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/definitions/ActionDefinition.gd

@@ -8,6 +8,7 @@ extends Resource
 @export var target_type: StringName = SimulationIds.TARGET_ACTIVITY
 @export var resource_action_id: StringName
 
+
 func validate() -> Array[String]:
 	var errors: Array[String] = []
 	if action_id.is_empty():
@@ -16,15 +17,13 @@ func validate() -> Array[String]:
 		errors.append("display_name is empty for '%s'" % action_id)
 	if default_duration <= 0.0:
 		errors.append("default_duration must be positive for '%s'" % action_id)
-	if target_type not in [
-		SimulationIds.TARGET_RESOURCE,
-		SimulationIds.TARGET_ACTIVITY,
-		SimulationIds.TARGET_FREE
-	]:
-		errors.append("target_type '%s' is invalid for '%s'" % [target_type, action_id])
 	if (
-		target_type == SimulationIds.TARGET_RESOURCE
-		and resource_action_id.is_empty()
+		target_type
+		not in [
+			SimulationIds.TARGET_RESOURCE, SimulationIds.TARGET_ACTIVITY, SimulationIds.TARGET_FREE
+		]
 	):
+		errors.append("target_type '%s' is invalid for '%s'" % [target_type, action_id])
+	if target_type == SimulationIds.TARGET_RESOURCE and resource_action_id.is_empty():
 		errors.append("resource_action_id is required for '%s'" % action_id)
 	return errors