Smooth Momentum Scrolling for 3D Box Rotation

📋 Summary

Add an optional smooth momentum effect specifically for scrolling or rotating 3D box models, so box rotation eases out naturally instead of stopping abruptly.

❗ Problem

When rotating 3D box models, the motion can feel too rigid:

• Rotation stops instantly when input stops

• Fast scrolling can feel jerky and less natural

• Flipping between front and back covers feels less satisfying than it could

This is most noticeable when users browse 3D boxes frequently in Big Box themes.

💡 Proposal

Introduce a “Smooth Rotation Momentum” option for 3D boxes:

• Rotation continues briefly after input, then gradually slows to a stop

• Applies only to 3D box rotation, not general list scrolling

• Works for mouse wheel, drag, and controller input where supported

• Optional strength setting (Low, Medium, High)

📦 Benefits

• Makes 3D box rotation feel smoother and more realistic

• Improves the feel of browsing 3D boxes in Big Box

• Reduces harsh starts and stops during rotation

• Adds polish without changing existing behavior by default

💡 Notes

• Should be optional, with current rotation behavior as default

• Momentum should not make front/back viewing less precise

• Consider respecting “Reduce Motion” style preferences