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).

simulation/persistence/SaveSlotController.gd

@@ -4,6 +4,7 @@ extends Node
 
 var store := SaveSlotStore.new()
 
+
 func _unhandled_key_input(event: InputEvent) -> void:
 	if not event.pressed or event.echo:
 		return

simulation/persistence/SaveSlotStore.gd

@@ -8,9 +8,11 @@ const MAX_SAVE_BYTES := 16 * 1024 * 1024
 var save_directory: String
 var last_error := ""
 
+
 func _init(directory: String = DEFAULT_DIRECTORY) -> void:
 	save_directory = directory
 
+
 func save(manager: Node, slot_name: String = DEFAULT_SLOT) -> bool:
 	last_error = ""
 	if manager == null or not manager.has_method("serialize_state"):
@@ -55,6 +57,7 @@ func save(manager: Node, slot_name: String = DEFAULT_SLOT) -> bool:
 	_remove_if_present(backup_path)
 	return true
 
+
 func load_into(manager: Node, slot_name: String = DEFAULT_SLOT) -> bool:
 	last_error = ""
 	if manager == null or not manager.has_method("restore_state"):
@@ -72,14 +75,13 @@ func load_into(manager: Node, slot_name: String = DEFAULT_SLOT) -> bool:
 		return _fail("Simulation refused the validated save record")
 	return true
 
+
 func has_slot(slot_name: String = DEFAULT_SLOT) -> bool:
 	if not _is_valid_slot_name(slot_name):
 		return false
 	var final_path := get_slot_path(slot_name)
-	return (
-		_read_record(final_path) != null
-		or _read_record(final_path + ".bak") != null
-	)
+	return _read_record(final_path) != null or _read_record(final_path + ".bak") != null
+
 
 func delete_slot(slot_name: String = DEFAULT_SLOT) -> bool:
 	if not _is_valid_slot_name(slot_name):
@@ -90,9 +92,11 @@ func delete_slot(slot_name: String = DEFAULT_SLOT) -> bool:
 	_remove_if_present(final_path + ".bak")
 	return true
 
+
 func get_slot_path(slot_name: String = DEFAULT_SLOT) -> String:
 	return save_directory.path_join(slot_name + ".json")
 
+
 func _read_record(path: String) -> SimulationStateRecord:
 	if not FileAccess.file_exists(path):
 		return null
@@ -106,6 +110,7 @@ func _read_record(path: String) -> SimulationStateRecord:
 	file.close()
 	return SimulationStateRecord.from_json(json_text)
 
+
 func _ensure_directory() -> bool:
 	var absolute_directory := ProjectSettings.globalize_path(save_directory)
 	var error := DirAccess.make_dir_recursive_absolute(absolute_directory)
@@ -113,6 +118,7 @@ func _ensure_directory() -> bool:
 		return _fail("Could not create the save directory")
 	return true
 
+
 func _is_valid_slot_name(slot_name: String) -> bool:
 	if slot_name.is_empty() or slot_name.length() > 32:
 		return false
@@ -122,10 +128,12 @@ func _is_valid_slot_name(slot_name: String) -> bool:
 			return false
 	return true
 
+
 func _remove_if_present(path: String) -> void:
 	if FileAccess.file_exists(path):
 		DirAccess.remove_absolute(path)
 
+
 func _fail(message: String) -> bool:
 	last_error = message
 	return false