style: apply gdformat formatting across the entire project

Auto-format all GDScript files using gdformat from gdtoolkit.
This is a baseline formatting pass to ensure consistent style:

- Normalizes indentation and spacing
- Wraps long lines to 100 characters
- Removes trailing whitespace
- Standardizes blank lines between functions

68 files reformatted, 8 files left unchanged (3rd-party addon files
with parse errors excluded).

addons/terrain_3d/menu/terrain_menu.gd

@@ -2,7 +2,6 @@
 # Menu for Terrain3D
 extends HBoxContainer
 
-
 const DirectoryWizard: Script = preload("res://addons/terrain_3d/menu/directory_setup.gd")
 const Packer: Script = preload("res://addons/terrain_3d/menu/channel_packer.gd")
 const Baker: Script = preload("res://addons/terrain_3d/menu/baker.gd")
@@ -32,17 +31,17 @@ func _enter_tree() -> void:
 	baker.plugin = plugin
 	add_child(directory_setup)
 	add_child(baker)
-	
+
 	menu_button.text = "Terrain3D"
-	menu_button.get_popup().add_item("Directory Setup...", 	MENU_DIRECTORY_SETUP)
-	menu_button.get_popup().add_item("Pack Textures...", MENU_PACK_TEXTURES)	
+	menu_button.get_popup().add_item("Directory Setup...", MENU_DIRECTORY_SETUP)
+	menu_button.get_popup().add_item("Pack Textures...", MENU_PACK_TEXTURES)
 	menu_button.get_popup().add_separator("", MENU_SEPARATOR)
 	menu_button.get_popup().add_item("Bake ArrayMesh...", MENU_BAKE_ARRAY_MESH)
 	menu_button.get_popup().add_item("Bake Occluder3D...", MENU_BAKE_OCCLUDER)
 	menu_button.get_popup().add_separator("", MENU_SEPARATOR2)
 	menu_button.get_popup().add_item("Set up Navigation...", MENU_SET_UP_NAVIGATION)
 	menu_button.get_popup().add_item("Bake NavMesh...", MENU_BAKE_NAV_MESH)
-	
+
 	menu_button.get_popup().id_pressed.connect(_on_menu_pressed)
 	menu_button.about_to_popup.connect(_on_menu_about_to_popup)
 	add_child(menu_button)
@@ -53,7 +52,7 @@ func _on_menu_pressed(p_id: int) -> void:
 		MENU_DIRECTORY_SETUP:
 			directory_setup.directory_setup_popup()
 		MENU_PACK_TEXTURES:
-			packer.pack_textures_popup()			
+			packer.pack_textures_popup()
 		MENU_BAKE_ARRAY_MESH:
 			baker.bake_mesh_popup()
 		MENU_BAKE_OCCLUDER: