Prevent hidden CCS opening overlays

tests/ccs_player_test.gd

@@ -66,7 +66,15 @@ func _run() -> void:
 	_assert(player.time_dialog.visible, "CCS dialog lifecycle test should begin with an open popup")
 	player.on_hide()
 	_assert(not player.time_dialog.visible, "hiding the CCS screen should dismiss popup windows")
+	player.visible = false
+	ccs_service.attempt.openingCompleted = false
+	player._render()
+	await process_frame
+	_assert(not player.intro_dialog.visible, "a hidden classic player must not open dialogs over CCS Cases 2")
+	_assert(not player.opening_active, "a hidden classic player must not begin its opening sequence")
 
+	player.visible = true
+	ccs_service.attempt.openingCompleted = true
 	ccs_service.attempt.state = "final_orders"
 	player._render()
 	_assert(player.final_orders_notice.visible, "final-orders mode should show instructions")