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-# Visual Debugging System
-
-The `VisualDebug` class provides immediate-mode style 3D wireframe rendering for debugging purposes. It is stripped from the final binary when `STRIP_ALL` is defined.
-
-## Features
-
-- **Wireframe Primitives**: Boxes, AABBs, Spheres, Cones, Crosses, Lines.
-- **Trajectories**: Visualize paths with `add_trajectory`.
-- **Mesh Normals**: Visualize vertex normals.
-- **Zero Overhead**: Code is compiled out in release builds.
-
-## Usage
-
-Access the instance via `Renderer3D::GetVisualDebug()` (only available if `!STRIP_ALL`).
-
-```cpp
-#if !defined(STRIP_ALL)
-  VisualDebug& dbg = renderer.GetVisualDebug();
-  
-  // Draw a red box at origin
-  dbg.add_box(mat4::identity(), vec3(1,1,1), vec3(1,0,0));
-  
-  // Draw a trajectory
-  std::vector<vec3> path = { ... };
-  dbg.add_trajectory(path, vec3(0,1,0));
-  
-  // Draw a light cone
-  dbg.add_cone(light_pos, light_dir, range, radius, vec3(1,1,0));
-#endif
-```
-
-## Primitives
-
-- `add_line(start, end, color)`: Basic line segment.
-- `add_cross(center, size, color)`: 3D cross (useful for points).
-- `add_sphere(center, radius, color)`: Wireframe sphere (3 axis circles).
-- `add_cone(apex, dir, height, radius, color)`: Wireframe cone (useful for spotlights).
-- `add_box(transform, half_extent, color)`: OBB.
-- `add_aabb(min, max, color)`: Axis-aligned box.
-- `add_trajectory(points, color)`: Polyline.
-
-## Integration
-
-The `VisualDebug::render` method is called automatically by `Renderer3D::draw` if `s_debug_enabled_` is true.
-To enable globally:
-```cpp
-Renderer3D::SetDebugEnabled(true);
-```