Centralize legacy brush UI bridge

src/legacy_brush_ui_services.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include "app_core/brush_ui.h"
+#include "foundation/result.h"
+#include "glm/glm.hpp"
+
+#include <memory>
+#include <string>
+
+class App;
+class Brush;
+class NodePanelBrush;
+class NodePanelStroke;
+
+namespace pp::panopainter {
+
+[[nodiscard]] bool apply_legacy_brush_color_plan(
+    App& app,
+    glm::vec4 color,
+    bool update_quick,
+    bool update_color_panel);
+[[nodiscard]] bool apply_legacy_brush_texture_plan(
+    App& app,
+    pp::app::BrushUiTextureSlot slot,
+    const std::string& path,
+    const std::string& thumb);
+[[nodiscard]] bool apply_legacy_brush_preset_plan(
+    App& app,
+    const std::shared_ptr<Brush>& brush);
+[[nodiscard]] pp::foundation::Status execute_legacy_brush_stroke_changed_plan(App& app);
+[[nodiscard]] pp::foundation::Status execute_legacy_brush_texture_list_plan(
+    NodePanelBrush& panel,
+    const pp::app::BrushTextureListPlan& plan);
+[[nodiscard]] pp::foundation::Status execute_legacy_brush_stroke_control_plan(
+    NodePanelStroke& panel,
+    const pp::app::BrushStrokeControlPlan& plan);
+
+} // namespace pp::panopainter