Recovered orphaned WIP before switching to a new task

sandbox_probe/probe.gd

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+extends SceneTree
+
+func _init():
+	print("=== SANDBOX PROBE START ===")
+	probe_script_loading()
+	probe_os_apis()
+	probe_file_access()
+	probe_network()
+	probe_engine_apis()
+	print("=== SANDBOX PROBE END ===")
+	quit()
+
+func probe_script_loading():
+	print("--- Script loading ---")
+	# Can we load a GDScript from a string at runtime?
+	var gd = GDScript.new()
+	gd.source_code = "extends RefCounted\nfunc hello():\n\treturn 42\n"
+	var err = gd.reload()
+	print("GDScript.reload() from source_code err=", err)
+	if err == OK:
+		var inst = gd.new()
+		print("  instantiated, hello()=", inst.call("hello"))
+	# Can we load a script resource from a path?
+	var res = load("res://test_script.gd")
+	print("load('res://test_script.gd') = ", res)
+
+func probe_os_apis():
+	print("--- OS APIs ---")
+	# Can we execute shell commands?
+	var out = []
+	var exit_code = OS.execute("echo", ["hello"], out)
+	print("OS.execute('echo') exit=", exit_code, " out=", out)
+	# Environment access
+	print("OS.get_environment('HOME') = ", OS.get_environment("HOME"))
+	# Process spawning
+	print("OS.create_process available: ", OS.has_method("create_process"))
+
+func probe_file_access():
+	print("--- File access ---")
+	# Can we read arbitrary files?
+	var f = FileAccess.open("/etc/hostname", FileAccess.READ)
+	print("FileAccess.open('/etc/hostname') = ", f)
+	if f:
+		print("  content: ", f.get_as_text())
+		f.close()
+	# Can we write outside the project?
+	var w = FileAccess.open("/tmp/godot_probe_write.txt", FileAccess.WRITE)
+	print("FileAccess.open('/tmp/...', WRITE) = ", w)
+	if w:
+		w.store_string("probe")
+		w.close()
+		print("  wrote to /tmp OK")
+
+func probe_network():
+	print("--- Network ---")
+	# Can we open raw sockets?
+	var tcp = TCPServer.new()
+	var bind_err = tcp.listen(0)
+	print("TCPServer.listen(0) err=", bind_err)
+	# HTTP client
+	var http = HTTPClient.new()
+	print("HTTPClient instantiated: ", http != null)
+
+func probe_engine_apis():
+	print("--- Engine APIs ---")
+	# Can we access the scene tree / add nodes?
+	var node = Node.new()
+	print("Node.new() = ", node)
+	# Can we access ProjectSettings?
+	print("ProjectSettings.get_setting('application/config/name') = ", ProjectSettings.get_setting("application/config/name"))
+	# Can we access the OS shell / clipboard?
+	print("OS.get_clipboard() = ", OS.get_clipboard())
+	# Can we access the filesystem directory listing?
+	var dir = DirAccess.open("/")
+	print("DirAccess.open('/') = ", dir)
+	if dir:
+		var names = dir.get_files()
+		print("  root files count: ", names.size())

sandbox_probe/test_script.gd

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+extends RefCounted
+
+func hello():
+	return "from test_script.gd"