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/tools/region_mover.gd

@@ -1,6 +1,6 @@
-# This script can be used to move your regions by an offset. 
+# This script can be used to move your regions by an offset.
 # Eventually this tool will find its way into a built in UI
-# 
+#
 # Attach it to your Terrain3D node
 # Save and reload your scene
 # Select your Terrain3D node
@@ -9,19 +9,18 @@
 # It should unload the regions, rename files, and reload them
 # Clear the script and resave your scene
 
-
 @tool
 extends Terrain3D
 
-
 @export var offset: Vector2i
-@export var run: bool = false : set = start_rename
+@export var run: bool = false:
+	set = start_rename
 
 
 func start_rename(val: bool = false) -> void:
 	if val == false or offset == Vector2i.ZERO:
 		return
-		
+
 	var dir_name: String = data_directory
 	data_directory = ""
 	var dir := DirAccess.open(dir_name)
@@ -36,17 +35,22 @@ func start_rename(val: bool = false) -> void:
 			var region_loc: Vector2i = Terrain3DUtil.filename_to_location(file_name)
 			var new_loc: Vector2i = region_loc + offset
 			if new_loc.x < -16 or new_loc.x > 15 or new_loc.y < -16 or new_loc.y > 15:
-				push_error("New location %.0v out of bounds for region %.0v. Aborting" % [ new_loc, region_loc ])
+				push_error(
+					(
+						"New location %.0v out of bounds for region %.0v. Aborting"
+						% [new_loc, region_loc]
+					)
+				)
 				return
 			var new_name: String = "tmp_" + Terrain3DUtil.location_to_filename(new_loc)
 			dir.rename(file_name, new_name)
 			affected_files.push_back(new_name)
-			print("File: %s renamed to: %s" % [ file_name, new_name ])
-				
+			print("File: %s renamed to: %s" % [file_name, new_name])
+
 	for file_name in affected_files:
 		var new_name: String = file_name.trim_prefix("tmp_")
 		dir.rename(file_name, new_name)
-		print("File: %s renamed to: %s" % [ file_name, new_name ])
-		
+		print("File: %s renamed to: %s" % [file_name, new_name])
+
 	data_directory = dir_name
-	EditorInterface.get_resource_filesystem().scan()	
+	EditorInterface.get_resource_filesystem().scan()