fix: revert // to / in deck.gd (GDScript 4 does not support // operator)

The INTEGER_DIVISION warning in deck.gd:19 is a false positive - both
operands are int, so / performs integer division correctly in GDScript 4.
Using // caused a parse error (Expected expression after '/' operator),
which cascaded to GameController/TrainingController resolution failure.

.godot/editor/editor_layout.cfg

@@ -0,0 +1,73 @@
+[docks]
+
+dock_3_selected_tab_idx=0
+dock_4_selected_tab_idx=0
+dock_5_selected_tab_idx=0
+dock_floating={}
+dock_closed=[]
+dock_split_2=0
+dock_split_3=0
+dock_hsplit_1=0
+dock_hsplit_2=280
+dock_hsplit_3=-280
+dock_hsplit_4=0
+dock_9_selected_tab_idx=1
+dock_3="Scene,Import"
+dock_4="FileSystem,History"
+dock_5="Inspector,Signals,Groups"
+dock_9="Output,Debugger,Audio,Animation,Shader Editor,Search Results,AnimationTree,ResourcePreloader,ShaderFile,SpriteFrames,Theme,Polygon,TileSet,TileMap,Replication,GridMap"
+
+[docks/FileSystem]
+
+h_split_offset=240
+v_split_offset=0
+display_mode=0
+file_sort=0
+file_list_display_mode=1
+selected_paths=PackedStringArray("res://")
+uncollapsed_paths=PackedStringArray("Favorites", "res://")
+
+[docks/History]
+
+include_scene=true
+include_global=true
+
+[EditorNode]
+
+open_scenes=PackedStringArray("res://src/ui/scenes/main_menu.tscn")
+current_scene="res://src/ui/scenes/main_menu.tscn"
+bottom_panel_offsets={
+"Audio": -450,
+"Debugger": 0,
+"Output": 0
+}
+selected_default_debugger_tab_idx=0
+selected_main_editor_idx=2
+
+[EditorWindow]
+
+screen=0
+mode="windowed"
+position=Vector2i(1331, 150)
+size=Vector2i(1152, 648)
+
+[ScriptEditor]
+
+open_scripts=["res://src/game/training_controller.gd"]
+selected_script="res://src/game/training_controller.gd"
+open_help=[]
+script_split_offset=200
+list_split_offset=0
+zoom_factor=1.0
+
+[GameView]
+
+floating_window_rect=Rect2i(634, 142, 1292, 740)
+floating_window_screen=0
+
+[ShaderEditor]
+
+open_shaders=[]
+split_offset=200
+selected_shader=""
+text_shader_zoom_factor=1.0