Centralize quick and grid UI bridges

src/legacy_quick_ui_services.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include "app_core/quick_ui.h"
+#include "foundation/result.h"
+#include "node_panel_quick.h"
+
+namespace pp::panopainter {
+
+[[nodiscard]] pp::foundation::Status execute_legacy_quick_ui_plan(
+    NodePanelQuick& panel,
+    const pp::app::QuickUiPlan& plan,
+    const NodePanelQuick::MiniState* restore_state = nullptr);
+
+} // namespace pp::panopainter