 8
+corner_radius_bottom_right = 8
+corner_radius_bottom_left = 8
+
 [sub_resource type="StyleBoxFlat" id="StyleBoxFlat_1cewu"]
 
 [sub_resource type="StyleBoxTexture" id="StyleBoxTexture_5oeq4"]
@@ -30,22 +46,6 @@ texture = ExtResource("13_ahjgs")
 
 [sub_resource type="StyleBoxEmpty" id="StyleBoxEmpty_s1l63"]
 
-[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_playerboard"]
-bg_color = Color(0.08, 0.08, 0.12, 0.9)
-border_color = Color(0.3, 0.3, 0.4, 0.8)
-border_width_left = 1
-border_width_top = 1
-border_width_right = 1
-border_width_bottom = 1
-corner_radius_top_left = 8
-corner_radius_top_right = 8
-corner_radius_bottom_right = 8
-corner_radius_bottom_left = 8
-content_margin_left = 8.0
-content_margin_top = 8.0
-content_margin_right = 8.0
-content_margin_bottom = 8.0
-
 [node name="Main" type="Node3D"]
 script = ExtResource("1_xcpe3")
 
@@ -77,26 +77,31 @@ fov = 35.5
 size = 23.0
 
 [node name="NetworkPanel" type="Panel" parent="."]
-anchors_preset = 4
-anchor_top = 0.5
-anchor_bottom = 0.5
-offset_left = 1208.0
-offset_top = 280.0
-offset_right = 1344.0
-offset_bottom = 333.0
-grow_vertical = 2
+anchors_preset = 5
+anchor_left = 0.5
+anchor_right = 0.5
+offset_left = -185.0
+offset_top = 25.0
+offset_right = 185.0
+offset_bottom = 78.0
+grow_horizontal = 2
 theme_override_styles/panel = ExtResource("5_dvx6y")
 
-[node name="NetworkInfo" type="VBoxContainer" parent="NetworkPanel"]
-layout_mode = 0
-offset_left = 8.0
-offset_right = 124.0
-offset_bottom = 50.0
+[node name="NetworkInfo" type="HBoxContainer" parent="NetworkPanel"]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_constants/separation = 50
+alignment = 1
 
 [node name="NetworkSideDisplay" type="Label" parent="NetworkPanel/NetworkInfo"]
 layout_mode = 2
 text = "Network Side"
 horizontal_alignment = 1
+vertical_alignment = 1
 
 [node name="UniquePeerID" type="Label" parent="NetworkPanel/NetworkInfo"]
 layout_mode = 2
@@ -108,10 +113,10 @@ vertical_alignment = 1
 anchors_preset = 4
 anchor_top = 0.5
 anchor_bottom = 0.5
-offset_left = 10.0
-offset_top = -120.0
-offset_right = 216.0
-offset_bottom = 120.0
+offset_left = 19.0
+offset_top = -233.0
+offset_right = 232.0
+offset_bottom = 7.0
 grow_vertical = 2
 theme_override_styles/panel = SubResource("StyleBoxFlat_playerboard")
 
@@ -120,10 +125,10 @@ clip_contents = true
 anchors_preset = 4
 anchor_top = 0.5
 anchor_bottom = 0.5
-offset_left = 18.0
-offset_top = -88.0
-offset_right = 208.0
-offset_bottom = 102.0
+offset_left = 28.0
+offset_top = -199.0
+offset_right = 224.0
+offset_bottom = -3.0
 grow_vertical = 2
 size_flags_horizontal = 3
 columns = 5
@@ -978,7 +983,43 @@ grow_horizontal = 2
 grow_vertical = 2
 texture = ExtResource("9_6gcb6")
 
