WIP checkpoint: Research and design GDScript sandboxing approach

sandbox_probe/probe.gd

@@ -1,6 +1,6 @@
-extends SceneTree
+extends Node
 
-func _init():
+func _ready():
 	print("=== SANDBOX PROBE START ===")
 	probe_script_loading()
 	probe_os_apis()
@@ -8,7 +8,7 @@ func _init():
 	probe_network()
 	probe_engine_apis()
 	print("=== SANDBOX PROBE END ===")
-	quit()
+	get_tree().quit()
 
 func probe_script_loading():
 	print("--- Script loading ---")