Release version 0.5.2

[TheBeems]

Summary

• bump the application and Store package version to 0.5.2
• move the Store startup fix from Unreleased into the dated 0.5.2 changelog section
• advance the Unreleased comparison link to the 0.5.2 release baseline

Why

Version 0.5.2 is the first release containing the complete self-contained .NET MSIX layout from PR #11. The higher package version allows Partner Center and existing Store installations to recognize it as an update.

Impact

The release workflow will produce CodexUsageDock-0.5.2.msixupload, containing x64 and ARM64 packages with identity version 0.5.2.0.

Validation

• git diff --check
• PowerShell release-script syntax check
• full local x64 + ARM64 Store release build
• generated CodexUsageDock-0.5.2.msixupload passed package, runtime-layout, manifest, architecture, and bundle validation

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Update the stale metadata version test

This version bump changes the assembly informational version consumed by CodexUsageDockMetadata.Version, but CodexUsageDock.Tests/UsageDataTests.cs:166 still asserts 0.5.1; the Store package workflow runs dotnet test before packaging, so the 0.5.2 release validation fails until that expected value is updated.

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