feat(editor): spacing, border i centrat vertical del tilepicker via editor.yaml

source/game/editor/editor_config.hpp

@@ -0,0 +1,39 @@
+#pragma once
+
+#ifdef _DEBUG
+
+#include <cstdint>
+#include <string>
+
+// Configuració visual de l'editor de tilemap (Debug-only). Carregada des
+// de data/editor/editor.yaml; les claus absents cauen als valors compilats
+// a Defaults::Editor. Mateix patró que UiConfig (Meyers singleton + load).
+class EditorConfig {
+   public:
+    static auto get() -> EditorConfig&;
+
+    EditorConfig(const EditorConfig&) = delete;
+    EditorConfig(EditorConfig&&) = delete;
+    auto operator=(const EditorConfig&) -> EditorConfig& = delete;
+    auto operator=(EditorConfig&&) -> EditorConfig& = delete;
+
+    void load(const std::string& file_path);
+
+    [[nodiscard]] auto pickerMargin() const -> int { return picker_margin_; }
+    [[nodiscard]] auto pickerSpacing() const -> int { return picker_spacing_; }
+    [[nodiscard]] auto borderArgb() const -> std::uint32_t { return border_argb_; }
+    [[nodiscard]] auto pickerBgArgb() const -> std::uint32_t { return picker_bg_argb_; }
+    [[nodiscard]] auto pickerHoverArgb() const -> std::uint32_t { return picker_hover_argb_; }
+
+   private:
+    EditorConfig();
+    ~EditorConfig() = default;
+
+    int picker_margin_;
+    int picker_spacing_;
+    std::uint32_t border_argb_;
+    std::uint32_t picker_bg_argb_;
+    std::uint32_t picker_hover_argb_;
+};
+
+#endif  // _DEBUG