@remotion/studio: Add UV effect handles

[JonnyBurger]

Fixes #7786.

Summary

• Show draggable canvas handles for selected effect UV coordinate props.
• Position handles by interpolating the measured outline quad in semantic corner order.
• Save dragged UV values through the existing effect prop update pipeline.

Testing

• cd packages/studio && bun test src/test/timeline-selection.test.ts
• bunx turbo run make --filter='@remotion/studio'
• cd packages/studio && bun run lint --quiet
• bun run build && bun run stylecheck

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
bugs	Ready	Preview, Comment	May 31, 2026 5:20pm
remotion	Ready	Preview, Comment	May 31, 2026 5:20pm

[pullfrog]

✅ No new issues found.

Reviewed changes — Added draggable canvas handles for effect uv-coordinate props in the Studio's selected outline overlay, with bilinear interpolation for position mapping and Newton-Raphson iteration for inverse UV solving.

• SelectedOutlineOverlay.tsx — Added UvCoordinate types, getUvHandlePosition / getUvCoordinateForPoint math helpers, getSelectedEffectFieldsBySequenceKey selection tracking, getSelectedUvHandles handle generation, and SelectedUvHandleCircle drag interaction component. UV handles render alongside outline polygons for selected effects.
• timeline-selection.test.ts — Added round-trip tests verifying forward UV→point and inverse point→UV coordinate mapping.

  ^{｜ View workflow run ｜ Using Kimi K2 ｜ 𝕏}