# HyperFrames v0.7.77

Released on 2026-07-28.

Studio's timeline now exposes expandable property lanes, track headers, precise
keyframe retiming, and selection-safe editing across nested compositions. This
release also makes stalled CLI download cleanup reliable on Windows and adds an
opt-in prose-coverage floor to layout checks.

## Features

- **Studio:** Add expanded keyframe lanes, track headers, retiming interactions,
  and nested-composition timeline support
  ([#2791](https://github.com/heygen-com/hyperframes/pull/2791))
- **Check:** Add the opt-in `proseCoverageFloor` layout rule
  ([#2834](https://github.com/heygen-com/hyperframes/pull/2834))

## Fixes

- **CLI:** Wait for stalled download pipelines to release temporary files before
  cleanup, fixing the Windows locked-file failure
  ([#2835](https://github.com/heygen-com/hyperframes/pull/2835))
- **Telemetry:** Send CLI feedback through the plain-event path instead of the
  PostHog survey API
  ([#2831](https://github.com/heygen-com/hyperframes/pull/2831))

## Performance

- **CI:** Distribute the two heaviest render fixtures and improve Docker layer
  reuse for producer-only changes
  ([#2825](https://github.com/heygen-com/hyperframes/pull/2825),
  [#2822](https://github.com/heygen-com/hyperframes/pull/2822))

## Docs & Examples

- **Send-to guide:** Clarify that enhance turns are free and rendering is the
  paid step
  ([#2827](https://github.com/heygen-com/hyperframes/pull/2827))

## Internal

- **CLI:** Separate telemetry delivery from event policy while preserving the
  queued flush and process-exit behavior
  ([#2344](https://github.com/heygen-com/hyperframes/pull/2344))

## Full changelog

https://github.com/heygen-com/hyperframes/compare/v0.7.76...v0.7.77
