Parlyn Engine v0.5.0 Beta 5 (unsigned)

Parlyn Engine v0.5.0 Beta 5

This unsigned Windows beta begins Phase 2 of the Parlyn editor. It adds
deep node duplication, safe hierarchy reparenting, recursive hierarchy
display and durable validated Scene History. Undo/Redo now survives
project close and a complete application restart when the saved history
matches the loaded Scene. Beta 4 project persistence, safe Recycle Bin
deletion and hardened desktop boundaries remain intact.

Important: This beta is unsigned and may be blocked by Windows
Smart App Control. It is published to document and validate the packaged
application while Parlyn applies for trusted Open Source code signing.
It must not be described as a trusted or signed release.

The repository contains the reproducible build workflow, public code
signing policy and SHA-256 verification procedure. Parlyn has applied
to the SignPath Foundation program; approval and certificate access
remain pending. This release is not SignPath-signed.

Maintainer acceptance instructions:
https://github.com/WebCrew/Parlyn-Engine/blob/main/docs/MAINTAINER-ACCEPTANCE-v0.5.0-beta.5.md