Carry Mechanics

v0.0.0-beta.45 — Arms raised to actually grip the carried block in third person

Fix

• Arms hung normally while carrying: the block was positioned correctly in front of the body (beta.44), but the player model's arms still hung at rest, so it looked like the block was floating rather than being held. Ported Carry On's arm-pose mixin: both arms are now rotated upward/inward around the carried block, scaled by the block's width and by whether the player is sneaking, giving the "hugging the object" look shown in Carry On's own screenshots.

Technical Changes

• HumanoidModelMixin (new) — injects at the RETURN of HumanoidModel#setupAnim and rotates rightArm/leftArm whenever the rendered humanoid is carrying a block (skipped while swimming/elytra-flying, since those poses already override arm placement).
• CarryRenderHelper — added getRenderWidth(...), mirroring the existing getRenderHeight(...), used to widen the arm spread for bigger blocks.