Center menu button labels: clear stale Main.tscn overrides

Summary.tscn was correctly set up (Label anchored to full button rect,
horizontal/vertical_alignment = 1). But Main.tscn — which instances
Summary.tscn as UI_summary — had per-Label overrides that reset the
anchors back to 0 and shrunk the Label rect to 1x23 px (legacy from
Godot 3 where margin-based positioning was the default), making the
text render in the top-left 1 px corner.

Drop the layout_mode=0 / anchor_right=0 / anchor_bottom=0 / offset_*
overrides on each ButtonPuzzle/Setting/Credits/Quit Label so they
inherit Summary.tscn's full-rect anchors and the centered alignment
becomes visible.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scenes/Main.tscn

@@ -50,29 +50,16 @@ layout_mode = 2
 layout_mode = 2
 
 [node name="Label" parent="MarginContainer/HBoxContainer/UI_summary/PanelWood/VBoxContainer/ButtonPuzzle" index="0"]
-layout_mode = 0
-anchor_right = 0.0
-anchor_bottom = 0.0
-offset_right = 1.0
-offset_bottom = 23.0
-grow_horizontal = 1
-grow_vertical = 1
 
 [node name="ButtonSetting" parent="MarginContainer/HBoxContainer/UI_summary/PanelWood/VBoxContainer" index="2"]
 layout_mode = 2
 
 [node name="Label" parent="MarginContainer/HBoxContainer/UI_summary/PanelWood/VBoxContainer/ButtonSetting" index="0"]
-layout_mode = 0
-anchor_right = 0.0
-anchor_bottom = 0.0
 
 [node name="ButtonCredits" parent="MarginContainer/HBoxContainer/UI_summary/PanelWood/VBoxContainer" index="3"]
 layout_mode = 2
 
 [node name="Label" parent="MarginContainer/HBoxContainer/UI_summary/PanelWood/VBoxContainer/ButtonCredits" index="0"]
-layout_mode = 0
-anchor_right = 0.0
-anchor_bottom = 0.0
 
 [node name="MarginContainer" parent="MarginContainer/HBoxContainer/UI_summary/PanelWood/VBoxContainer" index="4"]
 layout_mode = 2
@@ -81,9 +68,6 @@ layout_mode = 2
 layout_mode = 2
 
 [node name="Label" parent="MarginContainer/HBoxContainer/UI_summary/PanelWood/VBoxContainer/ButtonQuit" index="0"]
-layout_mode = 0
-anchor_right = 0.0
-anchor_bottom = 0.0
 
 [node name="ContainerVersion" parent="MarginContainer/HBoxContainer/UI_summary/PanelWood/VBoxContainer" index="6"]
 layout_mode = 2

scenes/UI/summary/Summary.tscn

@@ -228,21 +228,19 @@ __meta__ = {
 }
 
 [node name="Label" type="Label" parent="PanelWood/VBoxContainer/ButtonPuzzle"]
+layout_mode = 1
+anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
-grow_horizontal = 2
+offset_left = 0.0
-grow_vertical = 2
+offset_top = 0.0
-size_flags_horizontal = 7
+offset_right = 0.0
-size_flags_vertical = 3
+offset_bottom = 0.0
 theme_override_fonts/font = ExtResource( 4 )
 theme_override_font_sizes/font_size = 46
 text = "Puzzles"
 horizontal_alignment = 1
 vertical_alignment = 1
-__meta__ = {
-"_edit_use_anchors_": false,
-"_editor_description_": ""
-}
 
 [node name="ButtonSetting" type="TextureButton" parent="PanelWood/VBoxContainer"]
 offset_top = 408.0
@@ -259,6 +257,8 @@ __meta__ = {
 }
 
 [node name="Label" type="Label" parent="PanelWood/VBoxContainer/ButtonSetting"]
+layout_mode = 1
+anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
 size_flags_horizontal = 7
@@ -289,6 +289,8 @@ __meta__ = {
 }
 
 [node name="Label" type="Label" parent="PanelWood/VBoxContainer/ButtonCredits"]
+layout_mode = 1
+anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
 size_flags_horizontal = 7
@@ -324,6 +326,8 @@ __meta__ = {
 }
 
 [node name="Label" type="Label" parent="PanelWood/VBoxContainer/ButtonQuit"]
+layout_mode = 1
+anchors_preset = 15
 anchor_right = 1.0
 anchor_bottom = 1.0
 size_flags_horizontal = 7