docs: Add Component, GameObject, TransformComponent and Scene API documentation

- Add Component class documentation with lifecycle methods
- Add GameObject class documentation with component system
- Add TransformComponent documentation with transform methods
- Add Scene class documentation with GameObject management
- Add SceneManager singleton documentation with scene loading
- Update components.md overview with all component classes
- Update main.md navigation with Scene module

docs/api/components/transform-component/get-scale.md

@@ -0,0 +1,31 @@
+# GetScale
+
+Get the world scale of this transform.
+
+## Syntax
+
+```cpp
+Math::Vector3 GetScale() const;
+```
+
+## Returns
+
+Returns the world scale as a `Math::Vector3`.
+
+## Remarks
+
+Returns the world-space scale of this transform. If this transform has a parent, the world scale is computed by multiplying the local scale with the parent's world scale.
+
+## See Also
+
+- [GetLocalScale](get-local-scale)
+- [SetLocalScale](set-local-scale)
+
+## Examples
+
+```cpp
+void Example(TransformComponent* transform) {
+    Math::Vector3 worldScale = transform->GetScale();
+    XC_LOG_INFO("World scale: ({}, {}, {})", worldScale.x, worldScale.y, worldScale.z);
+}
+```