Files
hyperframes/skills
Vance IngallsandClaude Fable 5 a2243f7586 feat(core,figma-skill): mechanical motion translation + objective fidelity gate
Two guarantees so figma-motion imports can't drift from the design again:

- motionContextToDocs(): raw get_motion_context response -> MotionDoc[],
  in code. Parses the motion.dev snippets (the reliable encoding; the CSS
  snippets stretch durations and can disagree), strips loop-wrap tail
  keyframes (sub-ms segments at the window end are the loop reset, not
  authored motion), preserves bezier eases verbatim. Fixture test uses the
  verbatim response from a real Motion timeline whose translation was
  frame-validated against Figma's own export_video render.

- skills/figma/scripts/verify-motion.mjs: mandatory post-render gate.
  Compares motion-energy deltas between the render and the export_video
  ground truth so static import fidelity cancels out and the score
  isolates choreography. Calibrated on a faithful translation (min 20.3dB)
  vs a diverging one (min 5.0dB); threshold 15dB.

The skill's Motion step now routes through both: no hand transcription,
no unverified completion.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-09 00:49:07 -07:00
..