chore(release): prep 4.5.7 - macOS video layer stays centered during live resize (#80)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: superuser404notfound

CHANGELOG.md

@@ -10,6 +10,14 @@ the public-API contract.
 
 ## [Unreleased]
 
+## [4.5.7] — 2026-06-27
+
+### Fixed
+
+- **On macOS the video image slid off-center during a live window resize, snapping back centered once the drag ended (#80).** The hosted video `CALayer` was added as a sublayer with no autoresizing mask, so its frame only caught up on the next `layout()` pass, a frame behind the continuously-changing view `bounds` during the drag. Because an `NSView`'s backing layer is anchored bottom-left, that one-pass lag read as the image drifting off-center while resizing. The layer now gets a flexible autoresizing mask (`[.layerWidthSizable, .layerHeightSizable]`) in the AppKit branch, so Core Animation stretches it in lockstep with the superlayer's bounds on every frame; initialized to full bounds, it starts and stays full-bounds (and centered) throughout. AppKit-only branch, so iOS/tvOS are untouched, and no effect on decode, timing, or audio. Reported by reckloon from a downstream consumer (Ocelot).
+
+([release notes](https://github.com/superuser404notfound/AetherEngine/releases/tag/4.5.7))
+
 ## [4.5.6] — 2026-06-27
 
 ### Fixed

README.md

@@ -152,7 +152,7 @@ Subtitle cues land in raw source PTS; render the overlay against `player.sourceT
 Install via Swift Package Manager:
 
 ```swift
-.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "4.5.6")
+.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "4.5.7")
 ```
 
 Two complementary samples ship in `Examples/`:
@@ -275,10 +275,10 @@ Browse all of this as a searchable site at **[aetherengine.superuser404.de](http
 AetherEngine uses [Semantic Versioning](https://semver.org). The public API surface — every `public` declaration in `Sources/AetherEngine/` — is the stability contract. **Major** removes / renames public symbols or breaks adopters; **Minor** adds public API or codec / format support; **Patch** fixes bugs with no public API change. `internal` types are not part of the contract.
 
 ```swift
-.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "4.5.6")
+.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "4.5.7")
 ```
 
-Pin to `.upToNextMinor(from: "4.5.6")` for stricter teams that prefer to opt into minor bumps explicitly.
+Pin to `.upToNextMinor(from: "4.5.7")` for stricter teams that prefer to opt into minor bumps explicitly.
 
 ## Requirements