User pointed out the real gap: UE Details shows rotation in [0,360)
(-90 reads 270); our readback exposed [-180,180] with negative zeros.
GetRotation now wraps each axis to [0,360) via fmod -- strictly
equivalent math (each axis has 360-degree period), so matrix-rebuild
consumers like Camera::EulerRotMat are unaffected. The one consumer
needing a continuous domain is the free-look pitch clamp [-89,89] in
Camera::Update, which wraps back to [-180,180) before applying deltas.
atdunbg
4498bc7535