Refactor multi-resource UI and transfers

tests/test_crafter_feedback.gd

@@ -96,7 +96,10 @@ func _process(delta: float) -> bool:
 				print("TEST_CRAFTER_FEEDBACK: FAIL (fleet parked on the crafter never registered)")
 				quit(1)
 				return true
+			# A crafter now has both Craft and Transfer, so the shared action
+			# button unfolds those choices before the craft action is selected.
 			_tap(controller.action_button)
+			_tap(controller.building_action_button)
 			if not controller.craft_menu.visible:
 				print("TEST_CRAFTER_FEEDBACK: FAIL (the action button did not open the crafter panel)")
 				quit(1)