chore: release v0.7.77

docs/changelog.mdx

@@ -8,6 +8,55 @@ Recent HyperFrames releases, including user-facing features, fixes, and migratio
 
 {/* New release entries are prepended by `bun run changelog:draft <version> --write`. */}
 
+<Update
+  label="HyperFrames v0.7.77"
+  description="Released - 2026-07-28"
+  tags={["Release", "Studio", "CLI", "Check"]}
+>
+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))
+
+[View the full commit range](https://github.com/heygen-com/hyperframes/compare/v0.7.76...v0.7.77).
+</Update>
+
 <Update
   label="HyperFrames v0.7.76"
   description="Released - 2026-07-27"