chore(release): prep 6.56.3 - a swap the session survives keeps its contract, and three silent exits speak

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WbciAqCSxpaiUpTumrCuA9

Author: superuser404notfound

CHANGELOG.md

@@ -10,6 +10,10 @@ the public-API contract.
 
 ## [Unreleased]
 
+_Nothing yet._
+
+## [6.56.3] - 2026-08-29
+
 ### Fixed
 
 - **An in-place item swap keeps the contract its session was loaded under (AE#440).** A swap replaces the

Examples/README.md

@@ -18,7 +18,7 @@ Three samples covering different audiences:
    ```
    https://github.com/superuser404notfound/AetherEngine
    ```
-   Dependency Rule: Up to Next Major Version, starting from `6.56.2`. Add the `AetherEngine` library product to your app target.
+   Dependency Rule: Up to Next Major Version, starting from `6.56.3`. Add the `AetherEngine` library product to your app target.
 
 3. **Drop the file in.** Replace the Xcode template's default `App.swift` (or whatever the generated `@main` file is called) with the contents of [`MinimalPlayerApp.swift`](MinimalPlayer/MinimalPlayerApp.swift). The file is self-contained: it defines both the `@main App` struct and the `ContentView`.
 

README.md

@@ -325,7 +325,7 @@ 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: "6.56.2")
+.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "6.56.3")
 ```
 
 Three samples ship in `Examples/`:
@@ -528,10 +528,10 @@ 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: "6.56.2")
+.package(url: "https://github.com/superuser404notfound/AetherEngine", from: "6.56.3")
 ```
 
-Pin to `.upToNextMinor(from: "6.56.2")` for stricter teams that prefer to opt into minor bumps explicitly.
+Pin to `.upToNextMinor(from: "6.56.3")` for stricter teams that prefer to opt into minor bumps explicitly.
 
 ## Requirements