feat(render): halo neon proporcional al bounding_radius de la shape (opt-out a text)

source/core/rendering/shape_renderer.hpp

@@ -21,6 +21,11 @@ namespace Rendering {
     // - scale: factor de scale (1.0 = mida original)
     // - progress: progrés de l'animación (0.0-1.0, default 1.0 = tot visible)
     // - brightness: factor de brightness (0.0-1.0, default 1.0 = màxima brightness)
+    // - color: si alpha==0, usa oscil·lador global
+    // - thickness: gruix de línia. <=0 → usa global (g_current_line_thickness)
+    // - alpha: alpha que arriba al GPU (default 1.0 = opac). <1.0 = halo real
+    // - glow: si true, redibuixa la shape amb halos translúcids proporcionals
+    //         al bounding_radius*scale (efecte neon). Si false, single-pass.
     void renderShape(Rendering::Renderer* renderer,
         const std::shared_ptr<Graphics::Shape>& shape,
         const Vec2& position,
@@ -28,6 +33,9 @@ namespace Rendering {
         float scale = 1.0F,
         float progress = 1.0F,
         float brightness = 1.0F,
-        SDL_Color color = {0, 0, 0, 0});  // alpha==0 → usa global oscilador
+        SDL_Color color = {0, 0, 0, 0},
+        float thickness = 0.0F,
+        float alpha = 1.0F,
+        bool glow = true);
 
 }  // namespace Rendering