Review Motion Handoff

Audit an animation implementation on two axes: fidelity (does it match what was designed?) and quality (is it performant, accessible, and idiomatic?). Output a findings table, not a rewrite.

Inputs

Best case: Figma Motion Dev Mode JSON (ground truth for times, values, curves) plus the implementation code. If only a Figma frame link is available, call get_motion_context (recursive) to obtain the keyframe data. If neither exists, say so and limit the review to the quality axis.

Fidelity checks (against the JSON / motion context)

Normalize before comparing: round beziers to 3 decimals (Figma emits float noise: 0.2199999988 is 0.22), convert timeMs to offsets (timeMs / timelineDurationMs), compute relative deltas (end - start) from canvas absolutes.