4491c6c7f3
Grows Vector2/3, Mathf, Color, Quaternion, GameObject, Transform, Camera, Material, ParticleSystem, Rect, Bounds, Time to the surface the engine references; adds Input/ Random/Resources statics + full KeyCode enum. Copies the verbatim extension files that collapse thousands of CS1061s at once (ContentKeywordExt, JsonData/LitJson extensions, EventExtension.Call, GameObjectExtension(s)). 26.5k -> 15.9k errors; residual now dominated by god-object member surface (GameMgr/UIManager/EffectMgr/Vfx*).