+[node name="PowerUpBar" type="PanelContainer" parent="."]
+anchors_preset = 4
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = 29.0
+offset_top = -228.0
+offset_right = 149.0
+offset_bottom = -202.0
+grow_vertical = 2
+
+[node name="HBox" type="HBoxContainer" parent="PowerUpBar"]
+layout_mode = 2
+theme_override_constants/separation = 4
+
+[node name="PowerLabel" type="Label" parent="PowerUpBar/HBox"]
+layout_mode = 2
+theme_override_font_sizes/font_size = 18
+text = "⚡"
+
+[node name="Segment0" type="Panel" parent="PowerUpBar/HBox"]
+custom_minimum_size = Vector2(20, 16)
+layout_mode = 2
+
+[node name="Segment1" type="Panel" parent="PowerUpBar/HBox"]
+custom_minimum_size = Vector2(20, 16)
+layout_mode = 2
+
+[node name="Segment2" type="Panel" parent="PowerUpBar/HBox"]
+custom_minimum_size = Vector2(20, 16)
+layout_mode = 2
+
+[node name="Segment3" type="Panel" parent="PowerUpBar/HBox"]
+custom_minimum_size = Vector2(20, 16)
+layout_mode = 2
+
 [node name="ActionMenu" type="Control" parent="."]
+visible = false
 layout_mode = 3
 anchors_preset = 3
 anchor_left = 1.0
@@ -9334,9 +9375,9 @@ anchor_top = 1.0
 anchor_right = 0.5
 anchor_bottom = 1.0
 offset_left = -200.0
-offset_top = -99.0
+offset_top = -87.0
 offset_right = 200.0
-offset_bottom = -41.0
+offset_bottom = -53.0
 grow_horizontal = 2
 grow_vertical = 0
 theme_override_styles/panel = ExtResource("5_dvx6y")
@@ -9352,57 +9393,22 @@ theme_override_constants/margin_bottom = 5
 layout_mode = 2
 theme_override_constants/separation = 4
 
-[node name="PowerUpBar" type="PanelContainer" parent="."]
-anchors_preset = 4
-anchor_top = 0.5
-anchor_bottom = 0.5
-offset_left = 18.0
-offset_top = -115.0
-offset_right = 110.0
-offset_bottom = -92.0
-grow_vertical = 2
-
-[node name="HBox" type="HBoxContainer" parent="PowerUpBar"]
-layout_mode = 2
-theme_override_constants/separation = 4
-
-[node name="PowerLabel" type="Label" parent="PowerUpBar/HBox"]
-layout_mode = 2
-theme_override_font_sizes/font_size = 18
-text = "⚡"
-
-[node name="Segment0" type="Panel" parent="PowerUpBar/HBox"]
-custom_minimum_size = Vector2(20, 16)
-layout_mode = 2
-
-[node name="Segment1" type="Panel" parent="PowerUpBar/HBox"]
-custom_minimum_size = Vector2(20, 16)
-layout_mode = 2
-
-[node name="Segment2" type="Panel" parent="PowerUpBar/HBox"]
-custom_minimum_size = Vector2(20, 16)
-layout_mode = 2
-
-[node name="Segment3" type="Panel" parent="PowerUpBar/HBox"]
-custom_minimum_size = Vector2(20, 16)
-layout_mode = 2
-
 [node name="LeaderboardPanel" type="PanelContainer" parent="."]
 anchors_preset = 1
 anchor_left = 1.0
 anchor_right = 1.0
-offset_left = -210.0
-offset_top = 80.0
-offset_right = -10.0
-offset_bottom = 280.0
+offset_left = -218.0
+offset_top = 15.0
+offset_right = -18.0
+offset_bottom = 215.0
 grow_horizontal = 0
 
 [node name="MarginContainer" type="MarginContainer" parent="LeaderboardPanel"]
 layout_mode = 2
-theme_override_constants/margin_left = 8
-theme_override_constants/margin_top = 8
-theme_override_constants/margin_right = 8
-theme_override_constants/margin_bottom = 8
+theme_override_constants/margin_left = 18
+theme_override_constants/margin_top = 18
+theme_override_constants/margin_right = 18
+theme_override_constants/margin_bottom = 18
 
 [node name="VBox" type="VBoxContainer" parent="LeaderboardPanel/MarginContainer"]
 layout_mode = 2