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/SimulationClock.gd

@@ -5,9 +5,11 @@ var tick_interval: float
 var accumulator := 0.0
 var elapsed_ticks := 0
 
+
 func _init(interval: float = 1.0) -> void:
 	tick_interval = maxf(interval, 0.0001)
 
+
 func advance(delta: float) -> int:
 	accumulator += maxf(delta, 0.0)
 	var ticks_due := 0
@@ -17,6 +19,7 @@ func advance(delta: float) -> int:
 		ticks_due += 1
 	return ticks_due
 
+
 func reset() -> void:
 	accumulator = 0.0
 	elapsed_ticks = 0