chore: release v0.4.12

chore: release v0.4.11

chore: release v0.4.11-alpha.1

chore: release v0.4.10

chore: release v0.4.9

chore: release v0.4.8

chore: release v0.4.7

fix: guard layoutWidth/Height with HTMLElement instanceof check

offsetWidth/offsetHeight are only defined on HTMLElement (not on
SVGElement, MathMLElement, etc.). Casting unconditionally can yield
undefined-by-runtime even though TypeScript thinks otherwise. Use an
instanceof check and fall back to the bounding rect dimensions when the
element is not an HTMLElement.

Addresses deferred review feedback from PR heygen-com#290.

fix(hdr): address review feedback across stack

- Document groupIntoLayers tie-break (V8 stable sort → DOM order).
- Expand layerCompositor docstring: merge rationale, visibility inclusion.
- Add tests: empty input, negative z-index, stable tie-break at equal z.
- Document getEffectiveZIndex CSS stacking-context limitations.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

fix(hdr): address deferred items from PR heygen-com#288 review

- blitRgb48leRegion: take canvasHeight as an explicit parameter so callers
  with non-square canvases or other byte-stride conventions cannot silently
  produce a wrong height. Updates all alphaBlit.test.ts call sites.
- renderOrchestrator: cache max frame index per pre-extracted HDR frame
  directory and bounds-check videoFrameIndex before existsSync. Avoids
  redundant filesystem syscalls when the requested time falls past the
  last extracted frame for a given clip.

Made-with: Cursor