🔄 Smooth Turn Animation

[NickTheDevOpsGuy]

Description

Interpolate movement between cells so the snake looks continuous instead of step-based.
Goal: time-based animation + math interpolation.
Test: movement feels fluid at higher speeds.

Proposed Solution

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Screenshots / Mockups (optional)

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Additional Context

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Checklist

• I searched existing issues for duplicates
• This issue includes enough detail to act on